Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica
Abstract The coast-parallel Dronning Maud Land (DML) mountains represent a key nucleation site for the protracted glaciation of Antarctica. Their evolution is therefore of special interest for understanding the formation and development of the Antarctic ice sheet. Extensive glacial erosion has clear...
Published in: | Communications Earth & Environment |
---|---|
Main Authors: | , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Springer Science and Business Media LLC
2021
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1038/s43247-021-00315-3 https://www.nature.com/articles/s43247-021-00315-3.pdf https://www.nature.com/articles/s43247-021-00315-3 |
id |
crspringernat:10.1038/s43247-021-00315-3 |
---|---|
record_format |
openpolar |
spelling |
crspringernat:10.1038/s43247-021-00315-3 2023-05-15T14:05:31+02:00 Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica Sirevaag, Hallgeir Jacobs, Joachim Ksienzyk, Anna K. Universitetet i Bergen 2021 http://dx.doi.org/10.1038/s43247-021-00315-3 https://www.nature.com/articles/s43247-021-00315-3.pdf https://www.nature.com/articles/s43247-021-00315-3 en eng Springer Science and Business Media LLC https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 General Earth and Planetary Sciences General Environmental Science journal-article 2021 crspringernat https://doi.org/10.1038/s43247-021-00315-3 2022-01-04T12:54:34Z Abstract The coast-parallel Dronning Maud Land (DML) mountains represent a key nucleation site for the protracted glaciation of Antarctica. Their evolution is therefore of special interest for understanding the formation and development of the Antarctic ice sheet. Extensive glacial erosion has clearly altered the landscape over the past 34 Myr. Yet, the total erosion still remains to be properly constrained. Here, we investigate the power of low-temperature thermochronology in quantifying glacial erosion in-situ. Our data document the differential erosion along the DML escarpment, with up to c. 1.5 and 2.4 km of erosion in western and central DML, respectively. Substantial erosion at the escarpment foothills, and limited erosion at high elevations and close to drainage divides, is consistent with an escarpment retreat model. Such differential erosion suggests major alterations of the landscape during 34 Myr of glaciation and should be implemented in future ice sheet models. Article in Journal/Newspaper Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Ice Sheet Springer Nature (via Crossref) Antarctic The Antarctic East Antarctica Dronning Maud Land Communications Earth & Environment 2 1 |
institution |
Open Polar |
collection |
Springer Nature (via Crossref) |
op_collection_id |
crspringernat |
language |
English |
topic |
General Earth and Planetary Sciences General Environmental Science |
spellingShingle |
General Earth and Planetary Sciences General Environmental Science Sirevaag, Hallgeir Jacobs, Joachim Ksienzyk, Anna K. Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
topic_facet |
General Earth and Planetary Sciences General Environmental Science |
description |
Abstract The coast-parallel Dronning Maud Land (DML) mountains represent a key nucleation site for the protracted glaciation of Antarctica. Their evolution is therefore of special interest for understanding the formation and development of the Antarctic ice sheet. Extensive glacial erosion has clearly altered the landscape over the past 34 Myr. Yet, the total erosion still remains to be properly constrained. Here, we investigate the power of low-temperature thermochronology in quantifying glacial erosion in-situ. Our data document the differential erosion along the DML escarpment, with up to c. 1.5 and 2.4 km of erosion in western and central DML, respectively. Substantial erosion at the escarpment foothills, and limited erosion at high elevations and close to drainage divides, is consistent with an escarpment retreat model. Such differential erosion suggests major alterations of the landscape during 34 Myr of glaciation and should be implemented in future ice sheet models. |
author2 |
Universitetet i Bergen |
format |
Article in Journal/Newspaper |
author |
Sirevaag, Hallgeir Jacobs, Joachim Ksienzyk, Anna K. |
author_facet |
Sirevaag, Hallgeir Jacobs, Joachim Ksienzyk, Anna K. |
author_sort |
Sirevaag, Hallgeir |
title |
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
title_short |
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
title_full |
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
title_fullStr |
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
title_full_unstemmed |
Substantial spatial variation in glacial erosion rates in the Dronning Maud Land Mountains, East Antarctica |
title_sort |
substantial spatial variation in glacial erosion rates in the dronning maud land mountains, east antarctica |
publisher |
Springer Science and Business Media LLC |
publishDate |
2021 |
url |
http://dx.doi.org/10.1038/s43247-021-00315-3 https://www.nature.com/articles/s43247-021-00315-3.pdf https://www.nature.com/articles/s43247-021-00315-3 |
geographic |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
geographic_facet |
Antarctic The Antarctic East Antarctica Dronning Maud Land |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica Ice Sheet |
op_source |
Communications Earth & Environment volume 2, issue 1 ISSN 2662-4435 |
op_rights |
https://creativecommons.org/licenses/by/4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s43247-021-00315-3 |
container_title |
Communications Earth & Environment |
container_volume |
2 |
container_issue |
1 |
_version_ |
1766277482229530624 |