1986年8月26日门源6.4级地震考察初步总结

A PRELIMINARY SUMMARIZATION OF MENYUAN EARTHQUAKE (M=6.4)ON AUG. 26, 1986

摘要:

考察结果表明,地震宏观震中位于北纬37°37'、东经101°38',震中烈度约Ⅷ度、震源深度13公里。Ⅵ度区面积为2600平方公里,长轴方向为N55°W。发震断层为冷龙岭山脊断层,该断层走向为N60°W,属于北祁连断裂带中段的组成部份。文中初步总结了有关地震前兆资料和震区宏观异常现象,对震区地震趋势进行了初步讨论。

Abstract:

In the paper, the macroscopic parameters, intensity and geological tectonic conditions of the Menyuan earthquake of 6.4 which occurred on Aug. 26, 1986 are briefly introduced. Moreover, it remarkably depicts the precursory phenomena of the quake. The seismic trend in the, epicentral and adjacent areas is preliminarily predicted.