Lithospheric Equilibrium and Anisotropy around the 2021 Yangbi Ms 6.4 Earthquake in Yunnan, China
Using the gravity/GNSS data of 318 stations observed in 2020, this paper optimizes the Bouguer and free-air gravity anomalies around the 2021 Yangbi M s 6.4 Earthquake, inverses the litho-spheric density structure of the focal area, and obtains the distribution of isostatic additional force borne by...
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| Veröffentlicht in: | Journal of earth science (Wuhan, China) China), 2023-08, Vol.34 (4), p.1165-1175 |
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| creator | Fu, Guangyu Wang, Zhenyu Liu, Jingsong Wang, Yun |
| description | Using the gravity/GNSS data of 318 stations observed in 2020, this paper optimizes the Bouguer and free-air gravity anomalies around the 2021 Yangbi
M
s 6.4 Earthquake, inverses the litho-spheric density structure of the focal area, and obtains the distribution of isostatic additional force borne by the lithosphere. The results show that the Bouguer gravity anomaly in western Yunnan varies from -120 to -360 mGal. As a whole the anomalies are large in the north and small in the south, and the value in the source area of the 2021 Yangbi
M
s 6.4 Earthquake is about -260 mGal. Significant lateral differences indicates that the crust around the great earthquake does not belong to a solid and stable tectonic unit. The lithosphere in the source area is basically in equilibrium, indicating that the occurrence of the great event is not relative to the lithospheric equilibrium, but to the differential movement of the crust in the horizontal direction. In addition, we obtain the teleseismic SKS phases of 51 stations. As a whole, the polarization direction of fast wave in western Yunnan is approximately vertical to the maximum gradient change direction of regional Bouguer gravity anomaly that reflects the change of Moho. |
| doi_str_mv | 10.1007/s12583-022-1607-3 |
| format | Article |
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M
s 6.4 Earthquake, inverses the litho-spheric density structure of the focal area, and obtains the distribution of isostatic additional force borne by the lithosphere. The results show that the Bouguer gravity anomaly in western Yunnan varies from -120 to -360 mGal. As a whole the anomalies are large in the north and small in the south, and the value in the source area of the 2021 Yangbi
M
s 6.4 Earthquake is about -260 mGal. Significant lateral differences indicates that the crust around the great earthquake does not belong to a solid and stable tectonic unit. The lithosphere in the source area is basically in equilibrium, indicating that the occurrence of the great event is not relative to the lithospheric equilibrium, but to the differential movement of the crust in the horizontal direction. In addition, we obtain the teleseismic SKS phases of 51 stations. As a whole, the polarization direction of fast wave in western Yunnan is approximately vertical to the maximum gradient change direction of regional Bouguer gravity anomaly that reflects the change of Moho.</description><identifier>ISSN: 1674-487X</identifier><identifier>EISSN: 1867-111X</identifier><identifier>DOI: 10.1007/s12583-022-1607-3</identifier><language>eng</language><publisher>Wuhan: China University of Geosciences</publisher><subject>Anisotropy ; Biogeosciences ; Direction ; Earth and Environmental Science ; Earth Sciences ; Earthquakes ; Equilibrium ; Geochemistry ; Geology ; Geotechnical Engineering & Applied Earth Sciences ; Gravity anomalies ; Horizontal orientation ; Lithosphere ; Moho ; Satellite observation ; Seismic activity ; Tectonics</subject><ispartof>Journal of earth science (Wuhan, China), 2023-08, Vol.34 (4), p.1165-1175</ispartof><rights>China University of Geosciences (Wuhan) and Springer-Verlag GmbH Germany, Part of Springer Nature 2023</rights><rights>China University of Geosciences (Wuhan) and Springer-Verlag GmbH Germany, Part of Springer Nature 2023.