摘要
1990年四川省乐山市金口河工农区连续发生4.8级和5.0级两次破坏性地震。震中位于峨边高山区大渡河谷,发震构造北北东向金口河断裂表现出自第四纪以来在区域间歇性背景上强烈的抬升运动。震害与烈度等值线沿发震构造呈长条形展布,震中区烈度达二度。两次地震及其间的特大暴雨,造成震灾与山地灾害叠加的严重灾情。
In 1990, two distructive earthquakes with Ms=4.8, 5.0 occurred one after another in Jinkouhe town, Luoshan city, Sichuan Province. The epicenter were located in Daduhe river valley in Ebian mountain range. Jinkouhe fault with strike of NNE, the seismogenic structure, showed violent uplift motion on the setting of intermittent region movement since Quaternary period. The earthquake disas- ters and the seismic intensities streched as a extended shape along the seismogenic structure, with the intensity at epicenter being Ⅵ. Two earthquakes, together with the extremely violent rainstorm oc- curred in the interval between two events, resulted in serious losses caused by the earthquake disasters stacked with the moutainous calamities.
出处
《四川地震》
1991年第2期48-54,共7页
Earthquake Research in Sichuan
