Spatial heterogeneity in estuarine mud dynamics

Abstract The fate of mud in an estuary over an entire year was unravelled using complementary, independent, spatially explicit techniques. Sequential ERS-2 SAR and Envisat MERIS-FR data were used to derive synoptic changes in intertidal bottom mud and suspended particulate matter (SPM) in the top of...
Ausführliche Beschreibung

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Autor*in:	van der Wal, Daphne [verfasserIn] van Kessel, Thijs Eleveld, Marieke A. Vanlede, Joris

Format:	Artikel
Sprache:	Englisch

Erschienen:	2010

Schlagwörter:	Satellite remote sensing Cohesive sediment transport model Suspended sediment Intertidal bed sediment Bed roughness Water-bed exchange Westerschelde

Anmerkung:	© The Author(s) 2010

Übergeordnetes Werk:	Enthalten in: Ocean dynamics - Springer-Verlag, 2001, 60(2010), 3 vom: 05. März, Seite 519-533
Übergeordnetes Werk:	volume:60 ; year:2010 ; number:3 ; day:05 ; month:03 ; pages:519-533

Links:	Volltext

DOI / URN:	10.1007/s10236-010-0271-9

Katalog-ID:	OLC207085843X

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language	English
source	Enthalten in Ocean dynamics 60(2010), 3 vom: 05. März, Seite 519-533 volume:60 year:2010 number:3 day:05 month:03 pages:519-533
sourceStr	Enthalten in Ocean dynamics 60(2010), 3 vom: 05. März, Seite 519-533 volume:60 year:2010 number:3 day:05 month:03 pages:519-533
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Satellite remote sensing Cohesive sediment transport model Suspended sediment Intertidal bed sediment Bed roughness Water-bed exchange Westerschelde
dewey-raw	550
isfreeaccess_bool	false
container_title	Ocean dynamics
authorswithroles_txt_mv	van der Wal, Daphne @@aut@@ van Kessel, Thijs @@aut@@ Eleveld, Marieke A. @@aut@@ Vanlede, Joris @@aut@@
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author	van der Wal, Daphne
spellingShingle	van der Wal, Daphne ddc 550 ssgn 14 bkl 38.90$jOzeanologie$jOzeanographie misc Satellite remote sensing misc Cohesive sediment transport model misc Suspended sediment misc Intertidal bed sediment misc Bed roughness misc Water-bed exchange misc Westerschelde Spatial heterogeneity in estuarine mud dynamics
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topic_title	550 VZ 14 ssgn 38.90$jOzeanologie$jOzeanographie bkl Spatial heterogeneity in estuarine mud dynamics Satellite remote sensing Cohesive sediment transport model Suspended sediment Intertidal bed sediment Bed roughness Water-bed exchange Westerschelde
topic	ddc 550 ssgn 14 bkl 38.90$jOzeanologie$jOzeanographie misc Satellite remote sensing misc Cohesive sediment transport model misc Suspended sediment misc Intertidal bed sediment misc Bed roughness misc Water-bed exchange misc Westerschelde
topic_unstemmed	ddc 550 ssgn 14 bkl 38.90$jOzeanologie$jOzeanographie misc Satellite remote sensing misc Cohesive sediment transport model misc Suspended sediment misc Intertidal bed sediment misc Bed roughness misc Water-bed exchange misc Westerschelde
topic_browse	ddc 550 ssgn 14 bkl 38.90$jOzeanologie$jOzeanographie misc Satellite remote sensing misc Cohesive sediment transport model misc Suspended sediment misc Intertidal bed sediment misc Bed roughness misc Water-bed exchange misc Westerschelde
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title	Spatial heterogeneity in estuarine mud dynamics
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title_full	Spatial heterogeneity in estuarine mud dynamics
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title_sort	spatial heterogeneity in estuarine mud dynamics
title_auth	Spatial heterogeneity in estuarine mud dynamics
abstract	Abstract The fate of mud in an estuary over an entire year was unravelled using complementary, independent, spatially explicit techniques. Sequential ERS-2 SAR and Envisat MERIS-FR data were used to derive synoptic changes in intertidal bottom mud and suspended particulate matter (SPM) in the top of the water column, respectively. These satellite data were combined with in situ measurements and with a high resolution three-dimensional cohesive sediment model, simulating mud transport, resuspension, settling and deposition under the influence of tides, wind, waves and freshwater discharge. The spatial distribution of both bottom mud and SPM as observed by in situ and satellite techniques was largely explained by modelled estuarine circulation, tidal and wind-induced variations in vertical mixing and horizontal advection. The