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- Title
2023年甘肃积石山Ms6. 2地震: 一次逆冲为主的浅源强震.
- Authors
杨彦明; 苏淑娟
- Abstract
The focal mechanism solution of the Jishishan Ms6. 2 Earthquake on 18 December 2023 in Gansu Province was made an inversion by the waveform fitting method in three-dimensional space using the observed waveform from the Regional Seismic Net works in China. The resuIts show that the moment magnitude is Mw6. 02, the strike/dip/slip of the first nodal plane are 305°/56°/61° and those of the second nodal plane are 169743°/125°. The best fine spatial position of the waveform fitting is 102. 377°E, 35. 968°N, with depth of 9 km. The resu Its show that main rup ture extends along NW direction. It is inferred preliminary that the nodal plane H is Fault-Plane, and seismogenic fault is the northern margin fault of the Lajishan mountains (eastern margin fault of the Jishishan mountain). Additionally, the event is a shallow strong earthquake induced by thrust-domina ted faulting mechanism with little str ike-slip compone nt.
- Publication
Earthquake (1000-3274), 2024, Vol 44, Issue 1, p167
- ISSN
1000-3274
- Publication type
Article
- DOI
10.12196/j.issn.1000-3274.2024.01.013