Response of faults to climate-driven changes in ice and water volumes on Earth’s surface
Numerical models including one or more faults in a rheologically stratified lithosphere show that climate-induced variations in ice and water volumes on Earth’s surface considerably affect the slip evolution of both thrust and normal faults. In general, the slip rate and hence the seismicity of a fa...
Published in: | Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
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crroyalsociety:10.1098/rsta.2010.0031 2024-10-13T14:02:59+00:00 Response of faults to climate-driven changes in ice and water volumes on Earth’s surface Hampel, Andrea Hetzel, Ralf Maniatis, Georgios 2010 http://dx.doi.org/10.1098/rsta.2010.0031 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2010.0031 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2010.0031 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 368, issue 1919, page 2501-2517 ISSN 1364-503X 1471-2962 journal-article 2010 crroyalsociety https://doi.org/10.1098/rsta.2010.0031 2024-09-17T04:34:41Z Numerical models including one or more faults in a rheologically stratified lithosphere show that climate-induced variations in ice and water volumes on Earth’s surface considerably affect the slip evolution of both thrust and normal faults. In general, the slip rate and hence the seismicity of a fault decreases during loading and increases during unloading. Here, we present several case studies to show that a postglacial slip rate increase occurred on faults worldwide in regions where ice caps and lakes decayed at the end of the last glaciation. Of note is that the postglacial amplification of seismicity was not restricted to the areas beneath the large Laurentide and Fennoscandian ice sheets but also occurred in regions affected by smaller ice caps or lakes, e.g. the Basin-and-Range Province. Our results do not only have important consequences for the interpretation of palaeoseismological records from faults in these regions but also for the evaluation of the future seismicity in regions currently affected by deglaciation like Greenland and Antarctica: shrinkage of the modern ice sheets owing to global warming may ultimately lead to an increase in earthquake frequency in these regions. Article in Journal/Newspaper Antarc* Antarctica Fennoscandian Greenland The Royal Society Greenland Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 368 1919 2501 2517 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Numerical models including one or more faults in a rheologically stratified lithosphere show that climate-induced variations in ice and water volumes on Earth’s surface considerably affect the slip evolution of both thrust and normal faults. In general, the slip rate and hence the seismicity of a fault decreases during loading and increases during unloading. Here, we present several case studies to show that a postglacial slip rate increase occurred on faults worldwide in regions where ice caps and lakes decayed at the end of the last glaciation. Of note is that the postglacial amplification of seismicity was not restricted to the areas beneath the large Laurentide and Fennoscandian ice sheets but also occurred in regions affected by smaller ice caps or lakes, e.g. the Basin-and-Range Province. Our results do not only have important consequences for the interpretation of palaeoseismological records from faults in these regions but also for the evaluation of the future seismicity in regions currently affected by deglaciation like Greenland and Antarctica: shrinkage of the modern ice sheets owing to global warming may ultimately lead to an increase in earthquake frequency in these regions. |
format |
Article in Journal/Newspaper |
author |
Hampel, Andrea Hetzel, Ralf Maniatis, Georgios |
spellingShingle |
Hampel, Andrea Hetzel, Ralf Maniatis, Georgios Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
author_facet |
Hampel, Andrea Hetzel, Ralf Maniatis, Georgios |
author_sort |
Hampel, Andrea |
title |
Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
title_short |
Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
title_full |
Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
title_fullStr |
Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
title_full_unstemmed |
Response of faults to climate-driven changes in ice and water volumes on Earth’s surface |
title_sort |
response of faults to climate-driven changes in ice and water volumes on earth’s surface |
publisher |
The Royal Society |
publishDate |
2010 |
url |
http://dx.doi.org/10.1098/rsta.2010.0031 https://royalsocietypublishing.org/doi/pdf/10.1098/rsta.2010.0031 https://royalsocietypublishing.org/doi/full-xml/10.1098/rsta.2010.0031 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Fennoscandian Greenland |
genre_facet |
Antarc* Antarctica Fennoscandian Greenland |
op_source |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences volume 368, issue 1919, page 2501-2517 ISSN 1364-503X 1471-2962 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rsta.2010.0031 |
container_title |
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences |
container_volume |
368 |
container_issue |
1919 |
container_start_page |
2501 |
op_container_end_page |
2517 |
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1812819428382867456 |