Intercomparison of firn core and meteorological data
High resolution firn core records of the oxygen isotope ratio (δ 18 O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the...
Published in: | Antarctic Science |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
2001
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0954102001000463 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000463 |
id |
crcambridgeupr:10.1017/s0954102001000463 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0954102001000463 2024-03-03T08:38:27+00:00 Intercomparison of firn core and meteorological data McMorrow, Alison J. Curran, Mark A.J. Ommen, Tas D. Van Morgan, Vin Pook, Michael J. Allison, Ian 2001 http://dx.doi.org/10.1017/s0954102001000463 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000463 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 13, issue 3, page 329-337 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2001 crcambridgeupr https://doi.org/10.1017/s0954102001000463 2024-02-08T08:43:45Z High resolution firn core records of the oxygen isotope ratio (δ 18 O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the firn cores was established using a co-located Automatic Weather Station (AWS) equipped with a snow accumulation sensor, allowing dating of individual precipitation events in the firn core record. Variations in the δ 18 O and trace chemical records were compared with meteorological conditions at the mesoscale and the synoptic-scale. Particular focus was given to an abrupt change in sea salt concentrations and δ 18 O within a depth range that appears from AWS accumulation data to have been deposited over a 24 hour period. The abrupt change in the firn core record was found to be consistent with an abrupt change in meteorological conditions. Direct comparisons between high resolution firn core records and meteorological conditions will greatly facilitate the interpretation of signals preserved in deep ice cores. Article in Journal/Newspaper Antarc* Antarctic Science Antarctica East Antarctica Cambridge University Press East Antarctica Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Antarctic Science 13 3 329 337 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography McMorrow, Alison J. Curran, Mark A.J. Ommen, Tas D. Van Morgan, Vin Pook, Michael J. Allison, Ian Intercomparison of firn core and meteorological data |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
High resolution firn core records of the oxygen isotope ratio (δ 18 O) and trace chemical species were extracted from a high accumulation site on Law Dome, East Antarctica. Inter-core comparisons were conducted and regional events identified in cores 5 km apart. High resolution dating of one of the firn cores was established using a co-located Automatic Weather Station (AWS) equipped with a snow accumulation sensor, allowing dating of individual precipitation events in the firn core record. Variations in the δ 18 O and trace chemical records were compared with meteorological conditions at the mesoscale and the synoptic-scale. Particular focus was given to an abrupt change in sea salt concentrations and δ 18 O within a depth range that appears from AWS accumulation data to have been deposited over a 24 hour period. The abrupt change in the firn core record was found to be consistent with an abrupt change in meteorological conditions. Direct comparisons between high resolution firn core records and meteorological conditions will greatly facilitate the interpretation of signals preserved in deep ice cores. |
format |
Article in Journal/Newspaper |
author |
McMorrow, Alison J. Curran, Mark A.J. Ommen, Tas D. Van Morgan, Vin Pook, Michael J. Allison, Ian |
author_facet |
McMorrow, Alison J. Curran, Mark A.J. Ommen, Tas D. Van Morgan, Vin Pook, Michael J. Allison, Ian |
author_sort |
McMorrow, Alison J. |
title |
Intercomparison of firn core and meteorological data |
title_short |
Intercomparison of firn core and meteorological data |
title_full |
Intercomparison of firn core and meteorological data |
title_fullStr |
Intercomparison of firn core and meteorological data |
title_full_unstemmed |
Intercomparison of firn core and meteorological data |
title_sort |
intercomparison of firn core and meteorological data |
publisher |
Cambridge University Press (CUP) |
publishDate |
2001 |
url |
http://dx.doi.org/10.1017/s0954102001000463 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102001000463 |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) |
geographic |
East Antarctica Law Dome |
geographic_facet |
East Antarctica Law Dome |
genre |
Antarc* Antarctic Science Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Science Antarctica East Antarctica |
op_source |
Antarctic Science volume 13, issue 3, page 329-337 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0954102001000463 |
container_title |
Antarctic Science |
container_volume |
13 |
container_issue |
3 |
container_start_page |
329 |
op_container_end_page |
337 |
_version_ |
1792506848424755200 |