黑龙江中西部跨断层土壤氢气初步分析

Preliminary analysis of hydrogen in cross-fault in central west Heilongjiang Province

地质构造运动多伴随地下气体的逸出,观测并研究地下逸出气体,会抓住某些地下构造活动信息。作为地球化学观测的灵敏指标之一,地下逸出的氢气能够指示断裂活动的过程。地处松辽盆地黑龙江中西部地区多年来已开展多期跨断层土壤氢气野外测量工作,利用积累的观测数据,初步分析该地区跨断层土壤氢气背景动态变化及构造活动、地震活动特征,以便为地震孕育过程中断层氢气演化异常判定提供依据,为建立区域地震短期预测动态方法提供思路。

The movement of geological structure is mostly accompanied by the escapes of underground gas,so observing and studying the escapes of underground gas may get some information about some underground tectonic activities.Hydrogen,as a sensitive indicator,can indicate the process of fracture activity.Over the years,field measurements of the escaped hydrogen have been carried out in Songliao basin to find out the dynamic characteristics of hydrogen from fault in central west Heilongjiang Province,which provides the basis for judging the abnormal evolution of hydrogen in the process of earthquake preparation and offer some ideas about establishing dynamic method of short-term earthquake prediction.