利用CIC-200型离子色谱仪监测地震前兆异常

Seismic Precursory Anomalies Monitored by CIC-200 Ion Chromatograph

在利用CIC-200型离子色谱仪地震观测中,福州台实现水样高浓度地震观测,提出通过比测实验,选择合适水样稀释浓度;阐述福州台遇见几种干扰因素对观测数据影响及处理方法,以及对混合标准溶液进行检验和仪器工作状态检验。初步分析2014年7月11日广东河源M_S4.2级震例,福州ZⅢ-6钻孔震前有5项、华安井震前有3项阳离子前兆数据出现高值异常变化,有些测项出现临震异常。从异常机理上分析认为,福州水化高值异常机理主要是压溶机理,产生阳离子高值异常。

Observing by the CIC-200 ion chromatograph,the high concentration ion water sample observation was realized at Fuzhou Seismic Station.It is proposed that the suitable diluted concentration of the water sample should be selected by the contrast experiment.This paper expounded the interference factors,solutions,and the instrument working condition test by CIC-200 model ion chromatograph for Fuzhou Seismic Station.Based on the primary analysis of Guangdong Heyuan MS4.2 earthquake occurred on Jul.11,2014,5 high anomalous changes in Fuzhou ZIII-6 well and 3 high anomalous changes in Huaan well were found out.And some impending anomalies occurred in some tests.Analyzing from the mechanism of anomaly,the hydrochemical high data anomaly mechanism of Fuzhou is the pressure and dissolution mechanism,which produced the high data anomaly of positive ion.