A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea

Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufg...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Lepper, Robert [verfasserIn] Fröhle, Peter [akademischer betreuerIn] Winter, Christian [akademischer betreuerIn] Kösters, Frank - 1976- [akademischer betreuerIn]
Körperschaften:	Technische Universität Hamburg [Grad-verleihende Institution] Technische Universität Hamburg, Institut für Wasserbau
Hochschulschrift:	Dissertation ; Technische Universität Hamburg ; 2023

Format:	E-Book
Sprache:	Englisch

Erschienen:	Hamburg: 2023
Zeitschrift/Reihe:	Hamburger Wasserbau-Schriften - 25

Rechteinformationen:	[DE-]Open Access [DE-]Namensnennung 4.0 International ; CC BY 4.0

Schlagwörter:	Watt
Schlagwörter:	North sea Wadden sea sea level rise siltation tidal flats tidal asymmetry sediment transport morphodynamics
Formangabe:	Hochschulschrift

Anmerkung:	Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau
Umfang:	1 Online-Ressource (vi, 104 Seiten, I - XXIV) ; Illustrationen, Diagramme, Karten

Weitere Ausgabe:	Erscheint auch als Druck-Ausgabe Lepper, Robert: A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea - Hamburg, 2023

Reihe:	Hamburger Wasserbau-Schriften ; 25

Links:	Link aufrufen Link aufrufen Link aufrufen Link aufrufen Link aufrufen

DOI / URN:	urn:nbn:de:101:1-2023122011063817432702 10.15480/882.8712

Katalog-ID:	1869966295

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520			\|a Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt.
520			\|a The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site.
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topic_title	620 551.45 DE-101 550 DE-101 56.30 bkl 23 00 DE-830 00 e-diss A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627)
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title_full	A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters
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title_sort	contribution to understanding the recently enhanced coastal siltation in the german wadden sea
title_auth	A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea
abstract	Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau
abstractGer	Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau
abstract_unstemmed	Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau
url	https://doi.org/10.15480/882.8712 https://hdl.handle.net/11420/43675 https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 https://d-nb.info/1314157752/34
author2	Fröhle, Peter Winter, Christian Kösters, Frank 1976- Technische Universität Hamburg Technische Universität Hamburg Institut für Wasserbau
author2Str	Fröhle, Peter Winter, Christian Kösters, Frank 1976- Technische Universität Hamburg Technische Universität Hamburg Institut für Wasserbau
ppnlink	1878867334 734873417
series	Hamburger Wasserbau-Schriften 25
spellingShingle	Hamburger Wasserbau-Schriften 25 Lepper, Robert ddc 620 ddc 551.45 ddc 550 bkl 56.30 DSpace North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics gnd Watt 23 e-diss A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea
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Frank Kösters Hamburg 2023 1 Online-Ressource (vi, 104 Seiten, I - XXIV) Illustrationen, Diagramme, Karten Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hamburger Wasserbau-Schriften 25 Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau Dissertation Technische Universität Hamburg 2023 DE-830 [DE-]Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2 Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. DE-830 [DE-]Namensnennung 4.0 International CC BY 4.0 cc https://creativecommons.org/licenses/by/4.0/ North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627) Fröhle, Peter akademischer betreuerin (DE-588)1140854437 (DE-627)898730228 (DE-576)494092920 dgs Winter, Christian akademischer betreuerin dgs Kösters, Frank 1976- akademischer betreuerin (DE-588)12963073X (DE-627)475215397 (DE-576)297757822 dgs Technische Universität Hamburg Grad-verleihende Institution (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 dgg Technische Universität Hamburg Institut für Wasserbau (DE-588)1124597476 (DE-627)878822585 (DE-576)483039209 oth Erscheint auch als Druck-Ausgabe Lepper, Robert A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea Hamburg, 2023 vi, 104, XXIV Seiten (DE-627)1878867334 Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns https://doi.org/10.15480/882.8712 Resolving-System kostenfrei https://hdl.handle.net/11420/43675 Resolving-System kostenfrei