Geometric controls on cascading rupture of the 2023 Kahramanmaraş earthquake doublet
How fault geometry controls the rupture propagation and segmentation of a strike-slip event is an open question. Deciphering the relationship between the geometric fault complexity and seismic kinematics is essential for both understanding the seismic hazard posed by a particular fault and gaining i...
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| Veröffentlicht in: | Nature geoscience 2023-11, Vol.16 (11), p.1054-1060 |
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| creator | Zhang, Yijun Tang, Xiongwei Liu, Dechuan Taymaz, Tuncay Eken, Tuna Guo, Rumeng Zheng, Yong Wang, Jingqi Sun, Heping |
| description | How fault geometry controls the rupture propagation and segmentation of a strike-slip event is an open question. Deciphering the relationship between the geometric fault complexity and seismic kinematics is essential for both understanding the seismic hazard posed by a particular fault and gaining insights into the fundamental mechanics of earthquake rupture. Here we integrate the finite-fault inversion of synthetic aperture radar observations and back projection of high-frequency teleseismic array waveforms to investigate the rupture geometry of the 2023
M
w
7.8 and
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7.6 Kahramanmaraş (southeastern Turkey) earthquake doublet and its impact on the kinematics and slip distribution. We find that large slip asperities are separated by fault bends, whereas intense high-frequency (~1 Hz) sources occur near the branching junctions, suggesting that geometric barriers could decelerate rupture propagation and enhance high-frequency wave radiations. In addition, supershear rupture propagating along the relatively high-velocity material is prone to occur on geometrically simple and smooth faults with relatively few aftershocks. These kinematic characteristics highlight that the geometric complexity of the fault system may be a key factor in the irregular cascading rupture process.
Analysis of remote-sensing and seismological observations from the 2023 Kahramanmaraş earthquake doublet reveals how fault geometry can control fault slip distribution and rupture kinematics, including the occurrence of supershear rupture. |
| doi_str_mv | 10.1038/s41561-023-01283-3 |
| format | Article |
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M
w
7.8 and
M
w
7.6 Kahramanmaraş (southeastern Turkey) earthquake doublet and its impact on the kinematics and slip distribution. We find that large slip asperities are separated by fault bends, whereas intense high-frequency (~1 Hz) sources occur near the branching junctions, suggesting that geometric barriers could decelerate rupture propagation and enhance high-frequency wave radiations. In addition, supershear rupture propagating along the relatively high-velocity material is prone to occur on geometrically simple and smooth faults with relatively few aftershocks. These kinematic characteristics highlight that the geometric complexity of the fault system may be a key factor in the irregular cascading rupture process.
Analysis of remote-sensing and seismological observations from the 2023 Kahramanmaraş earthquake doublet reveals how fault geometry can control fault slip distribution and rupture kinematics, including the occurrence of supershear rupture.</description><identifier>ISSN: 1752-0894</identifier><identifier>EISSN: 1752-0908</identifier><identifier>DOI: 10.1038/s41561-023-01283-3</identifier><language>eng</language><publisher>London: Nature Publishing Group UK</publisher><subject>704/2151/508 ; 704/4111 ; Aftershocks ; Displaced persons ; Earth and Environmental Science ; Earth science ; Earth Sciences ; Earth System Sciences ; Earthquakes ; Fault lines ; Geochemistry ; Geology ; Geometry ; Geophysics/Geodesy ; Kinematics ; Propagation ; Seismic activity</subject><ispartof>Nature geoscience, 2023-11, Vol.16 (11), p.1054-1060</ispartof><rights>The Author(s), under exclusive licence to Springer Nature Limited 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a342t-e6bb786f14383e626fde7e26ee0cb2f4710934b886581ff49ba63a7ec3e4aaab3</citedby><cites>FETCH-LOGICAL-a342t-e6bb786f14383e626fde7e26ee0cb2f4710934b886581ff49ba63a7ec3e4aaab3</cites><orcidid>0000-0003-0605-3720 ; 0000-0001-7980-9715 ; 0000-0002-7324-5936 ; 0000-0001-6157-8584 ; 0000-0001-6807-9622</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1038/s41561-023-01283-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1038/s41561-023-01283-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Zhang, Yijun</creatorcontrib><creatorcontrib>Tang, Xiongwei</creatorcontrib><creatorcontrib>Liu, Dechuan</creatorcontrib><creatorcontrib>Taymaz, Tuncay</creatorcontrib><creatorcontrib>Eken, Tuna</creatorcontrib><creatorcontrib>Guo, Rumeng</creatorcontrib><creatorcontrib>Zheng, Yong</creatorcontrib><creatorcontrib>Wang, Jingqi</creatorcontrib><creatorcontrib>Sun, Heping</creatorcontrib><title>Geometric controls on cascading rupture of the 2023 Kahramanmaraş earthquake doublet</title><title>Nature geoscience</title><addtitle>Nat. Geosci</addtitle><description>How fault geometry controls the rupture propagation and segmentation of a strike-slip event is an open question. Deciphering the relationship between the geometric fault complexity and seismic kinematics is essential for both understanding the seismic hazard posed by a particular fault and gaining insights into the fundamental mechanics of earthquake rupture. Here we integrate the finite-fault inversion of synthetic aperture radar observations and back projection of high-frequency teleseismic array waveforms to investigate the rupture geometry of the 2023
M
w
7.8 and
M
w
7.6 Kahramanmaraş (southeastern Turkey) earthquake doublet and its impact on the kinematics and slip distribution. We find that large slip asperities are separated by fault bends, whereas intense high-frequency (~1 Hz) sources occur near the branching junctions, suggesting that geometric barriers could decelerate rupture propagation and enhance high-frequency wave radiations. In addition, supershear rupture propagating along the relatively high-velocity material is prone to occur on geometrically simple and smooth faults with relatively few aftershocks. These kinematic characteristics highlight that the geometric complexity of the fault system may be a key factor in the irregular cascading rupture process.
