Bathymetry of the Amundsen Sea Embayment
We employ airborne gravity data from NASA's Operation IceBridge collected in 2009–2014 to infer the bathymetry of sub–ice shelf cavities in front of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica. We use a three‐dimensional inversion constrained by multibeam echo sounding da...
Main Author: | |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
2018
|
Subjects: | |
Online Access: | https://zenodo.org/record/4935499 https://doi.org/10.7280/D18Q1D |
id |
ftzenodo:oai:zenodo.org:4935499 |
---|---|
record_format |
openpolar |
spelling |
ftzenodo:oai:zenodo.org:4935499 2023-06-06T11:43:15+02:00 Bathymetry of the Amundsen Sea Embayment Millan, Romain 2018-03-23 https://zenodo.org/record/4935499 https://doi.org/10.7280/D18Q1D unknown https://zenodo.org/communities/dryad https://zenodo.org/record/4935499 https://doi.org/10.7280/D18Q1D oai:zenodo.org:4935499 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode info:eu-repo/semantics/other dataset 2018 ftzenodo https://doi.org/10.7280/D18Q1D 2023-04-13T22:51:14Z We employ airborne gravity data from NASA's Operation IceBridge collected in 2009–2014 to infer the bathymetry of sub–ice shelf cavities in front of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica. We use a three‐dimensional inversion constrained by multibeam echo sounding data offshore and bed topography from a mass conservation reconstruction on land. The seamless bed elevation data refine details of the Pine Island sub–ice shelf cavity, a slightly thinner cavity beneath Thwaites, and previously unknown deep (>1200 m) channels beneath the Crosson and Dotson ice shelves that shallow (500 m and 750 m, respectively) near the ice shelf fronts. These sub–ice shelf channels define the natural pathways for warm, circumpolar deep water to reach the glacier grounding lines, melt the ice shelves from below, and constrain the pattern of past and future glacial retreat. Millan, R., E. Rignot, V. Bernier, M. Morlighem, and P. Dutrieux (2017), Bathymetry of the Amundsen Sea Embayment sector of West Antarctica from Operation IceBridge gravity and other data, Geophys. Res. Lett., 44, 1360–1368, doi:10.1002/2016GL072071. Dataset Amundsen Sea Antarc* Antarctica Ice Shelf Ice Shelves Pine Island West Antarctica Zenodo Amundsen Sea West Antarctica |
institution |
Open Polar |
collection |
Zenodo |
op_collection_id |
ftzenodo |
language |
unknown |
description |
We employ airborne gravity data from NASA's Operation IceBridge collected in 2009–2014 to infer the bathymetry of sub–ice shelf cavities in front of Pine Island, Thwaites, Smith, and Kohler glaciers, West Antarctica. We use a three‐dimensional inversion constrained by multibeam echo sounding data offshore and bed topography from a mass conservation reconstruction on land. The seamless bed elevation data refine details of the Pine Island sub–ice shelf cavity, a slightly thinner cavity beneath Thwaites, and previously unknown deep (>1200 m) channels beneath the Crosson and Dotson ice shelves that shallow (500 m and 750 m, respectively) near the ice shelf fronts. These sub–ice shelf channels define the natural pathways for warm, circumpolar deep water to reach the glacier grounding lines, melt the ice shelves from below, and constrain the pattern of past and future glacial retreat. Millan, R., E. Rignot, V. Bernier, M. Morlighem, and P. Dutrieux (2017), Bathymetry of the Amundsen Sea Embayment sector of West Antarctica from Operation IceBridge gravity and other data, Geophys. Res. Lett., 44, 1360–1368, doi:10.1002/2016GL072071. |
format |
Dataset |
author |
Millan, Romain |
spellingShingle |
Millan, Romain Bathymetry of the Amundsen Sea Embayment |
author_facet |
Millan, Romain |
author_sort |
Millan, Romain |
title |
Bathymetry of the Amundsen Sea Embayment |
title_short |
Bathymetry of the Amundsen Sea Embayment |
title_full |
Bathymetry of the Amundsen Sea Embayment |
title_fullStr |
Bathymetry of the Amundsen Sea Embayment |
title_full_unstemmed |
Bathymetry of the Amundsen Sea Embayment |
title_sort |
bathymetry of the amundsen sea embayment |
publishDate |
2018 |
url |
https://zenodo.org/record/4935499 https://doi.org/10.7280/D18Q1D |
geographic |
Amundsen Sea West Antarctica |
geographic_facet |
Amundsen Sea West Antarctica |
genre |
Amundsen Sea Antarc* Antarctica Ice Shelf Ice Shelves Pine Island West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Ice Shelf Ice Shelves Pine Island West Antarctica |
op_relation |
https://zenodo.org/communities/dryad https://zenodo.org/record/4935499 https://doi.org/10.7280/D18Q1D oai:zenodo.org:4935499 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.7280/D18Q1D |
_version_ |
1767953924897112064 |