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- Title
利用远场记录反演2023年甘肃积石山 M6.2地震破裂过程.
- Authors
王安简; 高原
- Abstract
This study utilized teleseismic data to invert and analyze the rupture process of the 2023 Jishishan M6. 2 earthquake in Gansu, China. The causative fault of the earthquake was likely to be a previously unclear local fault, the Jishishan eastern margin fauIt. The resu Its indica ted that the ea_rt hquake rupture las ted approxima tely 8 s, with a primary rupture length of 20〜25 km and a width of about 25 km. On the nodal plane I with a strike of 164°, the entire rupture process released a scalar seismic moment of 1. 46 X1018 N • m, equivalent to a moment magnitude of Mw6. 05 with a maximum coseismic slip of 0. 25 m. The estima ted centroid depth was 9. 5 km and the rup ture primarily ext ended in the sout h-sou thea_st direction along the faul t str ike. On the nodal plane H with a strike of 303°, the scalar seismic mome nt released was 1. 38 X 1018 N • m, equivale nt to a momen t magnitude of Mw6. 03, with a maximum coseismic slip of 0. 19 m and a centroid depth of 11. 1 km. The rupture exhibited a bilatera_l pa/ttern, predominantly extending in the southeast direction, with a northwestward expansion trend.
- Publication
Earthquake (1000-3274), 2024, Vol 44, Issue 1, p195
- ISSN
1000-3274
- Publication type
Article
- DOI
10.12196/j.issn.1000-3274.2024.01.017