特克斯5.9级地震前地下流体异常特征分析
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摘要
2007年7月20日在新疆特克斯县境内发生MS5.9地震,震前哈萨克斯坦地下流体和新疆部分流体测项出现了前兆异常。通过分析资料,总结出其异常类型大致有3种:①脉冲异常,表现为泉水中气泡规律性大幅度的脉冲,在水位记录纸上形成有一定规律的间隔"脉冲峰";②波动异常,主要表现为速率变化、上升幅度超出正常波动范围;③年变畸变异常,主要表现为打破年变规律。
On July 20,2007,the earthquake with MS5.9 occurred in Xinjiang Tekesi County.Before the earthquakes,the underground fluid items of Kazakhstan and the partial fluid items of Xinjiang appeared precursory abnormity.Through the data analysis,we summarized that its abnormal types have approximately 3 kinds: ① The pulse is abnormal.It displays regular and large scale pulses of air bubble in spring water.It comes into being certain regular and distant "the pulse peak" on the water level recording paper;② The undulation is abnormal.It shows mainly that the change speed and the ascending range surpasses the normal undulation scope;③ The annual variation is malformation abnormity.It shows mainly that they breaks annual variation rule.
On July 20,2007,the earthquake with MS5.9 occurred in Xinjiang Tekesi County.Before the earthquakes,the underground fluid items of Kazakhstan and the partial fluid items of Xinjiang appeared precursory abnormity.Through the data analysis,we summarized that its abnormal types have approximately 3 kinds: ① The pulse is abnormal.It displays regular and large scale pulses of air bubble in spring water.It comes into being certain regular and distant "the pulse peak" on the water level recording paper;② The undulation is abnormal.It shows mainly that the change speed and the ascending range surpasses the normal undulation scope;③ The annual variation is malformation abnormity.It shows mainly that they breaks annual variation rule.
引文
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[3]高小其,许秋龙,李艳萍,等.乌鲁木齐10号泉流量的映震特征及其映震机理[J].地震研究,2001,24(3):233-237.
[4]高小其,许秋龙,王道,等.地下流体中强震源兆、场兆、强震远兆映震特征及其映震机理的研究[J].地震,2002,22(3):81-88.
[5]高小其,许秋龙,兰陵,等.新04、10号井水位及新10号泉流量映震特征的对比分析[J],内陆地震,2002,16(4):346-354.
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