Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula
Substantial retreat or disintegration of numerous ice shelves have been observed on the Antarctic Peninsula. The ice shelf in the Prince Gustav Channel retreated gradually since the late 1980's and broke-up in 1995. Tributary glaciers reacted with speed-up, surface lowering and increased ice di...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.859255 2024-09-15T17:43:57+00:00 Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula Seehaus, Thorsten Marinsek, Sebastián Skvarca, Pedro van Wessem, Jan Melchior Tijm-Reijmer, Carleen H Seco, José Braun, Matthias Holger LATITUDE: -64.230000 * LONGITUDE: -59.000000 2016 application/zip, 93.2 MBytes https://doi.pangaea.de/10.1594/PANGAEA.859255 https://doi.org/10.1594/PANGAEA.859255 en eng PANGAEA Description of data files. https://store.pangaea.de/Publications/Seehaus-etal_2016/Data_Description_Seehaus_et_al_2016.pdf https://doi.pangaea.de/10.1594/PANGAEA.859255 https://doi.org/10.1594/PANGAEA.859255 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Institut für Geographie, Friedrich-Alexander-Universität, Erlangen-Nürnberg Supplement to: Seehaus, Thorsten; Marinsek, Sebastián; Skvarca, Pedro; van Wessem, Jan Melchior; Tijm-Reijmer, Carleen H; Seco, José; Braun, Matthias Holger (2016): Dynamic response of Sjögren Inlet glaciers, Antarctic Peninsula, to ice shelf breakup derived from multi-mission remote sensing time series. Frontiers in Earth Science Section; Section: Cryospheric Sciences, 4(66), 1-13, https://doi.org/10.3389/feart.2016.00066 Antarctic Peninsula MULT Multiple investigations Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sjögren SPP1158 dataset 2016 ftpangaea https://doi.org/10.1594/PANGAEA.85925510.3389/feart.2016.00066 2024-07-24T02:31:33Z Substantial retreat or disintegration of numerous ice shelves have been observed on the Antarctic Peninsula. The ice shelf in the Prince Gustav Channel retreated gradually since the late 1980's and broke-up in 1995. Tributary glaciers reacted with speed-up, surface lowering and increased ice discharge, consequently contributing to sea level rise. We present a detailed long-term study (1993-2014) on the dynamic response of Sjögren Inlet glaciers to the disintegration of Prince Gustav Ice Shelf. We analyzed various remote sensing datasets to observe the reactions of the glaciers to the loss of the buttressing ice shelf. A strong increase in ice surface velocities was observed with maximum flow speeds reaching 2.82±0.48 m/d in 2007 and 1.50±0.32 m/d in 2004 at Sjögren and Boydell glaciers respectively. Subsequently, the flow velocities decelerated, however in late 2014, we still measured about two times the values of our first measurements in 1996. The tributary glaciers retreated 61.7±3.1 km² behind the former grounding line of the ice shelf. In regions below 1000 m a.s.l., a mean surface lowering of -68±10 m (-3.1 m/a) was observed in the period 1993-2014. The lowering rate decreased to -2.2 m/a in recent years. Based on the surface lowering rates, geodetic mass balances of the glaciers were derived for different time steps. High mass loss rate of -1.21±0.36 Gt/a was found in the earliest period (1993-2001). Due to the dynamic adjustments of the glaciers to the new boundary conditions the ice mass loss reduced to -0.59±0.11 Gt/a in the period 2012-2014, resulting in an average mass loss rate of -0.89±0.16 Gt/a (1993-2014). Including the retreat of the ice front and grounding line, a total mass change of -38.5±7.7 Gt and a contribution to sea level rise of 0.061±0.013 mm were computed. Analysis of the ice flux revealed that available bedrock elevation estimates at Sjögren Inlet are too shallow and are the major uncertainty in ice flux computations. This temporally dense time series analysis of Sjögren Inlet ... Dataset Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Prince Gustav Ice Shelf Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-59.000000,-59.000000,-64.230000,-64.230000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Antarctic Peninsula MULT Multiple investigations Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sjögren SPP1158 |
spellingShingle |
Antarctic Peninsula MULT Multiple investigations Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sjögren SPP1158 Seehaus, Thorsten Marinsek, Sebastián Skvarca, Pedro van Wessem, Jan Melchior Tijm-Reijmer, Carleen H Seco, José Braun, Matthias Holger Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
