Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka
Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA Dome C (E...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , , , , , , , , , |
Other Authors: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2016
|
Subjects: | |
Online Access: | http://hdl.handle.net/10278/3684304 https://doi.org/10.1017/jog.2016.85 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues |
id |
ftuniveneziairis:oai:iris.unive.it:10278/3684304 |
---|---|
record_format |
openpolar |
spelling |
ftuniveneziairis:oai:iris.unive.it:10278/3684304 2024-04-14T08:03:20+00:00 Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Uemura, R. Wolff, E. W. STENNI, Barbara Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Stenni, Barbara Uemura, R. Wolff, E. W. 2016 http://hdl.handle.net/10278/3684304 https://doi.org/10.1017/jog.2016.85 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000389173500005 volume:62 issue:236 firstpage:1037 lastpage:1048 numberofpages:12 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/10278/3684304 doi:10.1017/jog.2016.85 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84995469356 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues info:eu-repo/semantics/openAccess ice core surface mass balance vertical thinning volcanic synchronization Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/article 2016 ftuniveneziairis https://doi.org/10.1017/jog.2016.85 2024-03-21T18:04:51Z Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA Dome C (EDC) and Dome Fuji (DF) East Antarctica ice core sites, based on a precise volcanic synchronization of the two ice cores and on corrections for the vertical thinning of layers. During the past 216 000 a, this SMB ratio, denoted SMBEDC/SMBDF, varied between 0.7 and 1.1, being small during cold periods and large during warm periods. Our results therefore reveal larger amplitudes of changes in SMB at EDC compared with DF, consistent with previous results showing larger amplitudes of changes in water stable isotopes and estimated surface temperature at EDC compared with DF. Within the last glacial inception (Marine Isotope Stages, MIS-5c and MIS-5d), the SMB ratio deviates by up to 0.2 from what is expected based on differences in water stable isotope records. Moreover, the SMB ratio is constant throughout the late parts of the current and last interglacial periods, despite contrasting isotopic trends. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Antarctic East Antarctica Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Journal of Glaciology 62 236 1037 1048 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
ice core surface mass balance vertical thinning volcanic synchronization Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
ice core surface mass balance vertical thinning volcanic synchronization Settore GEO/08 - Geochimica e Vulcanologia Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Uemura, R. Wolff, E. W. STENNI, Barbara Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
topic_facet |
ice core surface mass balance vertical thinning volcanic synchronization Settore GEO/08 - Geochimica e Vulcanologia |
description |
Documenting past changes in the East Antarctic surface mass balance is important to improve ice core chronologies and to constrain the ice-sheet contribution to global mean sea-level change. Here we reconstruct past changes in the ratio of surface mass balance (SMB ratio) between the EPICA Dome C (EDC) and Dome Fuji (DF) East Antarctica ice core sites, based on a precise volcanic synchronization of the two ice cores and on corrections for the vertical thinning of layers. During the past 216 000 a, this SMB ratio, denoted SMBEDC/SMBDF, varied between 0.7 and 1.1, being small during cold periods and large during warm periods. Our results therefore reveal larger amplitudes of changes in SMB at EDC compared with DF, consistent with previous results showing larger amplitudes of changes in water stable isotopes and estimated surface temperature at EDC compared with DF. Within the last glacial inception (Marine Isotope Stages, MIS-5c and MIS-5d), the SMB ratio deviates by up to 0.2 from what is expected based on differences in water stable isotope records. Moreover, the SMB ratio is constant throughout the late parts of the current and last interglacial periods, despite contrasting isotopic trends. |
author2 |
Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Stenni, Barbara Uemura, R. Wolff, E. W. |
format |
Article in Journal/Newspaper |
author |
Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Uemura, R. Wolff, E. W. STENNI, Barbara |
author_facet |
Parrenin, F. Fujita, S. Abe Ouchi, A. Kawamura, K. Masson Delmotte, V. Motoyama, H. Saito, F. Severi, M. Uemura, R. Wolff, E. W. STENNI, Barbara |
author_sort |
Parrenin, F. |
title |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_short |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_full |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_fullStr |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_full_unstemmed |
Climate dependent contrast in surface mass balance in East Antarctica over the past 216 ka |
title_sort |
climate dependent contrast in surface mass balance in east antarctica over the past 216 ka |
publishDate |
2016 |
url |
http://hdl.handle.net/10278/3684304 https://doi.org/10.1017/jog.2016.85 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic East Antarctica Dome Fuji |
geographic_facet |
Antarctic East Antarctica Dome Fuji |
genre |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica EPICA ice core Ice Sheet Journal of Glaciology |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000389173500005 volume:62 issue:236 firstpage:1037 lastpage:1048 numberofpages:12 journal:JOURNAL OF GLACIOLOGY http://hdl.handle.net/10278/3684304 doi:10.1017/jog.2016.85 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84995469356 https://www.cambridge.org/core/journals/journal-of-glaciology/all-issues |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1017/jog.2016.85 |
container_title |
Journal of Glaciology |
container_volume |
62 |
container_issue |
236 |
container_start_page |
1037 |
op_container_end_page |
1048 |
_version_ |
1796299588086267904 |