Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region
Vertical movements in the Po plain (northern Italy) are controlled by natural and anthropogenic effects. Since Italy is located in the far–field of the former late Pleistocene ice sheets, isostatic deformations are primarily driven by melt water loading and represent a major component of long–term n...
Published in: | Pure and Applied Geophysics |
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Online Access: | http://hdl.handle.net/11576/2302457 https://doi.org/10.1007/s00024-004-0498-9 http://link.springer.com/article/10.1007/s00024-004-0498-9 |
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ftunivurbino:oai:ora.uniurb.it:11576/2302457 2024-04-14T08:13:12+00:00 Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region SPADA, GIORGIO STOCCHI P COLLEONI F. Spada, Giorgio Stocchi, P Colleoni, F. 2009 STAMPA http://hdl.handle.net/11576/2302457 https://doi.org/10.1007/s00024-004-0498-9 http://link.springer.com/article/10.1007/s00024-004-0498-9 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000269118200008 volume:166 issue:8 firstpage:1303 lastpage:1318 numberofpages:16 journal:PURE AND APPLIED GEOPHYSICS http://hdl.handle.net/11576/2302457 doi:10.1007/s00024-004-0498-9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-69249215184 http://link.springer.com/article/10.1007/s00024-004-0498-9 N/A info:eu-repo/semantics/article 2009 ftunivurbino https://doi.org/10.1007/s00024-004-0498-9 2024-03-21T17:08:45Z Vertical movements in the Po plain (northern Italy) are controlled by natural and anthropogenic effects. Since Italy is located in the far–field of the former late Pleistocene ice sheets, isostatic deformations are primarily driven by melt water loading and represent a major component of long–term natural movements across the entire Mediterranean. In addition to far–field sources, here we consider the isostatic effects of melting of the nearby Wu ̈rm Alpine ice–sheet, suggesting that it is possible to put bounds on its maximum thickness, extent and chronology by Holocene relative sea level observations from the northern Adriatic. Using various plausible ice models, and adopting a viscosity profile that matches Holocene relative sea level observations in the Mediterranean, we find that melting of the Alpine ice sheet is always responsible for upward movements in the Po plain, currently at rates of * 0.5 mm/yr. When both far– and near–field sources are considered, the rate of sea level change in the Venetian Lagoon for the most reasonable mantle rheology and melting chronology is negative, i.e., opposite to that attributed to human activity and recent climatic variations. However, its amplitude (fractions of mm/yr) is small compared to the secular signal observed by tide gauges (*2 mm/yr), which makes glacial isostasy a second–order mechanism of sea level variation in this region. Article in Journal/Newspaper Ice Sheet Università degli Studi di Urbino: CINECA IRIS Pure and Applied Geophysics 166 8-9 1303 1318 |
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Open Polar |
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Università degli Studi di Urbino: CINECA IRIS |
op_collection_id |
ftunivurbino |
language |
English |
topic |
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spellingShingle |
N/A SPADA, GIORGIO STOCCHI P COLLEONI F. Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
topic_facet |
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description |
Vertical movements in the Po plain (northern Italy) are controlled by natural and anthropogenic effects. Since Italy is located in the far–field of the former late Pleistocene ice sheets, isostatic deformations are primarily driven by melt water loading and represent a major component of long–term natural movements across the entire Mediterranean. In addition to far–field sources, here we consider the isostatic effects of melting of the nearby Wu ̈rm Alpine ice–sheet, suggesting that it is possible to put bounds on its maximum thickness, extent and chronology by Holocene relative sea level observations from the northern Adriatic. Using various plausible ice models, and adopting a viscosity profile that matches Holocene relative sea level observations in the Mediterranean, we find that melting of the Alpine ice sheet is always responsible for upward movements in the Po plain, currently at rates of * 0.5 mm/yr. When both far– and near–field sources are considered, the rate of sea level change in the Venetian Lagoon for the most reasonable mantle rheology and melting chronology is negative, i.e., opposite to that attributed to human activity and recent climatic variations. However, its amplitude (fractions of mm/yr) is small compared to the secular signal observed by tide gauges (*2 mm/yr), which makes glacial isostasy a second–order mechanism of sea level variation in this region. |
author2 |
Spada, Giorgio Stocchi, P Colleoni, F. |
format |
Article in Journal/Newspaper |
author |
SPADA, GIORGIO STOCCHI P COLLEONI F. |
author_facet |
SPADA, GIORGIO STOCCHI P COLLEONI F. |
author_sort |
SPADA, GIORGIO |
title |
Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
title_short |
Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
title_full |
Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
title_fullStr |
Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
title_full_unstemmed |
Glacio-isostatic adjustment in the Po plain and in the northern Adriatic region |
title_sort |
glacio-isostatic adjustment in the po plain and in the northern adriatic region |
publishDate |
2009 |
url |
http://hdl.handle.net/11576/2302457 https://doi.org/10.1007/s00024-004-0498-9 http://link.springer.com/article/10.1007/s00024-004-0498-9 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000269118200008 volume:166 issue:8 firstpage:1303 lastpage:1318 numberofpages:16 journal:PURE AND APPLIED GEOPHYSICS http://hdl.handle.net/11576/2302457 doi:10.1007/s00024-004-0498-9 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-69249215184 http://link.springer.com/article/10.1007/s00024-004-0498-9 |
op_doi |
https://doi.org/10.1007/s00024-004-0498-9 |
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Pure and Applied Geophysics |
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166 |
container_issue |
8-9 |
container_start_page |
1303 |
op_container_end_page |
1318 |
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