新04号泉溶解气CO_2异常特征分析
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摘要
运用Mapsis软件前兆异常分析中的差分和从属函数,对新04号泉溶解气CO_2进行异常识别,结果认为:①差分和从属函数异常形态均为高值异常;②差分异常对近场中强震和远场强震的映震率均为71.4%(5/7);从属函数异常对近场中强震的映震率为66.7%,而对远场强震的映震率为83.3%(5/6);两者均出现异常时,对近场中强震的映震率为66.7%,对远场强震的映震率为100%(6/6);③差分和从属函数的最大异常量与近场中强震的震中距基本成正比,可提高地震地点预报的精度。
Using difference and subordinate function methods in mapseis soft,the anomaly of CO_2 in new No.04 spring is analyzed.The result shows that:①The abnormal configuration is positive anomaly;②The reflection earthquake ratio of difference anomaly is 71.4% for the medium -strong earthquakes in near region and strong earthquakes in far region;the reflection earthquakes ratio of subordinate function anomaly is 66.7% for medium-strong earthquakes, for strong earthquakes it is 83.3%;when the two kinds anomalies occurred,the reflection earthquake ratio is 66.7% for medium-strong earthquakes,it is 100% for strong earthquakes; ③It is direct ratio between the most abnormal range of difference and subordinate function anomalies and epicenter distance.This result can promote the precision of location prediction for earthquake.
Using difference and subordinate function methods in mapseis soft,the anomaly of CO_2 in new No.04 spring is analyzed.The result shows that:①The abnormal configuration is positive anomaly;②The reflection earthquake ratio of difference anomaly is 71.4% for the medium -strong earthquakes in near region and strong earthquakes in far region;the reflection earthquakes ratio of subordinate function anomaly is 66.7% for medium-strong earthquakes, for strong earthquakes it is 83.3%;when the two kinds anomalies occurred,the reflection earthquake ratio is 66.7% for medium-strong earthquakes,it is 100% for strong earthquakes; ③It is direct ratio between the most abnormal range of difference and subordinate function anomalies and epicenter distance.This result can promote the precision of location prediction for earthquake.
引文
鲍鸿儒.天津深层水中气体总量和二氧化碳预报地震效能评价//地震监测与预报方法清理成果汇编地下水分册[M].北京:地震出版社,1988．
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崔勇,黄辅琼,李新勇.新04井(泉)流体测项长程趋势变化分析[J].内陆地震,2006,20(1) :81-87．
范雪芳,张淑亮,王吉易,等.地下流体中期和中短期前兆异常四种判定方法[J].地震,2002,22(4) :136-139．
胡凤英,谢健健,王志敏,等.清丰水化站水中溶解气二氧化碳观测资料的研究[J].地震研究,2004,27(增刊):43-47．
任晓霞,任佳,闫熠,等.赤城台水位异常与地震关系的研究[J].地震地磁观测与研究,2004,25(6) :91-96．
叶秀薇.粤闽地区地下流体从属函数异常与地震关系的初步研究[J].防灾减灾工程学报,2004,24(2) :195-201．
张启明.云南大理地区温泉CO_2释放与地震预报研究[J].地震研究,2001,24(3) :238-244．
郑熙铭,冯德益,田山.地震前兆异常的动态从属函数及其特征指标的研究[J].地震,1994,(1) :36-43．
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