摘要
断裂带土壤气浓度测量是活动断裂地震危险性评价的重要手段之一。根据郯庐断裂带山东段安丘—莒县断裂和黄线弧形断裂断层土壤气中Rn、CO2和Hg的浓度,探讨断层气体地球化学特征。测量结果表明:安丘—莒县断裂Rn、CO2和Hg的浓度异常明显,且Rn和CO2的浓度异常具有较好的相关性。郯庐断裂带山东段沂沭断裂土壤气中,Rn和CO2浓度异常沿断裂由南向北变小,二者浓度异常与断裂活动性有一定关系。
Measurement of soil gas concentration is one of the most important means of seismic hazard assessment of the fault zone. According to the concentration of Rn, CO2 and Hg in the Anqiu – Ju County fault zone, geochemical characteristics were discussed. The results show that the maximum concentrations of Rn, CO2 and Hg in the fault zone reached 48.58 k Bq/m3, 1.43% and 34 ng/m3, respectively. The concentration of CO2 and Rn had good positive correlation in the fault zone. The abnormal concentration of Rn and CO2 decreased from South to North along Tanlu fault in Shandong Province. There may be a certain relationship between the concentration anomaly and fault activity.
出处
《地震地磁观测与研究》
2016年第1期63-69,共7页
Seismological and Geomagnetic Observation and Research
基金
国家科技支撑计划专题--郯庐地震带中段地震活动规律及地震危险区判定研究(2012BAK19B04-01)
中国地震局地震预测研究所基本科研业务费专项部门任务专项(2014IES0303)共同赞助
