Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica)
The Antarctic ice sheet's future contribution to sea level rise is difficult to predict, mostly because of the uncertainty and variability of the surface mass balance (SMB). Ice cores are used to locally (kilometer scale) reconstruct SMB with a very good temporal resolution (up to sub-annual),...
Published in: | Earth System Science Data |
---|---|
Main Authors: | , , , , , , , |
Format: | Text |
Language: | English |
Published: |
2024
|
Subjects: | |
Online Access: | https://doi.org/10.5194/essd-16-35-2024 https://essd.copernicus.org/articles/16/35/2024/ |
id |
ftcopernicus:oai:publications.copernicus.org:essd111038 |
---|---|
record_format |
openpolar |
spelling |
ftcopernicus:oai:publications.copernicus.org:essd111038 2024-02-04T09:56:00+01:00 Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) Wauthy, Sarah Tison, Jean-Louis Inoue, Mana Amri, Saïda Sun, Sainan Fripiat, François Claeys, Philippe Pattyn, Frank 2024-01-05 application/pdf https://doi.org/10.5194/essd-16-35-2024 https://essd.copernicus.org/articles/16/35/2024/ eng eng doi:10.5194/essd-16-35-2024 https://essd.copernicus.org/articles/16/35/2024/ eISSN: 1866-3516 Text 2024 ftcopernicus https://doi.org/10.5194/essd-16-35-2024 2024-01-08T17:24:16Z The Antarctic ice sheet's future contribution to sea level rise is difficult to predict, mostly because of the uncertainty and variability of the surface mass balance (SMB). Ice cores are used to locally (kilometer scale) reconstruct SMB with a very good temporal resolution (up to sub-annual), especially in coastal areas where accumulation rates are high. The number of ice core records has been increasing in recent years, revealing an important spatial variability and different trends of SMB, highlighting the crucial need for greater spatial and temporal representativeness. We present records of density, water stable isotopes ( δ 18 O , δ D , and deuterium excess), major ions concentrations ( Na + , K + , Mg 2+ , Ca 2+ , MSA, Cl − , SO 4 2 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="29pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="06a1e144313624090049b6627390d3e8"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-16-35-2024-ie00001.svg" width="29pt" height="17pt" src="essd-16-35-2024-ie00001.png"/></svg:svg> , and NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="dd23f13eb24280cbe650be4567ce8571"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-16-35-2024-ie00002.svg" width="25pt" height="16pt" src="essd-16-35-2024-ie00002.png"/></svg:svg> ), and continuous electrical conductivity measurement (ECM), as well as age models and resulting surface mass balance from the top 120 m of two ice cores (FK17 and TIR18) drilled on two adjacent ice rises located in coastal Dronning Maud Land and dating back to the end of the 18th century. Both environmental proxies and SMB show contrasting behaviors, suggesting strong spatial and temporal variability at the regional scale. In terms of precipitation proxies, both ice cores show a long-term decrease in deuterium excess (d-excess) and a long-term increase in δ 18 O , although less pronounced. ... Text Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core Copernicus Publications: E-Journals Antarctic Dronning Maud Land East Antarctica The Antarctic Earth System Science Data 16 1 35 58 |
institution |
Open Polar |
collection |
Copernicus Publications: E-Journals |
op_collection_id |
ftcopernicus |
language |
English |
description |
The Antarctic ice sheet's future contribution to sea level rise is difficult to predict, mostly because of the uncertainty and variability of the surface mass balance (SMB). Ice cores are used to locally (kilometer scale) reconstruct SMB with a very good temporal resolution (up to sub-annual), especially in coastal areas where accumulation rates are high. The number of ice core records has been increasing in recent years, revealing an important spatial variability and different trends of SMB, highlighting the crucial need for greater spatial and temporal representativeness. We present records of density, water stable isotopes ( δ 18 O , δ D , and deuterium excess), major ions concentrations ( Na + , K + , Mg 2+ , Ca 2+ , MSA, Cl − , SO 4 2 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="29pt" height="17pt" class="svg-formula" dspmath="mathimg" md5hash="06a1e144313624090049b6627390d3e8"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-16-35-2024-ie00001.svg" width="29pt" height="17pt" src="essd-16-35-2024-ie00001.png"/></svg:svg> , and NO 3 - <svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="25pt" height="16pt" class="svg-formula" dspmath="mathimg" md5hash="dd23f13eb24280cbe650be4567ce8571"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="essd-16-35-2024-ie00002.svg" width="25pt" height="16pt" src="essd-16-35-2024-ie00002.png"/></svg:svg> ), and continuous electrical conductivity measurement (ECM), as well as age models and resulting surface mass balance from the top 120 m of two ice cores (FK17 and TIR18) drilled on two adjacent ice rises located in coastal Dronning Maud Land and dating back to the end of the 18th century. Both environmental proxies and SMB show contrasting behaviors, suggesting strong spatial and temporal variability at the regional scale. In terms of precipitation proxies, both ice cores show a long-term decrease in deuterium excess (d-excess) and a long-term increase in δ 18 O , although less pronounced. ... |
format |
Text |
author |
Wauthy, Sarah Tison, Jean-Louis Inoue, Mana Amri, Saïda Sun, Sainan Fripiat, François Claeys, Philippe Pattyn, Frank |
spellingShingle |
Wauthy, Sarah Tison, Jean-Louis Inoue, Mana Amri, Saïda Sun, Sainan Fripiat, François Claeys, Philippe Pattyn, Frank Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
author_facet |
Wauthy, Sarah Tison, Jean-Louis Inoue, Mana Amri, Saïda Sun, Sainan Fripiat, François Claeys, Philippe Pattyn, Frank |
author_sort |
Wauthy, Sarah |
title |
Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
title_short |
Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
title_full |
Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
title_fullStr |
Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
title_full_unstemmed |
Spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in Dronning Maud Land (East Antarctica) |
title_sort |
spatial and temporal variability of environmental proxies from the top 120 m of two ice cores in dronning maud land (east antarctica) |
publishDate |
2024 |
url |
https://doi.org/10.5194/essd-16-35-2024 https://essd.copernicus.org/articles/16/35/2024/ |
geographic |
Antarctic Dronning Maud Land East Antarctica The Antarctic |
geographic_facet |
Antarctic Dronning Maud Land East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica Dronning Maud Land East Antarctica ice core |
op_source |
eISSN: 1866-3516 |
op_relation |
doi:10.5194/essd-16-35-2024 https://essd.copernicus.org/articles/16/35/2024/ |
op_doi |
https://doi.org/10.5194/essd-16-35-2024 |
container_title |
Earth System Science Data |
container_volume |
16 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
58 |
_version_ |
1789960307376914432 |