</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c348t-9c3982458b1c9ed5e7946bb4d812006b9f99bacdad64581d4ddcfcd378b9e4bc3</citedby><cites>FETCH-LOGICAL-c348t-9c3982458b1c9ed5e7946bb4d812006b9f99bacdad64581d4ddcfcd378b9e4bc3</cites><orcidid>0000-0002-1528-0055 ; 0000-0002-7543-4677</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://www.wanfangdata.com.cn/images/PeriodicalImages/dqkx-e/dqkx-e.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s12583-022-1607-3$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s12583-022-1607-3$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Fu, Guangyu</creatorcontrib><creatorcontrib>Wang, Zhenyu</creatorcontrib><creatorcontrib>Liu, Jingsong</creatorcontrib><creatorcontrib>Wang, Yun</creatorcontrib><title>Lithospheric Equilibrium and Anisotropy around the 2021 Yangbi Ms 6.4 Earthquake in Yunnan, China</title><title>Journal of earth science (Wuhan, China)</title><addtitle>J. Earth Sci</addtitle><description>Using the gravity/GNSS data of 318 stations observed in 2020, this paper optimizes the Bouguer and free-air gravity anomalies around the 2021 Yangbi
M
s 6.4 Earthquake, inverses the litho-spheric density structure of the focal area, and obtains the distribution of isostatic additional force borne by the lithosphere. The results show that the Bouguer gravity anomaly in western Yunnan varies from -120 to -360 mGal. As a whole the anomalies are large in the north and small in the south, and the value in the source area of the 2021 Yangbi
M
s 6.4 Earthquake is about -260 mGal. Significant lateral differences indicates that the crust around the great earthquake does not belong to a solid and stable tectonic unit. The lithosphere in the source area is basically in equilibrium, indicating that the occurrence of the great event is not relative to the lithospheric equilibrium, but to the differential movement of the crust in the horizontal direction. In addition, we obtain the teleseismic SKS phases of 51 stations. As a whole, the polarization direction of fast wave in western Yunnan is approximately vertical to the maximum gradient change direction of regional Bouguer gravity anomaly that reflects the change of Moho.</description><subject>Anisotropy</subject><subject>Biogeosciences</subject><subject>Direction</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Earthquakes</subject><subject>Equilibrium</subject><subject>Geochemistry</subject><subject>Geology</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Gravity anomalies</subject><subject>Horizontal orientation</subject><subject>Lithosphere</subject><subject>Moho</subject><subject>Satellite observation</subject><subject>Seismic activity</subject><subject>Tectonics</subject><issn>1674-487X</issn><issn>1867-111X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLAzEUhQdRsGh_gLuACzdOzauTZFlKfUDFjYKuQl7jpI9Mm8yg_femjODKu7mXy3fuPZyiuEJwgiBkdwnhKSclxLhEFWQlOSlGiFesRAi9n-a5YrSknL2fF-OUVjAXwYwjNirU0ndNm3aNi96Axb73G6-j77dABQtmwae2i-3uAFRs-7zpGgcwxAh8qPCpPXhOoJpQsFCxa_a9WjvgA_joQ1DhFswbH9RlcVarTXLj335RvN0vXueP5fLl4Wk-W5aGUN6VwhDBMZ1yjYxwduqYoJXW1HKEIay0qIXQylhlqwwhS601tbGEcS0c1YZcFDfD3S8V6mxOrto-hvxR2v36W7rsmkAKEcvk9UDuYrvvXer-UMwpF5xgfqTQQJnYphRdLXfRb1U8SATlMXY5xC5z7PIYuyRZgwdNymz4dPHv8v-iH72eg60</recordid><startdate>20230801</startdate><enddate>20230801</enddate><creator>Fu, Guangyu</creator><creator>Wang, Zhenyu</creator><creator>Liu, Jingsong</creator><creator>Wang, Yun</creator><general>China University of Geosciences</general><general>Springer Nature B.V</general><general>Key Laboratory of Intraplate Volcanoes and Earthquakes(China University of Geosciences,Beijing),Ministry of Education,Beijing 100083,China%Institute of Earthquake Forecasting,China Earthquake Administration,Beijing 100036,China</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7TN</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>SOI</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope><orcidid>https://orcid.org/0000-0002-1528-0055</orcidid><orcidid>https://orcid.org/0000-0002-7543-4677</orcidid></search><sort><creationdate>20230801</creationdate><title>Lithospheric