https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 Resolving-System kostenfrei https://d-nb.info/1314157752/34 Langzeitarchivierung Nationalbibliothek kostenfrei GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_120 ISIL_DE-715 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_213 ISIL_DE-551 GBV_ILN_235 ISIL_DE-616 GBV_ILN_235_S25 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER DSpace 56.30 Wasserbau SEPA (DE-627)106422006 BO 045F 620 20 01 0084 4450708970 x 08-01-24 21 01 0046 4450728882 z 08-01-24 22 01 0018 4450748867 SUBolrd xu 08-01-24 23 01 0830 440479049X tuhh Elektronischer Volltext; Pflichtex. f z 10-11-23 30 01 0104 4450778995 z 08-01-24 40 01 0007 4450788028 xsn 08-01-24 60 01 0705 4450806166 OLRD z 08-01-24 63 01 3401 4450824644 ORD x 08-01-24 70 01 0089 4450833074 zdo 08-01-24 105 01 0841 4450937031 z 08-01-24 110 01 3110 4450843894 x 08-01-24 120 01 0715 4560873070 00 --%%-- --%%-- g --%%-- alma z 31-07-24 132 01 0959 4450855531 OLR-DISS x 08-01-24 151 01 0546 4450873750 OLR-ODISS z 08-01-24 161 01 0960 445087966X ORD z 08-01-24 213 01 0551 4450897560 ORD x 08-01-24 235 01 3235/025 4540029452 00 NLÖ Online g --%%-- zS25 19-06-24 293 01 3293 4450922212 ORD z 08-01-24 370 01 4370 4450936094 x 08-01-24 2403 01 DE-LFER 4425409574 00 --%%-- --%%-- n --%%-- l01 05-12-23 20 01 0084 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 21 01 0046 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 22 01 0018 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 23 01 0830 https://doi.org/10.15480/882.8712 LF 30 01 0104 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 40 01 0007 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 60 01 0705 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 63 01 3401 E-Book https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 LF 70 01 0089 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 105 01 0841 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 110 01 3110 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 120 01 0715 http://49gbv-uob-primo.hosted.exlibrisgroup.com/openurl/49GBV_UOB/UOB_services_page?u.ignore_date_coverage=true&rft.mms_id=991016471298103501 132 01 0959 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 151 01 0546 Volltext https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 161 01 0960 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 213 01 0551 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 293 01 3293 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 370 01 4370 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 2403 01 DE-LFER https://doi.org/10.15480/882.8712 2403 01 DE-LFER https://hdl.handle.net/11420/43675 23 00 DE-830 00 e-diss 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 tuhh 23 01 0830 tubdok 60 01 0705 OLRD 63 01 3401 ORD 120 01 0715 alma 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 213 01 0551 ORD 293 01 3293 ORD
spelling	urn:nbn:de:101:1-2023122011063817432702 urn 10.15480/882.8712 doi 11420/43675 hdl (DE-627)1869966295 (DE-599)KXP1869966295 DE-627 ger DE-627 rda eng XA-DE-HH 620 551.45 DE-101 550 DE-101 56.30 bkl Lepper, Robert verfasserin (DE-588)1308967993 (DE-627)1869527216 aut A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters Hamburg 2023 1 Online-Ressource (vi, 104 Seiten, I - XXIV) Illustrationen, Diagramme, Karten Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hamburger Wasserbau-Schriften 25 Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau Dissertation Technische Universität Hamburg 2023 DE-830 [DE-]Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2 Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. DE-830 [DE-]Namensnennung 4.0 International CC BY 4.0 cc https://creativecommons.org/licenses/by/4.0/ North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627) Fröhle, Peter akademischer betreuerin (DE-588)1140854437 (DE-627)898730228 (DE-576)494092920 dgs Winter, Christian akademischer betreuerin dgs Kösters, Frank 1976- akademischer betreuerin (DE-588)12963073X (DE-627)475215397 (DE-576)297757822 dgs Technische Universität Hamburg Grad-verleihende Institution (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 dgg Technische Universität Hamburg Institut für Wasserbau (DE-588)1124597476 (DE-627)878822585 (DE-576)483039209 oth Erscheint auch als Druck-Ausgabe Lepper, Robert A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea Hamburg, 2023 vi, 104, XXIV Seiten (DE-627)1878867334 Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns https://doi.org/10.15480/882.8712 Resolving-System kostenfrei