Avannarleq and Kujalleq Glacial Stability ...
The evolution of Greenland glaciers in a warming climate depends on their depth below sea level, flow speed, surface melt, and ocean-induced undercutting at the calving front. We present an innovative mapping of bed topography in the frontal regions of Sermeq Avannarleq and Kujalleq, two major glaci...
Main Author: | |
---|---|
Format: | Dataset |
Language: | English |
Published: |
Dryad
2018
|
Subjects: | |
Online Access: | https://dx.doi.org/10.7280/d1dd39 https://datadryad.org/stash/dataset/doi:10.7280/D1DD39 |
id |
ftdatacite:10.7280/d1dd39 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.7280/d1dd39 2024-02-04T10:00:46+01:00 Avannarleq and Kujalleq Glacial Stability ... An, Lu 2018 https://dx.doi.org/10.7280/d1dd39 https://datadryad.org/stash/dataset/doi:10.7280/D1DD39 en eng Dryad Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Dataset dataset 2018 ftdatacite https://doi.org/10.7280/d1dd39 2024-01-05T04:51:50Z The evolution of Greenland glaciers in a warming climate depends on their depth below sea level, flow speed, surface melt, and ocean-induced undercutting at the calving front. We present an innovative mapping of bed topography in the frontal regions of Sermeq Avannarleq and Kujalleq, two major glaciers flowing into the ice-choked Torssukatak Fjord, central west Greenland. The mapping combines a mass conservation algorithm inland, multi-beam echo sounding data in the fjord, and high-resolution airborne gravity data at the ice-ocean transition where other approaches fail. We obtain a reliable, precision (± 40 m) solution for bed topography across the ice-ocean boundary. The results reveal a 700-m deep fjord that abruptly ends on a 100-300 m deep sill along the calving fronts. The shallow sills explain the presence of stranded icebergs, the resilience of the glaciers to ocean-induced undercutting, and their remarkable stability over the past century. An. L., E. Rignot, J. Mouginot, R. Milan, (2018), A century ... Dataset Greenland Kujalleq DataCite Metadata Store (German National Library of Science and Technology) Avannarleq ENVELOPE(-49.100,-49.100,62.133,62.133) Greenland Kujalleq ENVELOPE(-46.037,-46.037,60.719,60.719) Sermeq Avannarleq ENVELOPE(-50.833,-50.833,71.033,71.033) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
The evolution of Greenland glaciers in a warming climate depends on their depth below sea level, flow speed, surface melt, and ocean-induced undercutting at the calving front. We present an innovative mapping of bed topography in the frontal regions of Sermeq Avannarleq and Kujalleq, two major glaciers flowing into the ice-choked Torssukatak Fjord, central west Greenland. The mapping combines a mass conservation algorithm inland, multi-beam echo sounding data in the fjord, and high-resolution airborne gravity data at the ice-ocean transition where other approaches fail. We obtain a reliable, precision (± 40 m) solution for bed topography across the ice-ocean boundary. The results reveal a 700-m deep fjord that abruptly ends on a 100-300 m deep sill along the calving fronts. The shallow sills explain the presence of stranded icebergs, the resilience of the glaciers to ocean-induced undercutting, and their remarkable stability over the past century. An. L., E. Rignot, J. Mouginot, R. Milan, (2018), A century ... |
format |
Dataset |
author |
An, Lu |
spellingShingle |
An, Lu Avannarleq and Kujalleq Glacial Stability ... |
author_facet |
An, Lu |
author_sort |
An, Lu |
title |
Avannarleq and Kujalleq Glacial Stability ... |
title_short |
Avannarleq and Kujalleq Glacial Stability ... |
title_full |
Avannarleq and Kujalleq Glacial Stability ... |
title_fullStr |
Avannarleq and Kujalleq Glacial Stability ... |
title_full_unstemmed |
Avannarleq and Kujalleq Glacial Stability ... |
title_sort |
avannarleq and kujalleq glacial stability ... |
publisher |
Dryad |
publishDate |
2018 |
url |
https://dx.doi.org/10.7280/d1dd39 https://datadryad.org/stash/dataset/doi:10.7280/D1DD39 |
long_lat |
ENVELOPE(-49.100,-49.100,62.133,62.133) ENVELOPE(-46.037,-46.037,60.719,60.719) ENVELOPE(-50.833,-50.833,71.033,71.033) |
geographic |
Avannarleq Greenland Kujalleq Sermeq Avannarleq |
geographic_facet |
Avannarleq Greenland Kujalleq Sermeq Avannarleq |
genre |
Greenland Kujalleq |
genre_facet |
Greenland Kujalleq |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.7280/d1dd39 |
_version_ |
1789966227146276864 |