【摘要】 通过对青海省湟水盆地影响较大的5次破坏性历史地震的重新考证，确定了每次地震的宏观震中、震级大小、发震断层以及地震等震线，从而得出盆地东部一平安至民和块体及其周边地区，基底介质强度较弱，为中强地震活动水平较高的危险地区。更多还原

【Abstract】 The authors reinvestigate 5 large historical destructive earthquakes in Huangshui basin,Qinghai province, redeterminate the epicentre .magnitude .fault and isoseismic line of each earthquake, and think that the eastern basin --Pin ’an to Minghe block and its adjacent areas are seismic risk region of higher medium --strong earthquake activity because of weak basement medium.更多还原