Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica
An earthquake swarm affected the Bransfield Strait, Antarctica, a unique rift basin in transition from intra-arc rifting to ocean spreading. The swarm, counting ~85,000 volcanotectonic earthquakes since August 2020, is located close to the Orca submarine volcano, previously considered inactive. Simu...
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ftdlr:oai:elib.dlr.de:186138 2023-05-15T13:51:36+02:00 Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica Cesca, Simone Sugan, Monica Rudzinski, Łukasz Vajedian, Sanaz Niemz, Peter Plank, Simon Manuel Petersen, Gesa Deng, Zhiguo Rivalta, Eleonora Vuan, Alessandro Plasencia Linares, Milton Percy Heimann, Sebastian Dahm, Torsten 2022-04-11 application/pdf https://elib.dlr.de/186138/ https://elib.dlr.de/186138/1/Cesca_etal_2022_s43247-022-00418-5.pdf https://www.nature.com/articles/s43247-022-00418-5 en eng Springer Nature https://elib.dlr.de/186138/1/Cesca_etal_2022_s43247-022-00418-5.pdf Cesca, Simone und Sugan, Monica und Rudzinski, Łukasz und Vajedian, Sanaz und Niemz, Peter und Plank, Simon Manuel und Petersen, Gesa und Deng, Zhiguo und Rivalta, Eleonora und Vuan, Alessandro und Plasencia Linares, Milton Percy und Heimann, Sebastian und Dahm, Torsten (2022) Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica. Communications Earth & Environment, 3 (89), Seiten 1-11. Springer Nature. doi:10.1038/s43247-022-00418-5 <https://doi.org/10.1038/s43247-022-00418-5>. ISSN 2662-4435. cc_by CC-BY Georisiken und zivile Sicherheit Zeitschriftenbeitrag PeerReviewed 2022 ftdlr 2022-06-12T23:13:00Z An earthquake swarm affected the Bransfield Strait, Antarctica, a unique rift basin in transition from intra-arc rifting to ocean spreading. The swarm, counting ~85,000 volcanotectonic earthquakes since August 2020, is located close to the Orca submarine volcano, previously considered inactive. Simultaneously, geodetic data reported up to ~11 cm northwestward displacement over King George Island. We use a broad variety of geophysical data and methods to reveal the complex migration of seismicity, accompanying the intrusion of 0.26-0.56 km³ of magma. Strike-slip earthquakes mark the intrusion at depth, while shallower normal faulting the ~20 km long lateral growth of a dike. Seismicity abruptly decreased after a Mw 6.0 earthquake, suggesting the magmatic dike lost pressure with the slipping of a large fault. A seafloor eruption is likely, but not confirmed by sea surface temperature anomalies. The unrest documents episodic magmatic intrusion in the Bransfield Strait, providing unique insights into active continental rifting. Other Non-Article Part of Journal/Newspaper Antarc* Antarctica Bransfield Strait King George Island Orca German Aerospace Center: elib - DLR electronic library Bransfield Strait King George Island |
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Open Polar |
collection |
German Aerospace Center: elib - DLR electronic library |
op_collection_id |
ftdlr |
language |
English |
topic |
Georisiken und zivile Sicherheit |
spellingShingle |
Georisiken und zivile Sicherheit Cesca, Simone Sugan, Monica Rudzinski, Łukasz Vajedian, Sanaz Niemz, Peter Plank, Simon Manuel Petersen, Gesa Deng, Zhiguo Rivalta, Eleonora Vuan, Alessandro Plasencia Linares, Milton Percy Heimann, Sebastian Dahm, Torsten Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
topic_facet |
Georisiken und zivile Sicherheit |
description |
An earthquake swarm affected the Bransfield Strait, Antarctica, a unique rift basin in transition from intra-arc rifting to ocean spreading. The swarm, counting ~85,000 volcanotectonic earthquakes since August 2020, is located close to the Orca submarine volcano, previously considered inactive. Simultaneously, geodetic data reported up to ~11 cm northwestward displacement over King George Island. We use a broad variety of geophysical data and methods to reveal the complex migration of seismicity, accompanying the intrusion of 0.26-0.56 km³ of magma. Strike-slip earthquakes mark the intrusion at depth, while shallower normal faulting the ~20 km long lateral growth of a dike. Seismicity abruptly decreased after a Mw 6.0 earthquake, suggesting the magmatic dike lost pressure with the slipping of a large fault. A seafloor eruption is likely, but not confirmed by sea surface temperature anomalies. The unrest documents episodic magmatic intrusion in the Bransfield Strait, providing unique insights into active continental rifting. |
format |
Other Non-Article Part of Journal/Newspaper |
author |
Cesca, Simone Sugan, Monica Rudzinski, Łukasz Vajedian, Sanaz Niemz, Peter Plank, Simon Manuel Petersen, Gesa Deng, Zhiguo Rivalta, Eleonora Vuan, Alessandro Plasencia Linares, Milton Percy Heimann, Sebastian Dahm, Torsten |
author_facet |
Cesca, Simone Sugan, Monica Rudzinski, Łukasz Vajedian, Sanaz Niemz, Peter Plank, Simon Manuel Petersen, Gesa Deng, Zhiguo Rivalta, Eleonora Vuan, Alessandro Plasencia Linares, Milton Percy Heimann, Sebastian Dahm, Torsten |
author_sort |
Cesca, Simone |
title |
Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
title_short |
Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
title_full |
Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
title_fullStr |
Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
title_full_unstemmed |
Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica |
title_sort |
massive earthquake swarm driven by magmatic intrusion at the bransfield strait, antarctica |
publisher |
Springer Nature |
publishDate |
2022 |
url |
https://elib.dlr.de/186138/ https://elib.dlr.de/186138/1/Cesca_etal_2022_s43247-022-00418-5.pdf https://www.nature.com/articles/s43247-022-00418-5 |
geographic |
Bransfield Strait King George Island |
geographic_facet |
Bransfield Strait King George Island |
genre |
Antarc* Antarctica Bransfield Strait King George Island Orca |
genre_facet |
Antarc* Antarctica Bransfield Strait King George Island Orca |
op_relation |
https://elib.dlr.de/186138/1/Cesca_etal_2022_s43247-022-00418-5.pdf Cesca, Simone und Sugan, Monica und Rudzinski, Łukasz und Vajedian, Sanaz und Niemz, Peter und Plank, Simon Manuel und Petersen, Gesa und Deng, Zhiguo und Rivalta, Eleonora und Vuan, Alessandro und Plasencia Linares, Milton Percy und Heimann, Sebastian und Dahm, Torsten (2022) Massive earthquake swarm driven by magmatic intrusion at the Bransfield Strait, Antarctica. Communications Earth & Environment, 3 (89), Seiten 1-11. Springer Nature. doi:10.1038/s43247-022-00418-5 <https://doi.org/10.1038/s43247-022-00418-5>. ISSN 2662-4435. |
op_rights |
cc_by |
op_rightsnorm |
CC-BY |
_version_ |
1766255557297045504 |