Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica
Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea
Gespeichert in:
| Autor*in: |
Dziadek, Ricarda [verfasserIn] |
|---|---|
| Körperschaften: |
Universität Bremen [Grad-verleihende Institution] |
| Hochschulschrift: |
Dissertation ; Universität Bremen ; 2018 |
| Format: |
E-Book |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
Bremen: 2018 |
|---|
| Formangabe: |
Hochschulschrift |
|---|
| Umfang: |
1 Online-Ressource (XXIII, 109, ix Seiten) ; Illustrationen |
|---|
| Weitere Ausgabe: |
Erscheint auch als Druck-Ausgabe Dziadek, Ricarda: Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica - Bremen, 2018 |
|---|
| Links: |
|---|
| DOI / URN: |
urn:nbn:de:gbv:46-00106887-18 |
|---|
| Katalog-ID: |
1041244606 |
|---|
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| 520 | |a The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. | ||
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Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Dziadek, Ricarda Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Bremen, 2018 XXIII, 109, ix Seiten (DE-627)1041244347 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 Resolving-System kostenfrei Volltext http://nbn-resolving.org/urn:nbn:de:gbv:46-00106887-18 2019-01-09 Resolving-System Volltext http://d-nb.info/1172879397/34 2019-01-09 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106887-1.pdf 2019-01-09 Verlag kostenfrei Volltext 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_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1839399945 x 10-01-19 21 01 0046 1829400584 ebook_2018_dissbremen Kostenloser Zugriff zza 30-11-18 22 01 0018 1839420499 SUBolrd xu 10-01-19 23 01 0830 1839430427 olr-d x 10-01-19 30 01 0104 1839437308 z 10-01-19 40 01 0007 183944262X xsn 10-01-19 60 01 0705 1839451947 OLRD z 10-01-19 63 01 3401 1839461519 ORD x 10-01-19 65 01 0003 4168259633 GBV-ODiss Open Access z 17-07-22 70 01 0089 183946660X zdo 10-01-19 105 01 0841 183952944X z 10-01-19 110 01 3110 1839473622 x 10-01-19 132 01 0959 1839483784 OLR-DISS x 10-01-19 151 01 0546 4159408796 OLR-ODISS z 30-06-22 161 01 0960 1839494085 ORD z 10-01-19 293 01 3293 1839518081 ORD z 10-01-19 370 01 4370 1839527846 x 10-01-19 2403 01 DE-LFER 3480445322 00 --%%-- --%%-- n --%%-- l01 01-06-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 05: Geowissenschaften (FB 05) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2019-01-10:11:55:35 |
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Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Dziadek, Ricarda Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Bremen, 2018 XXIII, 109, ix Seiten (DE-627)1041244347 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 Resolving-System kostenfrei Volltext http://nbn-resolving.org/urn:nbn:de:gbv:46-00106887-18 2019-01-09 Resolving-System Volltext http://d-nb.info/1172879397/34 2019-01-09 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106887-1.pdf 2019-01-09 Verlag kostenfrei Volltext 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_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1839399945 x 10-01-19 21 01 0046 1829400584 ebook_2018_dissbremen Kostenloser Zugriff zza 30-11-18 22 01 0018 1839420499 SUBolrd xu 10-01-19 23 01 0830 1839430427 olr-d x 10-01-19 30 01 0104 1839437308 z 10-01-19 40 01 0007 183944262X xsn 10-01-19 60 01 0705 1839451947 OLRD z 10-01-19 63 01 3401 1839461519 ORD x 10-01-19 65 01 0003 4168259633 GBV-ODiss Open Access z 17-07-22 70 01 0089 183946660X zdo 10-01-19 105 01 0841 183952944X z 10-01-19 110 01 3110 1839473622 x 10-01-19 132 01 0959 1839483784 OLR-DISS x 10-01-19 151 01 0546 4159408796 OLR-ODISS z 30-06-22 161 01 0960 1839494085 ORD z 10-01-19 293 01 3293 1839518081 ORD z 10-01-19 370 01 4370 1839527846 x 10-01-19 2403 01 DE-LFER 3480445322 00 --%%-- --%%-- n --%%-- l01 01-06-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 05: Geowissenschaften (FB 05) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2019-01-10:11:55:35 |
