1990年共和7.0级地震的发震构造讨论

A DISCUSSION ON SEISMOGENIC FAULT FOR THE GONGHE MS7.0 EARTHQUAKE IN 1990

摘要:

根据地质、地震及形变资料研究了1990年4月青海省共和M_S7.0地震的发震构造.认为NW-NWW向的哇玉香卡-拉干逆冲盲断裂是该次地震的发震构造.其地表形变以褶皱隆起为主.因此,共和地震是一次典型的"盲断裂-褶皱地震".

Abstract:

Seismogenic structure of the Gonghe M_S7.0 earthquake on Apr.26,1990 in Qinghai province is studied by using data on geology,seismology and deformation.It is possible that the Wayuxiangka-Lagan blind thrust fault with trend of NW-NWW is the seismogenic fault for the Gonghe M_S7.0 earthquake in 1990.Ground deformation by the Gonghe earthquake is fold-up-heaval mainly.Therefore,the Gonghe earthquake is a typical "blind fault-folding earthquake".