topic_facet |
Antarctic Peninsula MULT Multiple investigations Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas Sjögren SPP1158 |
description |
Substantial retreat or disintegration of numerous ice shelves have been observed on the Antarctic Peninsula. The ice shelf in the Prince Gustav Channel retreated gradually since the late 1980's and broke-up in 1995. Tributary glaciers reacted with speed-up, surface lowering and increased ice discharge, consequently contributing to sea level rise. We present a detailed long-term study (1993-2014) on the dynamic response of Sjögren Inlet glaciers to the disintegration of Prince Gustav Ice Shelf. We analyzed various remote sensing datasets to observe the reactions of the glaciers to the loss of the buttressing ice shelf. A strong increase in ice surface velocities was observed with maximum flow speeds reaching 2.82±0.48 m/d in 2007 and 1.50±0.32 m/d in 2004 at Sjögren and Boydell glaciers respectively. Subsequently, the flow velocities decelerated, however in late 2014, we still measured about two times the values of our first measurements in 1996. The tributary glaciers retreated 61.7±3.1 km² behind the former grounding line of the ice shelf. In regions below 1000 m a.s.l., a mean surface lowering of -68±10 m (-3.1 m/a) was observed in the period 1993-2014. The lowering rate decreased to -2.2 m/a in recent years. Based on the surface lowering rates, geodetic mass balances of the glaciers were derived for different time steps. High mass loss rate of -1.21±0.36 Gt/a was found in the earliest period (1993-2001). Due to the dynamic adjustments of the glaciers to the new boundary conditions the ice mass loss reduced to -0.59±0.11 Gt/a in the period 2012-2014, resulting in an average mass loss rate of -0.89±0.16 Gt/a (1993-2014). Including the retreat of the ice front and grounding line, a total mass change of -38.5±7.7 Gt and a contribution to sea level rise of 0.061±0.013 mm were computed. Analysis of the ice flux revealed that available bedrock elevation estimates at Sjögren Inlet are too shallow and are the major uncertainty in ice flux computations. This temporally dense time series analysis of Sjögren Inlet ... |
format |
Dataset |
author |
Seehaus, Thorsten Marinsek, Sebastián Skvarca, Pedro van Wessem, Jan Melchior Tijm-Reijmer, Carleen H Seco, José Braun, Matthias Holger |
author_facet |
Seehaus, Thorsten Marinsek, Sebastián Skvarca, Pedro van Wessem, Jan Melchior Tijm-Reijmer, Carleen H Seco, José Braun, Matthias Holger |
author_sort |
Seehaus, Thorsten |
title |
Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
title_short |
Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
title_full |
Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
title_fullStr |
Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
title_full_unstemmed |
Surface velocity fields, digital elevation models and ice front positions derived from multi-mission SAR remote sensing data at Sjögren Inlet glaciers, Antarctic Peninsula |
title_sort |
surface velocity fields, digital elevation models and ice front positions derived from multi-mission sar remote sensing data at sjögren inlet glaciers, antarctic peninsula |
publisher |
PANGAEA |
publishDate |
2016 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.859255 https://doi.org/10.1594/PANGAEA.859255 |
op_coverage |
LATITUDE: -64.230000 * LONGITUDE: -59.000000 |
long_lat |
ENVELOPE(-59.000000,-59.000000,-64.230000,-64.230000) |
genre |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Prince Gustav Ice Shelf Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ice Shelf Ice Shelves Prince Gustav Ice Shelf Sea ice |
op_source |
Institut für Geographie, Friedrich-Alexander-Universität, Erlangen-Nürnberg Supplement to: Seehaus, Thorsten; Marinsek, Sebastián; Skvarca, Pedro; van Wessem, Jan Melchior; Tijm-Reijmer, Carleen H; Seco, José; Braun, Matthias Holger (2016): Dynamic response of Sjögren Inlet glaciers, Antarctic Peninsula, to ice shelf breakup derived from multi-mission remote sensing time series. Frontiers in Earth Science Section; Section: Cryospheric Sciences, 4(66), 1-13, https://doi.org/10.3389/feart.2016.00066 |
op_relation |
Description of data files. https://store.pangaea.de/Publications/Seehaus-etal_2016/Data_Description_Seehaus_et_al_2016.pdf https://doi.pangaea.de/10.1594/PANGAEA.859255 https://doi.org/10.1594/PANGAEA.859255 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.85925510.3389/feart.2016.00066 |
_version_ |
1810491190487810048 |