1125年兰州7级地震震中位置初探

A PRELIMINARY STUDY ON EPICENTRAL LOCATION OF THE LANZHOU MS7 EARTHQUAKE IN 1125

摘要:

通过史料考证,确定了1125年兰州7级大震时被震毁的益机滩堡的位置.根据史料记载的该次地震的破坏范围及实地考察结果,认为该次地震的震中位置可能在现今河口及八盘峡、西固、阿干镇一带,在这一范围内,黄土滑坡密集分布.

Abstract:

Based on results of tex tual research on histo rical data,location of Yijitanbao which had been destroyed during the 1125 Lanzhou M_S7 earthquake is determined.Analysing destroyed range of the event from historical data and site investigation,epicentral region of the event may be from Hekou,Bapanxia,Xigu to Ag anzhen where Loess landslips is densely distributed.