Wei Chen, Wei Xiong, Bin Zhao, Yangmao Wen, Xuejun Qiao
{"title":"2022 年门源 6.7 级地震揭示了天柱地震带西段的高应力聚集现象","authors":"Wei Chen, Wei Xiong, Bin Zhao, Yangmao Wen, Xuejun Qiao","doi":"10.1007/s00024-024-03544-7","DOIUrl":null,"url":null,"abstract":"<p>The January 8th 2022 Menyuan earthquake(Mw6.7) occurred along major boundary fault zone in the north-eastern Tibetan Plateau. In this study, we derived the co-seismic deformation from pixel offset tracking (POT) and interferometric synthetic aperture radar (InSAR) by using Sentinel-1 data. The interferograms pattern shows that coseismic deformation is dominated by horizontal movements with the maximum displacement are over 0.5 m in both tracks and POT results. Then we inverted the geometry parameters of the causative fault and the slip distribution of the fault plane based on the finite dislocation model. The result shows the seismogenic fault has an average strike of 103.0<sup>◦</sup> and a northeast dip angle of 84<sup>◦</sup>. moreover, the coseismic slip is primarily concentrated on the Lenglongling fault with on main asperity of 10 × 23 km and the maximum slip of 3.25 ± 0.34 m at depth of 4 km as well as rupture the eastern of the Tuolaishan fault with a small area of 5 × 5 km at depths of 0–8 km. On the basis of the dCFS results caused by historical earthquakes in Tuolaishan fault and geodetic-derived slip rate of the Tuolaishan fault, we emphasize the potential seismic risk on western Tianzhu gap is high.</p>","PeriodicalId":21078,"journal":{"name":"pure and applied geophysics","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The 2022 Mw 6.7 Menyuan Earthquake Revealing High Stress Accumulation in the Western Section of the Tianzhu Seismic Gap\",\"authors\":\"Wei Chen, Wei Xiong, Bin Zhao, Yangmao Wen, Xuejun Qiao\",\"doi\":\"10.1007/s00024-024-03544-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The January 8th 2022 Menyuan earthquake(Mw6.7) occurred along major boundary fault zone in the north-eastern Tibetan Plateau. In this study, we derived the co-seismic deformation from pixel offset tracking (POT) and interferometric synthetic aperture radar (InSAR) by using Sentinel-1 data. The interferograms pattern shows that coseismic deformation is dominated by horizontal movements with the maximum displacement are over 0.5 m in both tracks and POT results. Then we inverted the geometry parameters of the causative fault and the slip distribution of the fault plane based on the finite dislocation model. The result shows the seismogenic fault has an average strike of 103.0<sup>◦</sup> and a northeast dip angle of 84<sup>◦</sup>. moreover, the coseismic slip is primarily concentrated on the Lenglongling fault with on main asperity of 10 × 23 km and the maximum slip of 3.25 ± 0.34 m at depth of 4 km as well as rupture the eastern of the Tuolaishan fault with a small area of 5 × 5 km at depths of 0–8 km. On the basis of the dCFS results caused by historical earthquakes in Tuolaishan fault and geodetic-derived slip rate of the Tuolaishan fault, we emphasize the potential seismic risk on western Tianzhu gap is high.</p>\",\"PeriodicalId\":21078,\"journal\":{\"name\":\"pure and applied geophysics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.9000,\"publicationDate\":\"2024-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"pure and applied geophysics\",\"FirstCategoryId\":\"89\",\"ListUrlMain\":\"https://doi.org/10.1007/s00024-024-03544-7\",\"RegionNum\":4,\"RegionCategory\":\"地球科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"GEOCHEMISTRY & GEOPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"pure and applied geophysics","FirstCategoryId":"89","ListUrlMain":"https://doi.org/10.1007/s00024-024-03544-7","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
The 2022 Mw 6.7 Menyuan Earthquake Revealing High Stress Accumulation in the Western Section of the Tianzhu Seismic Gap
The January 8th 2022 Menyuan earthquake(Mw6.7) occurred along major boundary fault zone in the north-eastern Tibetan Plateau. In this study, we derived the co-seismic deformation from pixel offset tracking (POT) and interferometric synthetic aperture radar (InSAR) by using Sentinel-1 data. The interferograms pattern shows that coseismic deformation is dominated by horizontal movements with the maximum displacement are over 0.5 m in both tracks and POT results. Then we inverted the geometry parameters of the causative fault and the slip distribution of the fault plane based on the finite dislocation model. The result shows the seismogenic fault has an average strike of 103.0◦ and a northeast dip angle of 84◦. moreover, the coseismic slip is primarily concentrated on the Lenglongling fault with on main asperity of 10 × 23 km and the maximum slip of 3.25 ± 0.34 m at depth of 4 km as well as rupture the eastern of the Tuolaishan fault with a small area of 5 × 5 km at depths of 0–8 km. On the basis of the dCFS results caused by historical earthquakes in Tuolaishan fault and geodetic-derived slip rate of the Tuolaishan fault, we emphasize the potential seismic risk on western Tianzhu gap is high.
期刊介绍:
pure and applied geophysics (pageoph), a continuation of the journal "Geofisica pura e applicata", publishes original scientific contributions in the fields of solid Earth, atmospheric and oceanic sciences. Regular and special issues feature thought-provoking reports on active areas of current research and state-of-the-art surveys.
Long running journal, founded in 1939 as Geofisica pura e applicata
Publishes peer-reviewed original scientific contributions and state-of-the-art surveys in solid earth and atmospheric sciences
Features thought-provoking reports on active areas of current research and is a major source for publications on tsunami research
Coverage extends to research topics in oceanic sciences
See Instructions for Authors on the right hand side.