Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake
Based on the data of the repeated gravity observation network in Chinese mainland since 1998, we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7. 3 earthquake. The result shows some mid-to-long term (two to ten years) changes during the earthquake’s preparation. No...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2012-02-01
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| Series: | Geodesy and Geodynamics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S167498471530104X |
| _version_ | 1818347743545917440 |
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| author | Shen Chongyang Li Hui Sun Shaoan Yang Guangliang Xuan Songbai Tan Hongbo Liu Shaoming |
| author_facet | Shen Chongyang Li Hui Sun Shaoan Yang Guangliang Xuan Songbai Tan Hongbo Liu Shaoming |
| author_sort | Shen Chongyang |
| collection | DOAJ |
| description | Based on the data of the repeated gravity observation network in Chinese mainland since 1998, we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7. 3 earthquake. The result shows some mid-to-long term (two to ten years) changes during the earthquake’s preparation. Notable features are a gravity increase lasting several years and a relatively large-scaled gradient zone of gravity change, the former indicating a continuous energy accumulation and the latter a possible location of seismic rupture. These gravity changes showed a trend of increase-accelerated increase-decelerated increase, similar to that of the Tangshan Ms7. 8 earthquake in 1976. The maximum accumulated gravity change related to the earthquake reached 200×10 −8 ms−2. |
| first_indexed | 2024-12-13T17:39:01Z |
| format | Article |
| id | doaj.art-ad12b0396975452e82184d507f2891ee |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-13T17:39:01Z |
| publishDate | 2012-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-ad12b0396975452e82184d507f2891ee2022-12-21T23:36:50ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472012-02-0131192610.3724/SP.J.1246.2012.00019Temporal gravity changes before the 2008 Yutian Ms7.3 earthquakeShen Chongyang0Li Hui1Sun Shaoan2Yang Guangliang3Xuan Songbai4Tan Hongbo5Liu Shaoming6Institute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaInstitute of Seismology, China Earthquake Administration, Wuhan 430071, ChinaBased on the data of the repeated gravity observation network in Chinese mainland since 1998, we analyzed the temporal changes of regional gravity field before the 2008 Yutian Ms7. 3 earthquake. The result shows some mid-to-long term (two to ten years) changes during the earthquake’s preparation. Notable features are a gravity increase lasting several years and a relatively large-scaled gradient zone of gravity change, the former indicating a continuous energy accumulation and the latter a possible location of seismic rupture. These gravity changes showed a trend of increase-accelerated increase-decelerated increase, similar to that of the Tangshan Ms7. 8 earthquake in 1976. The maximum accumulated gravity change related to the earthquake reached 200×10 −8 ms−2.http://www.sciencedirect.com/science/article/pii/S167498471530104XYutian earthquakegravimetrydynamic changeseismogeny |
| spellingShingle | Shen Chongyang Li Hui Sun Shaoan Yang Guangliang Xuan Songbai Tan Hongbo Liu Shaoming Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake Geodesy and Geodynamics Yutian earthquake gravimetry dynamic change seismogeny |
| title | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake |
| title_full | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake |
| title_fullStr | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake |
| title_full_unstemmed | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake |
| title_short | Temporal gravity changes before the 2008 Yutian Ms7.3 earthquake |
| title_sort | temporal gravity changes before the 2008 yutian ms7 3 earthquake |
| topic | Yutian earthquake gravimetry dynamic change seismogeny |
| url | http://www.sciencedirect.com/science/article/pii/S167498471530104X |
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