丽江7级地震震区的汞量异常分析  

ANOMALY ANALYSIS OF MERCURY CONCENTRATION IN EPICENTRAL AREA OF LIJIANG EARTHQUAKE OF 7 0

作　　者：朱培耀[1] 杨继登[1] 

机构地区：[1]云南省地震局,昆明650041

出　　处：《地震研究》1999年第2期153-158,共6页Journal of Seismological Research

摘　　要：本文主要根据测汞技术在震区配合地震地质、烈度区划等项工作， 目的是探测盆地内的隐伏断层。汞含量在断层上方有明显的高值异常， 这已为许多基础实验所证实， 在地震领域已有运用。我们这次在丽江盆地共设了六条测汞剖面， 取得了较好的效果。一般在高烈度异常点、地裂缝地段、抛石块地段， 汞的测值均高于背景值， 达异常指标。汞的高异常点（ 段） 往往是断层上方， 从而证实发震断层在盆地内通过， 而这条断层又与玉龙山前断裂的走向基本一致，Mercury observation technology is used to explore underlying faults in basins coordinating with seismo geology and intensity zoning.Mercury concentration has obvious anomaly of high values on fault,which is verified by many evidences,and used in seismic field.6 profiles of mercury observations had deployed in Lijiang basin,and achieved good results.Generally speaking,mercury observations in anomalous points with high intensity,segments of fissure and stone jumping are all above background value,reaching anomalous index.And the high anomalous points of mercury are usually above the faults,verifying that earthquake generating fault is crossing in the basin.This fault strikes in similar direction with Yulong piedmont fault,that explains Yulong piedmont fault underlies the basin.

关 键 词：汞量异常 隐伏断层 丽江地震 地震预报 

分 类 号：P315.2[天文地球—地震学]