Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia
Solving the sea–level equation for a Maxwell Earth, we analyze the sensitivity of Holocene sea–level records in SE Tunisia to the time–history of remote ice sheets. Assuming that mantle viscosity increases moderately with depth, we find that in this region the sea–level variations driven by the Nort...
Published in: | Pure and Applied Geophysics |
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Online Access: | http://hdl.handle.net/11585/771903 https://doi.org/10.1007/s00024-009-0488-z |
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ftunibolognairis:oai:cris.unibo.it:11585/771903 2024-09-15T17:47:34+00:00 Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia STOCCHI P COLLEONI F SPADA G STOCCHI P COLLEONI F SPADA G 2009 STAMPA http://hdl.handle.net/11585/771903 https://doi.org/10.1007/s00024-009-0488-z eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000269118200009 volume:166 (8-9) firstpage:1319 lastpage:1341 numberofpages:23 journal:PURE AND APPLIED GEOPHYSICS http://hdl.handle.net/11585/771903 doi:10.1007/s00024-009-0488-z info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-69249222626 NN info:eu-repo/semantics/article 2009 ftunibolognairis https://doi.org/10.1007/s00024-009-0488-z 2024-07-08T14:06:47Z Solving the sea–level equation for a Maxwell Earth, we analyze the sensitivity of Holocene sea–level records in SE Tunisia to the time–history of remote ice sheets. Assuming that mantle viscosity increases moderately with depth, we find that in this region the sea–level variations driven by the Northern Hemisphere ice sheets cancel, so that the late–Holocene sea–level high–stand suggested by the geological record merely reflects the melting history of Antarctica. New insight into the history of this ice sheet is obtained analyzing the information contained in a revised set of relative sea–level observations for sites across the Mediterranean covering the last 8 kyrs. From a trial–and–error misfit analysis, it holds true that in this region the match between model predictions and observations improves when the volume of water released from Antarctica is well below the value imposed by the ICE3G chronology and when a sudden meltwater pulse is allowed between 8 and 7 kyrs before present, corresponding to the epoch of the catastrophic rise event known as CRE3. Article in Journal/Newspaper Antarc* Antarctica Ice Sheet IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Pure and Applied Geophysics 166 8-9 1319 1341 |
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IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
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ftunibolognairis |
language |
English |
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NN STOCCHI P COLLEONI F SPADA G Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
topic_facet |
NN |
description |
Solving the sea–level equation for a Maxwell Earth, we analyze the sensitivity of Holocene sea–level records in SE Tunisia to the time–history of remote ice sheets. Assuming that mantle viscosity increases moderately with depth, we find that in this region the sea–level variations driven by the Northern Hemisphere ice sheets cancel, so that the late–Holocene sea–level high–stand suggested by the geological record merely reflects the melting history of Antarctica. New insight into the history of this ice sheet is obtained analyzing the information contained in a revised set of relative sea–level observations for sites across the Mediterranean covering the last 8 kyrs. From a trial–and–error misfit analysis, it holds true that in this region the match between model predictions and observations improves when the volume of water released from Antarctica is well below the value imposed by the ICE3G chronology and when a sudden meltwater pulse is allowed between 8 and 7 kyrs before present, corresponding to the epoch of the catastrophic rise event known as CRE3. |
author2 |
STOCCHI P COLLEONI F SPADA G |
format |
Article in Journal/Newspaper |
author |
STOCCHI P COLLEONI F SPADA G |
author_facet |
STOCCHI P COLLEONI F SPADA G |
author_sort |
STOCCHI P |
title |
Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
title_short |
Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
title_full |
Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
title_fullStr |
Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
title_full_unstemmed |
Bounds on the time-history and Holocene mass budget of Antarctica from sea-level records in SE Tunisia |
title_sort |
bounds on the time-history and holocene mass budget of antarctica from sea-level records in se tunisia |
publishDate |
2009 |
url |
http://hdl.handle.net/11585/771903 https://doi.org/10.1007/s00024-009-0488-z |
genre |
Antarc* Antarctica Ice Sheet |
genre_facet |
Antarc* Antarctica Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000269118200009 volume:166 (8-9) firstpage:1319 lastpage:1341 numberofpages:23 journal:PURE AND APPLIED GEOPHYSICS http://hdl.handle.net/11585/771903 doi:10.1007/s00024-009-0488-z info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-69249222626 |
op_doi |
https://doi.org/10.1007/s00024-009-0488-z |
container_title |
Pure and Applied Geophysics |
container_volume |
166 |
container_issue |
8-9 |
container_start_page |
1319 |
op_container_end_page |
1341 |
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1810496993641889792 |