https://hdl.handle.net/11420/43675 Resolving-System kostenfrei https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 Resolving-System kostenfrei https://d-nb.info/1314157752/34 Langzeitarchivierung Nationalbibliothek kostenfrei GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_120 ISIL_DE-715 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_213 ISIL_DE-551 GBV_ILN_235 ISIL_DE-616 GBV_ILN_235_S25 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER DSpace 56.30 Wasserbau SEPA (DE-627)106422006 BO 045F 620 20 01 0084 4450708970 x 08-01-24 21 01 0046 4450728882 z 08-01-24 22 01 0018 4450748867 SUBolrd xu 08-01-24 23 01 0830 440479049X tuhh Elektronischer Volltext; Pflichtex. f z 10-11-23 30 01 0104 4450778995 z 08-01-24 40 01 0007 4450788028 xsn 08-01-24 60 01 0705 4450806166 OLRD z 08-01-24 63 01 3401 4450824644 ORD x 08-01-24 70 01 0089 4450833074 zdo 08-01-24 105 01 0841 4450937031 z 08-01-24 110 01 3110 4450843894 x 08-01-24 120 01 0715 4560873070 00 --%%-- --%%-- g --%%-- alma z 31-07-24 132 01 0959 4450855531 OLR-DISS x 08-01-24 151 01 0546 4450873750 OLR-ODISS z 08-01-24 161 01 0960 445087966X ORD z 08-01-24 213 01 0551 4450897560 ORD x 08-01-24 235 01 3235/025 4540029452 00 NLÖ Online g --%%-- zS25 19-06-24 293 01 3293 4450922212 ORD z 08-01-24 370 01 4370 4450936094 x 08-01-24 2403 01 DE-LFER 4425409574 00 --%%-- --%%-- n --%%-- l01 05-12-23 20 01 0084 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 21 01 0046 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 22 01 0018 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 23 01 0830 https://doi.org/10.15480/882.8712 LF 30 01 0104 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 40 01 0007 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 60 01 0705 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 63 01 3401 E-Book https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 LF 70 01 0089 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 105 01 0841 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 110 01 3110 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 120 01 0715 http://49gbv-uob-primo.hosted.exlibrisgroup.com/openurl/49GBV_UOB/UOB_services_page?u.ignore_date_coverage=true&rft.mms_id=991016471298103501 132 01 0959 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 151 01 0546 Volltext https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 161 01 0960 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 213 01 0551 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 293 01 3293 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 370 01 4370 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 2403 01 DE-LFER https://doi.org/10.15480/882.8712 2403 01 DE-LFER https://hdl.handle.net/11420/43675 23 00 DE-830 00 e-diss 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 tuhh 23 01 0830 tubdok 60 01 0705 OLRD 63 01 3401 ORD 120 01 0715 alma 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 213 01 0551 ORD 293 01 3293 ORD
allfields_unstemmed	urn:nbn:de:101:1-2023122011063817432702 urn 10.15480/882.8712 doi 11420/43675 hdl (DE-627)1869966295 (DE-599)KXP1869966295 DE-627 ger DE-627 rda eng XA-DE-HH 620 551.45 DE-101 550 DE-101 56.30 bkl Lepper, Robert verfasserin (DE-588)1308967993 (DE-627)1869527216 aut A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters Hamburg 2023 1 Online-Ressource (vi, 104 Seiten, I - XXIV) Illustrationen, Diagramme, Karten Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hamburger Wasserbau-Schriften 25 Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau Dissertation Technische Universität Hamburg 2023 DE-830 [DE-]Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2 Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. DE-830 [DE-]Namensnennung 4.0 International CC BY 4.0 cc https://creativecommons.org/licenses/by/4.0/ North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627) Fröhle, Peter akademischer betreuerin (DE-588)1140854437 (DE-627)898730228 (DE-576)494092920 dgs Winter, Christian akademischer betreuerin dgs Kösters, Frank 1976- akademischer betreuerin (DE-588)12963073X (DE-627)475215397 (DE-576)297757822 dgs Technische Universität Hamburg Grad-verleihende Institution (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 dgg Technische Universität Hamburg Institut für Wasserbau (DE-588)1124597476 (DE-627)878822585 (DE-576)483039209 oth Erscheint auch als Druck-Ausgabe Lepper, Robert A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea Hamburg, 2023 vi, 104, XXIV Seiten (DE-627)1878867334 Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns