新疆沙湾M_S5.0地震与托克逊M_S5.4地震前兆异常分析
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摘要
利用形态分析法,分析2015年2月22日沙湾M_S5.0地震和6月25日托克逊M_S5.4地震的前兆数据异常特征。结果表明:沙湾地震发生前,新04泉氢气、乌苏新33井深层水温、榆树沟水管仪、克拉玛依后山2号钻孔倾斜、精河水管仪出现了明显的中短期异常变化,主要表现为数据的高值突跳、阶变、加速变化、年变畸变、矢量打结、反向变化等。托克逊地震前,榆树沟水管仪、库尔勒水平摆出现形态畸变、矢量打结、速率减慢等异常变化。
Take conventional morphological analysis to study precursor anomaly characteristics of Xinjiang Shawan earthquake with M_S5. 0 and Tuokexun earthquake with M_S5. 4. Results showed there were obvious medium-short term anomalies before Shawan earthquake such as,hydrogen in No. 04 spring,deep water temperature in Wusu No. 33 well,water tube in Yushugou,Houshan No. 2borehole tilt in Karamay,water tube in Jinhe. The anomaly pattern mainly expressed as high value jumps,stepped change,acceleration,annual change distortion,vector tie and reverse change. Before Tuokexun earthquake,water tube in Yushugou and horizontal pendulum in Korla appeared distorted shape,vector tie and slow rate change.
Take conventional morphological analysis to study precursor anomaly characteristics of Xinjiang Shawan earthquake with M_S5. 0 and Tuokexun earthquake with M_S5. 4. Results showed there were obvious medium-short term anomalies before Shawan earthquake such as,hydrogen in No. 04 spring,deep water temperature in Wusu No. 33 well,water tube in Yushugou,Houshan No. 2borehole tilt in Karamay,water tube in Jinhe. The anomaly pattern mainly expressed as high value jumps,stepped change,acceleration,annual change distortion,vector tie and reverse change. Before Tuokexun earthquake,water tube in Yushugou and horizontal pendulum in Korla appeared distorted shape,vector tie and slow rate change.
引文
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[3]冯英,潘振生,徐衍刚,等.阿图什市5.2级地震与于田6.2级地震前兆异常分析[J].地震地磁观测与研究,2013,34(3):6-12.
[4]杨又陵,高国英.北天山西段中强地震前地倾斜异常的演化分析[J].大地测量与地球动力学,2005,25(3):98-101.
[5]杨又陵,王海涛,曲延军.1995年5月2日新疆维吾尔自治区乌苏南5.8级地震[C]//陈棋福.中国震例(1995-1996).北京:地震出版社,2002:66-86.
[6]杨又陵,张翼.2003年2月14日石河子MS5.4地震地形变异常及其演化分析[J].内陆地震,2005,19(3):241-248.
[7]王在华,滕海涛.新疆新源、和静交界MS6.6地震前形变异常[J].内陆地震,2012,26(4):347-353.
[8]高丽娟,邢喜民,杨绍富,等.新源、和静交界MS6.6地震前库尔勒地震台部分异常识别和分析[J].内陆地震,2014,28(1):22-29.
[9]郭安宁,郭增建.2012年6月30日新疆新源、和静交界MS6.6地震的中期粗略预测[J].内陆地震,2013,27(4):291-294.
[10]中国地震局监测预报司.地震地下流体理论基础与观测技术[M].北京:地震出版社,2007.