摘要
对朝阳-北票断裂上的北票黄花营子水准场地和朝阳桃花吐水准场地进行跨断层土壤气Rn、CO_(2)、CO和H_(2)浓度测量,结果表明,黄花营子水准场地土壤气Rn、CO_(2)、CO和H_(2)浓度变化范围分别为1.027~14.35 kBq/m^(3)、0.1%~0.77%、0.2~1.4 ppm和21.45~303.4 ppm;桃花吐水准场地土壤气Rn、CO_(2)、CO和H_(2)浓度变化范围分别为1.88~18.15 kBq/m^(3)、0.23%~4.53%、0.2~2.6 ppm和12.03~399 ppm。土壤气地球化学分析结果表明,Rn、CO_(2)、CO和H_(2)浓度在水准测线范围内具有准同步高值异常变化特征,且测线内多点浓度高于异常下限,揭示朝阳-北票主干断裂在2处水准测线范围内经过,水准数据自2018年以来出现的张性变化真实可靠,主要与构造活动作用增强有关。
The concentration of soil gases Rn,CO_(2),CO and H_(2) are measured in Huanghuayingzi and Taohuatu,which are in Chaoyang-Beipiao fault in western Liaonin province.The results of cross-fault leveling in Huanghuayingzi show that the concentrations of soil gases Rn,CO_(2),CO and H_(2) vary from 1.027 to 14.35 kBq/m^(3),0.1%to 0.77%,0.2 to 1.4 ppm and 21.45 to 303.4 ppm,respectively.The results of cross-fault leveling in Taohuatu show that the concentrations of soil gases Rn,CO_(2),CO and H_(2) vary from 1.88 to 18.15 kBq/m^(3),0.23%to 4.53%,0.2 to 2.6 ppm and 12.03 to 399 ppm,respectively.The geochemical characteristics of soil gases show that the high concentration of soil gases Rn,CO_(2),CO and H_(2) within the confines of the leveling line has a quasi-synchronous characteristic,and concentrations of some measuring points are higher than anomaly threshold.These characteristics of soil gases have revealed that the two cross-fault leveling observation sites are all passed through by the major fault of Chaoyang-Beipiao fault.The abnormal tension of the leveling data since 2018 both in Huanghuayingzi and Taohuatu are reliable,which is related to the tectonic activity.
作者
王喜龙
杨梦尧
孔祥瑞
杨振鹏
WANG Xilong;YANG Mengyao;KONG Xiangrui;YANG Zhenpeng(Liaoning Earthquake Agency,44 North-Huanghe Street,Shenyang 110034,China;Crea Assets Evaluation Co Ltd of Inner Mongolia,48 South-Erhuan Road,Hohhot 150105,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2021年第6期600-605,共6页
Journal of Geodesy and Geodynamics
基金
中国地震局地震科技星火计划(XH19007Y,XH19008Y)
中国地震局震情跟踪定向工作任务(2021010303,2020010307,2019010503)。
关键词
跨断层水准
土壤气
地球化学
朝阳-北票断裂
辽西地区
cross-fault leveling
soil gas
geochemistry
Chaoyang-Beipiao fault
western Liaoning province