https://doi.org/10.15480/882.8712 Resolving-System kostenfrei https://hdl.handle.net/11420/43675 Resolving-System kostenfrei https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 Resolving-System kostenfrei https://d-nb.info/1314157752/34 Langzeitarchivierung Nationalbibliothek kostenfrei GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_120 ISIL_DE-715 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_213 ISIL_DE-551 GBV_ILN_235 ISIL_DE-616 GBV_ILN_235_S25 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER DSpace 56.30 Wasserbau SEPA (DE-627)106422006 BO 045F 620 20 01 0084 4450708970 x 08-01-24 21 01 0046 4450728882 z 08-01-24 22 01 0018 4450748867 SUBolrd xu 08-01-24 23 01 0830 440479049X tuhh Elektronischer Volltext; Pflichtex. f z 10-11-23 30 01 0104 4450778995 z 08-01-24 40 01 0007 4450788028 xsn 08-01-24 60 01 0705 4450806166 OLRD z 08-01-24 63 01 3401 4450824644 ORD x 08-01-24 70 01 0089 4450833074 zdo 08-01-24 105 01 0841 4450937031 z 08-01-24 110 01 3110 4450843894 x 08-01-24 120 01 0715 4560873070 00 --%%-- --%%-- g --%%-- alma z 31-07-24 132 01 0959 4450855531 OLR-DISS x 08-01-24 151 01 0546 4450873750 OLR-ODISS z 08-01-24 161 01 0960 445087966X ORD z 08-01-24 213 01 0551 4450897560 ORD x 08-01-24 235 01 3235/025 4540029452 00 NLÖ Online g --%%-- zS25 19-06-24 293 01 3293 4450922212 ORD z 08-01-24 370 01 4370 4450936094 x 08-01-24 2403 01 DE-LFER 4425409574 00 --%%-- --%%-- n --%%-- l01 05-12-23 20 01 0084 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 21 01 0046 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 22 01 0018 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 23 01 0830 https://doi.org/10.15480/882.8712 LF 30 01 0104 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 40 01 0007 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 60 01 0705 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 63 01 3401 E-Book https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 LF 70 01 0089 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 105 01 0841 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 110 01 3110 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 120 01 0715 http://49gbv-uob-primo.hosted.exlibrisgroup.com/openurl/49GBV_UOB/UOB_services_page?u.ignore_date_coverage=true&rft.mms_id=991016471298103501 132 01 0959 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 151 01 0546 Volltext https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 161 01 0960 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 213 01 0551 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 293 01 3293 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 370 01 4370 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 2403 01 DE-LFER https://doi.org/10.15480/882.8712 2403 01 DE-LFER https://hdl.handle.net/11420/43675 23 00 DE-830 00 e-diss 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 tuhh 23 01 0830 tubdok 60 01 0705 OLRD 63 01 3401 ORD 120 01 0715 alma 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 213 01 0551 ORD 293 01 3293 ORD
allfieldsGer	urn:nbn:de:101:1-2023122011063817432702 urn 10.15480/882.8712 doi 11420/43675 hdl (DE-627)1869966295 (DE-599)KXP1869966295 DE-627 ger DE-627 rda eng XA-DE-HH 620 551.45 DE-101 550 DE-101 56.30 bkl Lepper, Robert verfasserin (DE-588)1308967993 (DE-627)1869527216 aut A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters Hamburg 2023 1 Online-Ressource (vi, 104 Seiten, I - XXIV) Illustrationen, Diagramme, Karten Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hamburger Wasserbau-Schriften 25 Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau Dissertation Technische Universität Hamburg 2023 DE-830 [DE-]Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2 Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. DE-830 [DE-]Namensnennung 4.0 International CC BY 4.0 cc https://creativecommons.org/licenses/by/4.0/ North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627) Fröhle, Peter akademischer betreuerin (DE-588)1140854437 (DE-627)898730228 (DE-576)494092920 dgs Winter, Christian akademischer betreuerin dgs Kösters, Frank 1976- akademischer betreuerin (DE-588)12963073X (DE-627)475215397 (DE-576)297757822 dgs Technische Universität Hamburg Grad-verleihende Institution (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 dgg Technische Universität Hamburg Institut für Wasserbau (DE-588)1124597476 (DE-627)878822585 (DE-576)483039209 oth Erscheint auch als Druck-Ausgabe Lepper, Robert A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea Hamburg, 2023 vi, 