| allfields_unstemmed |
19,O01 dnb 1172879397 DE-101 urn:nbn:de:gbv:46-00106887-18 urn (DE-627)1041244606 (DE-599)GBV1041244606 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Dziadek, Ricarda verfasserin aut Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Author: Ricarda Dziadek Bremen 2018 1 Online-Ressource (XXIII, 109, ix Seiten) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Dziadek, Ricarda Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Bremen, 2018 XXIII, 109, ix Seiten (DE-627)1041244347 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 Resolving-System kostenfrei Volltext http://nbn-resolving.org/urn:nbn:de:gbv:46-00106887-18 2019-01-09 Resolving-System Volltext http://d-nb.info/1172879397/34 2019-01-09 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106887-1.pdf 2019-01-09 Verlag kostenfrei Volltext 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_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1839399945 x 10-01-19 21 01 0046 1829400584 ebook_2018_dissbremen Kostenloser Zugriff zza 30-11-18 22 01 0018 1839420499 SUBolrd xu 10-01-19 23 01 0830 1839430427 olr-d x 10-01-19 30 01 0104 1839437308 z 10-01-19 40 01 0007 183944262X xsn 10-01-19 60 01 0705 1839451947 OLRD z 10-01-19 63 01 3401 1839461519 ORD x 10-01-19 65 01 0003 4168259633 GBV-ODiss Open Access z 17-07-22 70 01 0089 183946660X zdo 10-01-19 105 01 0841 183952944X z 10-01-19 110 01 3110 1839473622 x 10-01-19 132 01 0959 1839483784 OLR-DISS x 10-01-19 151 01 0546 4159408796 OLR-ODISS z 30-06-22 161 01 0960 1839494085 ORD z 10-01-19 293 01 3293 1839518081 ORD z 10-01-19 370 01 4370 1839527846 x 10-01-19 2403 01 DE-LFER 3480445322 00 --%%-- --%%-- n --%%-- l01 01-06-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 05: Geowissenschaften (FB 05) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2019-01-10:11:55:35 |
| allfieldsGer |
19,O01 dnb 1172879397 DE-101 urn:nbn:de:gbv:46-00106887-18 urn (DE-627)1041244606 (DE-599)GBV1041244606 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Dziadek, Ricarda verfasserin aut Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Author: Ricarda Dziadek Bremen 2018 1 Online-Ressource (XXIII, 109, ix Seiten) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. Archivierung/Langzeitarchivierung gewährleistet pdager DE-101 Hochschulschrift (DE-588)4113937-9 (DE-627)105825778 (DE-576)209480580 gnd-content Universität Bremen Grad-verleihende Institution (DE-588)2001386-3 (DE-627)101380429 (DE-576)191575038 dgg Bremen (DE-588)4008135-7 (DE-627)106369636 (DE-576)208874569 uvp Erscheint auch als Druck-Ausgabe Dziadek, Ricarda Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Bremen, 2018 XXIII, 109, ix Seiten (DE-627)1041244347 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 Resolving-System kostenfrei Volltext http://nbn-resolving.org/urn:nbn:de:gbv:46-00106887-18 2019-01-09 Resolving-System Volltext http://d-nb.info/1172879397/34 2019-01-09 Langzeitarchivierung Nationalbibliothek Volltext http://elib.suub.uni-bremen.de/edocs/00106887-1.pdf 2019-01-09 Verlag kostenfrei Volltext 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_65 ISIL_DE-3 GBV_ILN_70 ISIL_DE-89 GBV_ILN_105 ISIL_DE-841 GBV_ILN_110 ISIL_DE-Luen4 GBV_ILN_132 ISIL_DE-959 GBV_ILN_151 ISIL_DE-546 GBV_ILN_161 ISIL_DE-960 GBV_ILN_293 ISIL_DE-960-3 GBV_ILN_370 ISIL_DE-1373 GBV_ILN_2403 ISIL_DE-LFER BO 20 01 0084 1839399945 x 10-01-19 21 01 0046 1829400584 ebook_2018_dissbremen Kostenloser Zugriff zza 30-11-18 22 01 0018 1839420499 SUBolrd xu 10-01-19 23 01 0830 1839430427 olr-d x 10-01-19 30 01 0104 1839437308 z 10-01-19 40 01 0007 183944262X xsn 10-01-19 60 01 0705 1839451947 OLRD z 10-01-19 63 01 3401 1839461519 ORD x 10-01-19 65 01 0003 4168259633 GBV-ODiss Open Access z 17-07-22 70 01 0089 183946660X zdo 10-01-19 105 01 0841 