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选取1980年以来距新10号泉300 km范围内的16次5级以上地震为研究对象,通过对新10号泉水化学参数在上述地震前后的全程时空扫描,初步总结出该泉水化学测项的前兆异常特征。(1)异常形态各异:硫化物为中期高值异常;氟离子以短期异常和中期异常为主;电导率基本上表现为中期高值异常;水汞以中期高值异常为主,个别地震前会出现临震高值异常;水氡为中期高值异常或年变畸变;甲烷则一般表现为高值中期异常,个别地震前也会在中期异常的基础上叠加大幅度临震异常;氦气为高值正异常。(2)映震对应率:硫化物为81.3%,氟离子为57.1%,电导率为31.3%,水汞为55.6%,水氡为18.8%,甲烷为46.7%,氦气为46.7%。
This paper chooses 16 earthquakes of magnitude 5 above 300 km away from the new No.10 spring since 1980 as the research object. Through the spatio-temporal scanning of the chemical parameters of the new No.10 spring water before and after the above earthquake, Precursor anomaly characteristics. (1) Different forms of anomaly: Sulfide is mid-term high value anomaly; Fluoride ion is mainly short-term anomaly and mid-term anomaly; Conductivity is basically mid-term high value anomaly; High value anomalies in the former epicenters occur; water radon is mid-term high value anomaly or annual variation; methane is generally characterized by high value mid-term anomalies; and before individual earthquakes, large-scale projectile anomalies are superimposed on the basis of mid-term anomalies; Gas is abnormal high value. (2) Corresponding rate of reflection: Sulfide 81.3%, Fluoride 57.1%, Conductivity 31.3%, Mercury 55.6%, Water Radon 18.8%, Methane 46.7% and Helium 46.7%.