104, XXIV Seiten (DE-627)1878867334 Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns https://doi.org/10.15480/882.8712 Resolving-System kostenfrei https://hdl.handle.net/11420/43675 Resolving-System kostenfrei https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 Resolving-System kostenfrei https://d-nb.info/1314157752/34 Langzeitarchivierung Nationalbibliothek kostenfrei GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_120 ISIL_DE-715 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_213 ISIL_DE-551 GBV_ILN_235 ISIL_DE-616 GBV_ILN_235_S25 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER DSpace 56.30 Wasserbau SEPA (DE-627)106422006 BO 045F 620 20 01 0084 4450708970 x 08-01-24 21 01 0046 4450728882 z 08-01-24 22 01 0018 4450748867 SUBolrd xu 08-01-24 23 01 0830 440479049X tuhh Elektronischer Volltext; Pflichtex. f z 10-11-23 30 01 0104 4450778995 z 08-01-24 40 01 0007 4450788028 xsn 08-01-24 60 01 0705 4450806166 OLRD z 08-01-24 63 01 3401 4450824644 ORD x 08-01-24 70 01 0089 4450833074 zdo 08-01-24 105 01 0841 4450937031 z 08-01-24 110 01 3110 4450843894 x 08-01-24 120 01 0715 4560873070 00 --%%-- --%%-- g --%%-- alma z 31-07-24 132 01 0959 4450855531 OLR-DISS x 08-01-24 151 01 0546 4450873750 OLR-ODISS z 08-01-24 161 01 0960 445087966X ORD z 08-01-24 213 01 0551 4450897560 ORD x 08-01-24 235 01 3235/025 4540029452 00 NLÖ Online g --%%-- zS25 19-06-24 293 01 3293 4450922212 ORD z 08-01-24 370 01 4370 4450936094 x 08-01-24 2403 01 DE-LFER 4425409574 00 --%%-- --%%-- n --%%-- l01 05-12-23 20 01 0084 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 21 01 0046 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 22 01 0018 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 23 01 0830 https://doi.org/10.15480/882.8712 LF 30 01 0104 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 40 01 0007 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 60 01 0705 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 63 01 3401 E-Book https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 LF 70 01 0089 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 105 01 0841 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 110 01 3110 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 120 01 0715 http://49gbv-uob-primo.hosted.exlibrisgroup.com/openurl/49GBV_UOB/UOB_services_page?u.ignore_date_coverage=true&rft.mms_id=991016471298103501 132 01 0959 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 151 01 0546 Volltext https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 161 01 0960 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 213 01 0551 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 293 01 3293 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 370 01 4370 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 2403 01 DE-LFER https://doi.org/10.15480/882.8712 2403 01 DE-LFER https://hdl.handle.net/11420/43675 23 00 DE-830 00 e-diss 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 tuhh 23 01 0830 tubdok 60 01 0705 OLRD 63 01 3401 ORD 120 01 0715 alma 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 213 01 0551 ORD 293 01 3293 ORD
allfieldsSound	urn:nbn:de:101:1-2023122011063817432702 urn 10.15480/882.8712 doi 11420/43675 hdl (DE-627)1869966295 (DE-599)KXP1869966295 DE-627 ger DE-627 rda eng XA-DE-HH 620 551.45 DE-101 550 DE-101 56.30 bkl Lepper, Robert verfasserin (DE-588)1308967993 (DE-627)1869527216 aut A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea von Robert Lepper ; Gutachter: Prof. Dr.-Ing. Peter Fröhle, Prof. Dr. rer. nat. Christian Winter, Dr. rer. nat. Frank Kösters Hamburg 2023 1 Online-Ressource (vi, 104 Seiten, I - XXIV) Illustrationen, Diagramme, Karten Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Hamburger Wasserbau-Schriften 25 Sonstige Körperschaft: Technische Universität Hamburg, Institut für Wasserbau Dissertation Technische Universität Hamburg 2023 DE-830 [DE-]Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2 Die Einwirkung des Menschen auf das weltweit einzigartige Küstensystem „Wattenmeer“ hat in den letzten Jahrhunderten die Küstenlinie und Morphologie dieses Systems dauerhaft verändert. Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. Eine Verringerung des Tiderinnenvolumens und höher liegendes, breiteres Watt verringerte voraussichtlich die Energie von Wellen und Tide, was Verschlickung begünstigt. The Wadden Sea on the Northwestern European Shelf is world's largest channel-shoal system that comprises broad coherent intertidal flats, islands, shoals, and several estuaries. Coastal management has shaped the Wadden Sea's coastline and its estuaries for centuries which is why navigational channel dredging and coastline maintenance have become routine coastal engineering tasks. Since the 2010s, German coastal stakeholders reported further enhanced coastal siltation. My research objectives were (1) to identify whether there was quantifiable evidence of enhanced coastal siltation and (2) to find the driving processes behind this development. An analysis of bathymetry data confirmed that intertidal flats accreted and that lateral expansion and subtidal deepening occurred. Balanced subtidal and intertidal sediment budgets suggested a redistribution of local subtidal sediments to intertidal flats. In addition, surface sediment data indicated a gradually increasing mudflat coverage over time. Based on this information, numerical modeling and observational data were used to quantify changes in tidal and non-tidal forcing: I found near-constant wind-wave and storm surge conditions which indicated that event-driven phenomena were an unlikely driver. Spatial tidal analysis and observational data revealed amplitude and phase shifts of principle and shallow water tidal constituents which reflected in increased tidal amplitude, and reduced flood dominance. Furthermore, diminishing flood flow velocity and increased slack duration were noted. These phenomena were related to increased relative intertidal storage and to subtidal deepening from bathymetry evolution. Hence, the reduction in channel volume and the intertidal accretion likely decreased tidal and wave energy on the tidal flats and enabled the deposition of more fines. Longer flood and ebb slack duration should add to this effect. The import of sand into the coastal zone was likely reduced as flood dominance diminished at the entire study site. DE-830 [DE-]Namensnennung 4.0 International CC BY 4.0 cc https://creativecommons.org/licenses/by/4.0/ North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics DSpace Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content s (DE-588)4064847-3 (DE-627)106121952 (DE-576)209155388 Watt gnd (DE-627) Fröhle, Peter akademischer betreuerin (DE-588)1140854437 (DE-627)898730228 (DE-576)494092920 dgs Winter, Christian akademischer betreuerin dgs Kösters, Frank 1976- akademischer betreuerin (DE-588)12963073X (DE-627)475215397 (DE-576)297757822 dgs Technische Universität Hamburg Grad-verleihende Institution (DE-588)1112763473 (DE-627)866918418 (DE-576)476770564 dgg Technische Universität Hamburg Institut für Wasserbau (DE-588)1124597476 (DE-627)878822585 (DE-576)483039209 oth Erscheint auch als Druck-Ausgabe Lepper, Robert A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea Hamburg, 2023 vi, 104, XXIV Seiten (DE-627)1878867334 Hamburger Wasserbau-Schriften 25 25 (DE-627)734873417 (DE-576)378185128 (DE-600)2699954-7 1612-8699 ns https://doi.org/10.15480/882.8712 Resolving-System kostenfrei https://hdl.handle.net/11420/43675 Resolving-System kostenfrei https://nbn-resolving.org/urn:nbn:de:101:1-2023122011063817432702 Resolving-System kostenfrei https://d-nb.info/1314157752/34 Langzeitarchivierung Nationalbibliothek kostenfrei GBV-ODiss GBV_ILN_20 ISIL_DE-84 SYSFLAG_1 GBV_KXP GBV_ILN_21 ISIL_DE-46 GBV_ILN_22 ISIL_DE-18 GBV_ILN_23 ISIL_DE-830 GBV_ILN_30 ISIL_DE-104 GBV_ILN_40 ISIL_DE-7 GBV_ILN_60 ISIL_DE-705 GBV_ILN_63 ISIL_DE-Wim2 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_120 ISIL_DE-715 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_213 ISIL_DE-551 GBV_ILN_235 ISIL_DE-616 GBV_ILN_235_S25 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER DSpace 56.30 Wasserbau SEPA (DE-627)106422006 BO 045F 620 20 01 0084 4450708970 x 08-01-24 21 01 0046 4450728882 z 08-01-24 22 01 0018 4450748867 SUBolrd xu 08-01-24 23 01 0830 440479049X tuhh Elektronischer Volltext; Pflichtex. f z 10-11-23 30 01 0104 4450778995 z 08-01-24 40 01 0007 4450788028 xsn 08-01-24 60 01 0705 4450806166 OLRD z 08-01-24 63 01 3401 4450824644 ORD x 08-01-24 70 01 0089 4450833074 zdo 08-01-24 105 01 0841 4450937031 z 08-01-24 110 01 3110 4450843894 x 08-01-24 120 01 0715 4560873070 00 --%%-- --%%-- g --%%-- alma z 31-07-24 132 01 0959 4450855531 OLR-DISS x 08-01-24 151 01 0546 4450873750 OLR-ODISS z 08-01-24 161 01 0960 445087966X ORD z 08-01-24 213 01 0551 4450897560 ORD x 08-01-24 235 01 3235/025 4540029452 00 NLÖ Online g --%%-- zS25 19-06-24 293 01 3293 4450922212 ORD z 08-01-24 370 01 4370 4450936094 x 08-01-24 2403 01 DE-LFER 4425409574 00 --%%-- --%%-- n --%%-- l01 05-12-23 20 01 0084 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 