阿尔金断裂微量气体分布与断层现今活动性讨论

DISCUSSION OF THE MICROGAS DISTRIBUTION AND THE RECENT ACTIVITY OF AERJIN FAULT

摘要:

本文研究了阿尔金断裂东北段大鄂博头-宽滩山约340多公里范围内九个剖面的断层微量气体Rn、H₂、CO₂、Hg的浓度沿断裂的变化特征,根据微量气体的浓度变化对断层作了分段,並对断层的现今活动性进行了讨论。指出,大鄂博头-三个泉为现今强烈活动段,三个泉-昌马车路口为活动段,昌马车路口-宽滩山为相对稳定段。在此基础上对阿尔金断裂东北段未来强震作了初步预测。

Abstract:

This paper deals with the features of concentration variation of the microgases （Rn, H₂, CO₂, Hg）along the northeastern segment of Aerjin fault, on which we do 10 plus profiles from Annanba to Kuan-tanshan about 400 plus km. The fault is segmented according to the concentration variation of microgas and the recent fault activity is also discussed. It is suggested that it is a obvious segment of the re-cent activity from Annanba to Sangequan; it is general from Sangequan to Chelukou of Changma; it is relatively stable from Chelukou of Changma to Kuantanshan. Finally, the preliminary strong earthquake forecast on the northeastern segment of Aerjin fault is made.