183952944X z 10-01-19 110 01 3110 1839473622 x 10-01-19 132 01 0959 1839483784 OLR-DISS x 10-01-19 151 01 0546 4159408796 OLR-ODISS z 30-06-22 161 01 0960 1839494085 ORD z 10-01-19 293 01 3293 1839518081 ORD z 10-01-19 370 01 4370 1839527846 x 10-01-19 2403 01 DE-LFER 3480445322 00 --%%-- --%%-- n --%%-- l01 01-06-19 20 01 0084 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 01 0046 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 22 01 0018 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 23 01 0830 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 30 01 0104 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 40 01 0007 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 60 01 0705 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 63 01 3401 E-Book http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 LF 65 01 0003 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 70 01 0089 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 105 01 0841 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 110 01 3110 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 132 01 0959 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 151 01 0546 Volltext http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 161 01 0960 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 293 01 3293 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 370 01 4370 http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 2403 01 DE-LFER http://nbn-resolving.de/urn:nbn:de:gbv:46-00106887-18 21 00 DE-46 00 Universität Bremen 21 00 DE-46 00 Fachbereich 05: Geowissenschaften (FB 05) 21 00 DE-46 99 07 60 01 0705 10 ho 20 01 0084 OLRD 110 01 3110 OLRD 370 01 4370 OLRD 21 01 0046 ebook_2018_dissbremen 22 01 0018 SUBolrd 23 01 0830 olr-d 60 01 0705 OLRD 63 01 3401 ORD 65 01 0003 GBV-ODiss 132 01 0959 OLR-DISS 151 01 0546 OLR-ODISS 161 01 0960 ORD 293 01 3293 ORD 23 01 0830 2019-01-10:11:55:35 |
| allfieldsSound |
19,O01 dnb 1172879397 DE-101 urn:nbn:de:gbv:46-00106887-18 urn (DE-627)1041244606 (DE-599)GBV1041244606 DE-627 ger DE-627 rda eng XA-DE 550 DE-101 Dziadek, Ricarda verfasserin aut Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica Author: Ricarda Dziadek Bremen 2018 1 Online-Ressource (XXIII, 109, ix Seiten) Illustrationen Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Dissertation Universität Bremen 2018 Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. 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Geothermal Heat Flow in the Amundsen Sea Sector of West Antarctica |
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Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. |
| abstractGer |
Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. |
| abstract_unstemmed |
Geothermal Heat Flow, West Antarctica, Curie Depth, Amundsen Sea The ice sheet inWest Antarctica is underlain by theWest Antarctic Rift System, which yields critical geological boundary conditions. The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. In summary, the findings from the current thesis represent a significant advancement towards understanding of geothermal heat flow in the Amundsen Sea Sector of West Antarctica. |
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@@655@@(DE-588)4113937-9 @@dgg@@(DE-588)2001386-3 @@uvp@@(DE-588)4008135-7 |
| remote_bool |
true |
| author2 |
Universität Bremen |
| author2Str |
Universität Bremen |
| ppnlink |
1041244347 |
| GND_str_mv |
Hochschulschrift Universidad de Bremen Uniwersytet w Bremie University of Bremen Université de Brême Univ. Bremen Uniwersytet Bremeński Bremenskij Universitet Uni Bremen Universität Bremen Free Hanseatic City of Bremen Bremischer Staat Fabiranum Bremeischer Staat Phabiranum Pregmensis civitas Land Freie Hansestadt Bremen Bremae Stadtgemeinde Bremen Freie und Hansestadt Bremen Premensis civitas Brema Bremia Land und Stadtgemeinde Bremen Land Bremen Bremensis civitas Freie Hansestadt Bremen Hansestadt Bremen Fabirana Saxonum Heberanum Brême Bremen |
