华北隐伏活动断裂H＿2异常特征及其异常机制研究  

STUDY ON CHARACTRISTICS AND MECHANISM OF H2 ANOMALY ON THE HIDDEN ACTIVE FAULTS IN NORTH CHINA

作　　者：林元武[1] 翟盛华[1] 范树全[1] 孔令昌[1] 

机构地区：[1]国家地震局地质研究所

出　　处：《地震地质》1994年第3期264-268,共5页Seismology and Geology

基　　金：地震科学联合基金

摘　　要：在华北北部３条断裂活动性和地震活动性差异较大的隐伏断裂上取５４个土壤气样品。经对比研究发现，隐伏活动的唐山断裂和夏垫断裂上，Ｈ２异常显著，一般比背景值高几十倍；而隐伏不活动的香河－皇庄断裂上，Ｈ２则没有异常。在探讨隐伏活动断裂Ｈ２异常机制中，认为Ｈ２不是生物作用的产物，而是来源于结晶基底片岩、片麻岩等的破裂或水岩反应。不论Ｈ２来源如何，它都与断裂活动密切相关。54 soil-gas samples were collected from three hidden faults which are considerable differentin fault movement and seismicity in the northern part of North China. The results indicate thatthere are notable anomalies in H2 on Tangshan and Xiadian hidden active faults，but no anomalyon Xianhe-Huangzhuang hidden inactive fault．On the basis of discussion on anomalous mecha-nism of H2 on the hidden active fault，we suggest that H2 is not generated in biological process butis a product of degassing in rupturing of the basement schist and gneiss or water-rock reaction.H2 anomaly is closely related with fault movement whether H2 is produced in rupture of rock or inwater-rock reaction.

关 键 词：隐伏活动裂 氢气异常 地震地质 

分 类 号：P315.7[天文地球—地震学]