21 01 0046 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 22 01 0018 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 23 01 0830 https://doi.org/10.15480/882.8712 LF 30 01 0104 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 40 01 0007 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 60 01 0705 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 63 01 3401 E-Book https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 LF 70 01 0089 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 105 01 0841 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 110 01 3110 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 120 01 0715 http://49gbv-uob-primo.hosted.exlibrisgroup.com/openurl/49GBV_UOB/UOB_services_page?u.ignore_date_coverage=true&rft.mms_id=991016471298103501 132 01 0959 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 151 01 0546 Volltext https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 161 01 0960 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 213 01 0551 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 293 01 3293 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 370 01 4370 https://nbn-resolving.de/urn:nbn:de:101:1-2023122011063817432702 2403 01 DE-LFER https://doi.org/10.15480/882.8712 2403 01 DE-LFER https://hdl.handle.net/11420/43675 23 00 DE-830 00 e-diss 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 22 01 0018 SUBolrd 23 01 0830 tuhh 23 01 0830 tubdok 60 01 0705 OLRD 63 01 3401 ORD 120 01 0715 alma 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 213 01 0551 ORD 293 01 3293 ORD
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authorswithroles_txt_mv	Lepper, Robert @@aut@@ Fröhle, Peter @@dgs@@ Winter, Christian @@dgs@@ Kösters, Frank @@dgs@@
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topic	ddc 620 ddc 551.45 ddc 550 bkl 56.30 DSpace North sea DSpace Wadden sea DSpace sea level rise DSpace siltation DSpace tidal flats DSpace tidal asymmetry DSpace sediment transport DSpace morphodynamics gnd Watt 23 e-diss
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title	A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea
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title_short	A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea
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GND_str_mv	Hagen, Robert Lepper, Robert Hochschulschrift Intertidalbereich Wattenmeer Watt Froehle, Peter Fröhle, P. Fröhle, Peter Kösters, Frank University of Technology (Hamburg) TU Hamburg Technical University (Hamburg) Université de Technologie de Hambourg Hamburg University of Technology Technische Universität Hamburg Technische Universität Hamburg. Institut B-10 Technische Universität Hamburg. Institute of River and Coastal Engineering Institut für Wasserbau (Hamburg) Institute of River and Coastal Engineering (Hamburg) Technische Universität Hamburg. Studiendekanat Bauwesen. Institut für Wasserbau Technische Universität Hamburg. Institut für Wasserbau
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GND_txtF_mv	Hagen, Robert Lepper, Robert Hochschulschrift Intertidalbereich Wattenmeer Watt Froehle, Peter Fröhle, P. Fröhle, Peter Kösters, Frank University of Technology (Hamburg) TU Hamburg Technical University (Hamburg) Université de Technologie de Hambourg Hamburg University of Technology Technische Universität Hamburg Technische Universität Hamburg. Institut B-10 Technische Universität Hamburg. Institute of River and Coastal Engineering Institut für Wasserbau (Hamburg) Institute of River and Coastal Engineering (Hamburg) Technische Universität Hamburg. Studiendekanat Bauwesen. Institut für Wasserbau Technische Universität Hamburg. Institut für Wasserbau
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Stakeholder und Hafenbetreiber im Küstenbereich beklagen seit Jahrzehnten stetig zunehmende Verschlickung. Die Aufgabe dieser Dissertation war es (1) Nachweise für zunehmende Verschlickung im Zeitraum von 1996 bis 2016 zu finden und (2) mögliche Wirkungsketten zu untersuchen. Eine Topographie-Analyse bestätigte dies zunächst durch die Zunahme der mittleren Watthöhe und des Sedimentvolumens im Wattbereich. Diese morphologischen Veränderungen hatten Auswirkungen auf die Eigenschaften der Tide, insbesondere durch abnehmende Strömungsgeschwindigkeiten, längere Stauwasserdauer und abnehmende Flutdominanz. 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A contribution to understanding the recently enhanced coastal siltation in the German Wadden Sea

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