| GND_txt_mv |
Hochschulschrift Universidad de Bremen Uniwersytet w Bremie University of Bremen Université de Brême Univ. Bremen Uniwersytet Bremeński Bremenskij Universitet Uni Bremen Universität Bremen Free Hanseatic City of Bremen Bremischer Staat Fabiranum Bremeischer Staat Phabiranum Pregmensis civitas Land Freie Hansestadt Bremen Bremae Stadtgemeinde Bremen Freie und Hansestadt Bremen Premensis civitas Brema Bremia Land und Stadtgemeinde Bremen Land Bremen Bremensis civitas Freie Hansestadt Bremen Hansestadt Bremen Fabirana Saxonum Heberanum Brême Bremen |
| GND_txtF_mv |
Hochschulschrift Universidad de Bremen Uniwersytet w Bremie University of Bremen Université de Brême Univ. Bremen Uniwersytet Bremeński Bremenskij Universitet Uni Bremen Universität Bremen Free Hanseatic City of Bremen Bremischer Staat Fabiranum Bremeischer Staat Phabiranum Pregmensis civitas Land Freie Hansestadt Bremen Bremae Stadtgemeinde Bremen Freie und Hansestadt Bremen Premensis civitas Brema Bremia Land und Stadtgemeinde Bremen Land Bremen Bremensis civitas Freie Hansestadt Bremen Hansestadt Bremen Fabirana Saxonum Heberanum Brême Bremen |
| mediatype_str_mv |
c |
| isOA_txt |
true |
| hochschulschrift_bool |
true |
| callnumber-a |
--%%-- |
| up_date |
2024-07-04T15:51:16.020Z |
| _version_ |
1803664255640141824 |
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The bedrock geology and the crustal structure of the rift system may influence the dynamics of the overlying glaciers, which in turn affect the stability of the ice sheet. Previous geophysical surveys have traced the West Antarctic Rift System from the Ross Sea to the Bellingshausen Sea and compared it to other major continental rift zones, such as the East African Rift System or the Basin and Range Province. While the rift system in the Ross Sea sector is relatively well understood, the remaining part of the rift system surrounds a higher degree of uncertainty. Young, continental rift systems, such as the West Antarctic Rift System, are associated with high geothermal heat flow and elevated lithospheric geotherms. In-situ temperature observations of geothermal heat flow are extremely sparse in Antarctica, but present crucial thermal boundary conditions ice sheet models and related sea level rise predictions. Moreover, temperature measurements are urgently required to study geodynamic and tectonic processes, subglacial lakes, hydrologic networks and ecosystems beneath ice sheets, that remain largely unexplored. Indirect methods, that estimate geothermal heat flow on regional to continental scales show poor correlation, which leads to ambiguous results in e.g. ice sheet models. Scientifically, this project aims at contributing to the overall knowledge of the thermal state of the crust in the Amundsen Sea Sector. Within the context of this thesis, a novel suit of in-situ temperature measurements were collected in the Amundsen Sea Embayment during RV Polarstern expedition PS75 (2010) and PS104 (2017). A novel magnetic anomaly grid is further presented, which includes aeromagnetic data collected during RV Polarstern expedition PS104, as well as previous aeromagnetic surveys, and forms the base for investigations of the thermal state of the crust. By Curie depth estimates, based on spectral analysis of the magnetic anomaly data and numerical models in 2D and 3D, the spatial distribution of geothermal heat flow and the thermal architecture of the crust is examined. The main outcomes of the thesis are local estimates of geothermal heat flow of 60 mWm2 to 90 mWm2, which is likely biased towards higher values due to the temperature variability in the water column. Indirect estimates from numerical models in contrast point towards elevated ( 90 mWm2) and locally high ( 90 mWm2) geothermal heat flow. 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