Equilibrium and Anisotropy around the 2021 Yangbi Ms 6.4 Earthquake in Yunnan, China</title><author>Fu, Guangyu ; Wang, Zhenyu ; Liu, Jingsong ; Wang, Yun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c348t-9c3982458b1c9ed5e7946bb4d812006b9f99bacdad64581d4ddcfcd378b9e4bc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Anisotropy</topic><topic>Biogeosciences</topic><topic>Direction</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Earthquakes</topic><topic>Equilibrium</topic><topic>Geochemistry</topic><topic>Geology</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Gravity anomalies</topic><topic>Horizontal orientation</topic><topic>Lithosphere</topic><topic>Moho</topic><topic>Satellite observation</topic><topic>Seismic activity</topic><topic>Tectonics</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fu, Guangyu</creatorcontrib><creatorcontrib>Wang, Zhenyu</creatorcontrib><creatorcontrib>Liu, Jingsong</creatorcontrib><creatorcontrib>Wang, Yun</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><collection>Wanfang Data Journals - Hong Kong</collection><collection>WANFANG Data Centre</collection><collection>Wanfang Data Journals</collection><collection>万方数据期刊 - 香港版</collection><collection>China Online Journals (COJ)</collection><collection>China Online Journals (COJ)</collection><jtitle>Journal of earth science (Wuhan, China)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fu, Guangyu</au><au>Wang, Zhenyu</au><au>Liu, Jingsong</au><au>Wang, Yun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Lithospheric Equilibrium and Anisotropy around the 2021 Yangbi Ms 6.4 Earthquake in Yunnan, China</atitle><jtitle>Journal of earth science (Wuhan, China)</jtitle><stitle>J. Earth Sci</stitle><date>2023-08-01</date><risdate>2023</risdate><volume>34</volume><issue>4</issue><spage>1165</spage><epage>1175</epage><pages>1165-1175</pages><issn>1674-487X</issn><eissn>1867-111X</eissn><abstract>Using the gravity/GNSS data of 318 stations observed in 2020, this paper optimizes the Bouguer and free-air gravity anomalies around the 2021 Yangbi
M
s 6.4 Earthquake, inverses the litho-spheric density structure of the focal area, and obtains the distribution of isostatic additional force borne by the lithosphere. The results show that the Bouguer gravity anomaly in western Yunnan varies from -120 to -360 mGal. As a whole the anomalies are large in the north and small in the south, and the value in the source area of the 2021 Yangbi
M
s 6.4 Earthquake is about -260 mGal. Significant lateral differences indicates that the crust around the great earthquake does not belong to a solid and stable tectonic unit. The lithosphere in the source area is basically in equilibrium, indicating that the occurrence of the great event is not relative to the lithospheric equilibrium, but to the differential movement of the crust in the horizontal direction. In addition, we obtain the teleseismic SKS phases of 51 stations. As a whole, the polarization direction of fast wave in western Yunnan is approximately vertical to the maximum gradient change direction of regional Bouguer gravity anomaly that reflects the change of Moho.</abstract><cop>Wuhan</cop><pub>China University of Geosciences</pub><doi>10.1007/s12583-022-1607-3</doi><tpages>11</tpages><orcidid>https://orcid.org/0000-0002-1528-0055</orcidid><orcidid>https://orcid.org/0000-0002-7543-4677</orcidid></addata></record> |
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| subjects | Anisotropy Biogeosciences Direction Earth and Environmental Science Earth Sciences Earthquakes Equilibrium Geochemistry Geology Geotechnical Engineering & Applied Earth Sciences Gravity anomalies Horizontal orientation Lithosphere Moho Satellite observation Seismic activity Tectonics |
| title | Lithospheric Equilibrium and Anisotropy around the 2021 Yangbi Ms 6.4 Earthquake in Yunnan, China |
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