Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica
We show that it is possible to extract a high-resolution (annual) paleoclimate record from the surface of a blue-ice area (BIA). The variability of the surface stable-isotope values suggests that almost all the surface ice in Scharffenbergbotnen BIA, East Antarctica, is of Holocene age. The isotopic...
Main Authors: | , , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2007
|
Subjects: | |
Online Access: | https://hdl.handle.net/11370/5e4adef6-8e82-483b-bf3c-9415bbf62e39 https://research.rug.nl/en/publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 |
id |
ftunigroningenpu:oai:pure.rug.nl:publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 |
---|---|
record_format |
openpolar |
spelling |
ftunigroningenpu:oai:pure.rug.nl:publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 2024-06-02T07:55:51+00:00 Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica Sinisalo, Anna Grinsted, Aslak Moore, John C. Meijer, Harro A. J. Martma, Tonu Van De Wal, Roderik S. W. 2007 https://hdl.handle.net/11370/5e4adef6-8e82-483b-bf3c-9415bbf62e39 https://research.rug.nl/en/publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 eng eng https://research.rug.nl/en/publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 info:eu-repo/semantics/restrictedAccess Sinisalo , A , Grinsted , A , Moore , J C , Meijer , H A J , Martma , T & Van De Wal , R S W 2007 , ' Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica ' , Journal of Glaciology , vol. 53 , no. 182 , pp. 427-434 . DRONNING-MAUD-LAND SURFACE MASS-BALANCE TEMPERATURE-CHANGES DEUTERIUM EXCESS METEOROLOGICAL CONDITIONS CLIMATE VARIABILITY PRECIPITATION VOSTOK CORES SNOW article 2007 ftunigroningenpu 2024-05-07T18:31:36Z We show that it is possible to extract a high-resolution (annual) paleoclimate record from the surface of a blue-ice area (BIA). The variability of the surface stable-isotope values suggests that almost all the surface ice in Scharffenbergbotnen BIA, East Antarctica, is of Holocene age. The isotopic changes across the BIA show that the modern climate there is warmer than the climate in the early-Holocene optimum (11 kyr Bp). A volume-conserving ice flow model for the BIA constrained by isotopic variability and layer thicknesses, and a series of 14 C ages indicate both that the BIA has been smaller than now, and that the surface velocities were considerably smaller during the Last Glacial Maximum. Changes in ice-sheet thickness drive the BIA towards present-day conditions. The relatively young age of the majority of the BIA also explains the lack of meteorite finds in this area, and may be typical for many BlAs in low-elevation nunatak areas. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal Dronning Maud Land East Antarctica Ice Sheet Journal of Glaciology University of Groningen research database Bia ENVELOPE(22.891,22.891,70.317,70.317) Dronning Maud Land East Antarctica Scharffenbergbotnen ENVELOPE(-11.092,-11.092,-74.575,-74.575) |
institution |
Open Polar |
collection |
University of Groningen research database |
op_collection_id |
ftunigroningenpu |
language |
English |
topic |
DRONNING-MAUD-LAND SURFACE MASS-BALANCE TEMPERATURE-CHANGES DEUTERIUM EXCESS METEOROLOGICAL CONDITIONS CLIMATE VARIABILITY PRECIPITATION VOSTOK CORES SNOW |
spellingShingle |
DRONNING-MAUD-LAND SURFACE MASS-BALANCE TEMPERATURE-CHANGES DEUTERIUM EXCESS METEOROLOGICAL CONDITIONS CLIMATE VARIABILITY PRECIPITATION VOSTOK CORES SNOW Sinisalo, Anna Grinsted, Aslak Moore, John C. Meijer, Harro A. J. Martma, Tonu Van De Wal, Roderik S. W. Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
topic_facet |
DRONNING-MAUD-LAND SURFACE MASS-BALANCE TEMPERATURE-CHANGES DEUTERIUM EXCESS METEOROLOGICAL CONDITIONS CLIMATE VARIABILITY PRECIPITATION VOSTOK CORES SNOW |
description |
We show that it is possible to extract a high-resolution (annual) paleoclimate record from the surface of a blue-ice area (BIA). The variability of the surface stable-isotope values suggests that almost all the surface ice in Scharffenbergbotnen BIA, East Antarctica, is of Holocene age. The isotopic changes across the BIA show that the modern climate there is warmer than the climate in the early-Holocene optimum (11 kyr Bp). A volume-conserving ice flow model for the BIA constrained by isotopic variability and layer thicknesses, and a series of 14 C ages indicate both that the BIA has been smaller than now, and that the surface velocities were considerably smaller during the Last Glacial Maximum. Changes in ice-sheet thickness drive the BIA towards present-day conditions. The relatively young age of the majority of the BIA also explains the lack of meteorite finds in this area, and may be typical for many BlAs in low-elevation nunatak areas. |
format |
Article in Journal/Newspaper |
author |
Sinisalo, Anna Grinsted, Aslak Moore, John C. Meijer, Harro A. J. Martma, Tonu Van De Wal, Roderik S. W. |
author_facet |
Sinisalo, Anna Grinsted, Aslak Moore, John C. Meijer, Harro A. J. Martma, Tonu Van De Wal, Roderik S. W. |
author_sort |
Sinisalo, Anna |
title |
Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
title_short |
Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
title_full |
Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
title_fullStr |
Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
title_full_unstemmed |
Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica |
title_sort |
inferences from stable water isotopes on the holocene evolution of scharffenbergbotnen blue-ice area, east antarctica |
publishDate |
2007 |
url |
https://hdl.handle.net/11370/5e4adef6-8e82-483b-bf3c-9415bbf62e39 https://research.rug.nl/en/publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 |
long_lat |
ENVELOPE(22.891,22.891,70.317,70.317) ENVELOPE(-11.092,-11.092,-74.575,-74.575) |
geographic |
Bia Dronning Maud Land East Antarctica Scharffenbergbotnen |
geographic_facet |
Bia Dronning Maud Land East Antarctica Scharffenbergbotnen |
genre |
Antarc* Antarctica Antarctica Journal Dronning Maud Land East Antarctica Ice Sheet Journal of Glaciology |
genre_facet |
Antarc* Antarctica Antarctica Journal Dronning Maud Land East Antarctica Ice Sheet Journal of Glaciology |
op_source |
Sinisalo , A , Grinsted , A , Moore , J C , Meijer , H A J , Martma , T & Van De Wal , R S W 2007 , ' Inferences from stable water isotopes on the Holocene evolution of Scharffenbergbotnen blue-ice area, East Antarctica ' , Journal of Glaciology , vol. 53 , no. 182 , pp. 427-434 . |
op_relation |
https://research.rug.nl/en/publications/5e4adef6-8e82-483b-bf3c-9415bbf62e39 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
_version_ |
1800751676568633344 |