【摘要】 １９９５年７月２２日０６时４４分于北纬３６°２３＇，东经１０３°１３＇甘肃省永登县七山乡发生Ｍｓ５．８级地震。该地震震中距兰州市中心仅９０ｋｍ，并发生在甘肃青海两省前兆台网密度较大地区。本文将对震前甘肃局对这次地震的预报情况，甘肃中东部及其毗邻的青海东北部地区前兆异常显示及其时空分布特征作一介绍。更多还原

【Abstract】 Yongdeng earthquake with Ms5.8 occurred on July22.1995 in Gansu provine, the epicenter wasonly 90km from the Lanzhou city,and it occurred in the density area of precursory stations network inGansu and Qinghai provinces. This paper was discussed the prediction of the earthquake,the precursorry anomaly and its time─space features.更多还原