Higher degree moment tensor inversion of Mani earthquake using far-field broadband recording

• 作 者: 刘瑞丰 陈运泰 成瑾 杨辉 韩炜 牟磊育
• 出 处: Acta Seismologica Sinica(English Edition)
• 发表日期: 2000年03期
• 关键词: recording tensor broadband inversion Figure Cotton Jordan Silver Richards

Breakthrough point source model, extended earthquake source model is used to calculate more seismic source parameters in this paper. We express seismic source using higher degree moment tensors, to reduce a Iarge number terms originally presenting in higher degree moment tensor representation, Haskell rupture model is used. We in verted the source parameters of Mani earthquake in Tibet using broad-band body wave of 32 stations of Global Seismograph Network (GSN), the results show that it is a strike-slip fault, rupture direction is 75°, rupture duration is 19 s, the fault plan is φ=77°， δ5=88°, A=0°, the auxiliare plane is φ=347°, δ=90°, k=178°, and the fault dimension is 47 km×28 km. These results will give new quantitative data for earth dynamics and have practical meaning for seismic source tomography research.

Breakthrough point source model, used to calculate more seismic source parameters in this paper. We express seismic source using higher degree moment tensors, to reduce a Iarge number terms originally presented in higher degree moment tensor representation, Haskell rupture model is used. We in verted the source parameters of Mani earthquake in Tibet using broad-band body wave of 32 stations of Global Seismograph Network (GSN), the results show that it is strike-slip fault, rupture direction is 75 °, rupture duration is 19 s, the fault plan is φ = 77 °, δ5 = 88 °, A = 0 °, the auxiliare plane is φ = 347 °, δ = 90 °, k = 178 °, and the fault dimension is 47 km × 28 km. These results will give new quantitative data for earth dynamics and have practical meaning for seismic source tomography research.