Analysis of remote-sensing and seismological observations from the 2023 Kahramanmaraş earthquake doublet reveals how fault geometry can control fault slip distribution and rupture kinematics, including the occurrence of supershear rupture.</description><subject>704/2151/508</subject><subject>704/4111</subject><subject>Aftershocks</subject><subject>Displaced persons</subject><subject>Earth and Environmental Science</subject><subject>Earth science</subject><subject>Earth Sciences</subject><subject>Earth System Sciences</subject><subject>Earthquakes</subject><subject>Fault lines</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Geometry</subject><subject>Geophysics/Geodesy</subject><subject>Kinematics</subject><subject>Propagation</subject><subject>Seismic activity</subject><issn>1752-0894</issn><issn>1752-0908</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>BENPR</sourceid><recordid>eNp9kD1OAzEQhS0EEiFwASpL1Av-W9tboggCIhINqa3ZzWx-SNaJ7S04DafhXhgWREc1U7zvvZlHyCVn15xJexMVLzUvmJAF48LKQh6RETelKFjF7PHvbit1Ss5i3DCmmTLliMyn6HeYwrqhje9S8NtIfUcbiA0s1t2Shn6f-oDUtzStkIocQZ9gFWAH3Q4CfLxThJBWhx5ekS58X28xnZOTFrYRL37mmMzv714mD8Xsefo4uZ0VIJVIBeq6Nla3XEkrUQvdLtCg0IisqUWrDGeVVLW1urS8bVVVg5ZgsJGoAKCWY3I1-O6DP_QYk9v4PnQ50olMmdJwa7JKDKom-BgDtm4f1vn2N8eZ-6rPDfW5_Jv7rs_JDMkBilncLTH8Wf9DfQJOKnOh</recordid><startdate>20231101</startdate><enddate>20231101</enddate><creator>Zhang, Yijun</creator><creator>Tang, Xiongwei</creator><creator>Liu, Dechuan</creator><creator>Taymaz, Tuncay</creator><creator>Eken, Tuna</creator><creator>Guo, Rumeng</creator><creator>Zheng, Yong</creator><creator>Wang, Jingqi</creator><creator>Sun, Heping</creator><general>Nature Publishing Group UK</general><general>Nature Publishing Group</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SN</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>8FE</scope><scope>8FH</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>L.G</scope><scope>LK8</scope><scope>M7P</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><orcidid>https://orcid.org/0000-0003-0605-3720</orcidid><orcidid>https://orcid.org/0000-0001-7980-9715</orcidid><orcidid>https://orcid.org/0000-0002-7324-5936</orcidid><orcidid>https://orcid.org/0000-0001-6157-8584</orcidid><orcidid>https://orcid.org/0000-0001-6807-9622</orcidid></search><sort><creationdate>20231101</creationdate><title>Geometric controls on cascading rupture of the 2023 Kahramanmaraş earthquake doublet</title><author>Zhang, Yijun ; 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Geosci</stitle><date>2023-11-01</date><risdate>2023</risdate><volume>16</volume><issue>11</issue><spage>1054</spage><epage>1060</epage><pages>1054-1060</pages><issn>1752-0894</issn><eissn>1752-0908</eissn><abstract>How fault geometry controls the rupture propagation and segmentation of a strike-slip event is an open question. Deciphering the relationship between the geometric fault complexity and seismic kinematics is essential for both understanding the seismic hazard posed by a particular fault and gaining insights into the fundamental mechanics of earthquake rupture. Here we integrate the finite-fault inversion of synthetic aperture radar observations and back projection of high-frequency teleseismic array waveforms to investigate the rupture geometry of the 2023
M
w
7.8 and
M
w
7.6 Kahramanmaraş (southeastern Turkey) earthquake doublet and its impact on the kinematics and slip distribution. We find that large slip asperities are separated by fault bends, whereas intense high-frequency (~1 Hz) sources occur near the branching junctions, suggesting that geometric barriers could decelerate rupture propagation and enhance high-frequency wave radiations. In addition, supershear rupture propagating along the relatively high-velocity material is prone to occur on geometrically simple and smooth faults with relatively few aftershocks. These kinematic characteristics highlight that the geometric complexity of the fault system may be a key factor in the irregular cascading rupture process.
Analysis of remote-sensing and seismological observations from the 2023 Kahramanmaraş earthquake doublet reveals how fault geometry can control fault slip distribution and rupture kinematics, including the occurrence of supershear rupture.</abstract><cop>London</cop><pub>Nature Publishing Group UK</pub><doi>10.1038/s41561-023-01283-3</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0003-0605-3720</orcidid><orcidid>https://orcid.org/0000-0001-7980-9715</orcidid><orcidid>https://orcid.org/0000-0002-7324-5936</orcidid><orcidid>https://orcid.org/0000-0001-6157-8584</orcidid><orcidid>https://orcid.org/0000-0001-6807-9622</orcidid></addata></record> |
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| subjects | 704/2151/508 704/4111 Aftershocks Displaced persons Earth and Environmental Science Earth science Earth Sciences Earth System Sciences Earthquakes Fault lines Geochemistry Geology Geometry Geophysics/Geodesy Kinematics Propagation Seismic activity |
| title | Geometric controls on cascading rupture of the 2023 Kahramanmaraş earthquake doublet |
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