three data sources also showed similar spring-neap and seasonal variations in SPM (all factor 1.5 to 2), but semi-diurnal tidal variations were underestimated by the model. Satellite data revealed that changes in intertidal bottom mud were spatially heterogeneous, but on average mud content doubled during summer, which was confirmed by in situ data. The model did not show such seasonal variation in bed sediment, suggesting that seasonal dynamics are not well explained by the physical factors presently implemented in the model, but may be largely attributed to other (internal) factors, including increased floc size in summer, temporal stabilisation of the sediment by microphytobenthos and a substantially lower roughness of the intertidal bed in summer as observed by the satellite. The effects of such factors on estuarine mud dynamics were evaluated. © The Author(s) 2010
abstractGer	Abstract The fate of mud in an estuary over an entire year was unravelled using complementary, independent, spatially explicit techniques. Sequential ERS-2 SAR and Envisat MERIS-FR data were used to derive synoptic changes in intertidal bottom mud and suspended particulate matter (SPM) in the top of the water column, respectively. These satellite data were combined with in situ measurements and with a high resolution three-dimensional cohesive sediment model, simulating mud transport, resuspension, settling and deposition under the influence of tides, wind, waves and freshwater discharge. The spatial distribution of both bottom mud and SPM as observed by in situ and satellite techniques was largely explained by modelled estuarine circulation, tidal and wind-induced variations in vertical mixing and horizontal advection. The three data sources also showed similar spring-neap and seasonal variations in SPM (all factor 1.5 to 2), but semi-diurnal tidal variations were underestimated by the model. Satellite data revealed that changes in intertidal bottom mud were spatially heterogeneous, but on average mud content doubled during summer, which was confirmed by in situ data. The model did not show such seasonal variation in bed sediment, suggesting that seasonal dynamics are not well explained by the physical factors presently implemented in the model, but may be largely attributed to other (internal) factors, including increased floc size in summer, temporal stabilisation of the sediment by microphytobenthos and a substantially lower roughness of the intertidal bed in summer as observed by the satellite. The effects of such factors on estuarine mud dynamics were evaluated. © The Author(s) 2010
abstract_unstemmed	Abstract The fate of mud in an estuary over an entire year was unravelled using complementary, independent, spatially explicit techniques. Sequential ERS-2 SAR and Envisat MERIS-FR data were used to derive synoptic changes in intertidal bottom mud and suspended particulate matter (SPM) in the top of the water column, respectively. These satellite data were combined with in situ measurements and with a high resolution three-dimensional cohesive sediment model, simulating mud transport, resuspension, settling and deposition under the influence of tides, wind, waves and freshwater discharge. The spatial distribution of both bottom mud and SPM as observed by in situ and satellite techniques was largely explained by modelled estuarine circulation, tidal and wind-induced variations in vertical mixing and horizontal advection. The three data sources also showed similar spring-neap and seasonal variations in SPM (all factor 1.5 to 2), but semi-diurnal tidal variations were underestimated by the model. Satellite data revealed that changes in intertidal bottom mud were spatially heterogeneous, but on average mud content doubled during summer, which was confirmed by in situ data. The model did not show such seasonal variation in bed sediment, suggesting that seasonal dynamics are not well explained by the physical factors presently implemented in the model, but may be largely attributed to other (internal) factors, including increased floc size in summer, temporal stabilisation of the sediment by microphytobenthos and a substantially lower roughness of the intertidal bed in summer as observed by the satellite. The effects of such factors on estuarine mud dynamics were evaluated. © The Author(s) 2010
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title_short	Spatial heterogeneity in estuarine mud dynamics
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