2008年8月30日新疆和静M_S5.6地震前形变资料异常分析
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摘要
2008年8月30日新疆和静5.6级地震发生在2008年度新疆划定的5.5级左右地震危险区内。对该次地震前天山中段地区定点形变资料出现的异常变化进行了分析和总结,和静5.6级地震前近场定点形变资料存在明显的趋势异常背景,有一定比例的中短期和短期异常显示,无突出短临异常,地震发生在短期异常相对集中的地区。地震发生后所有中短期和短期异常结束,但多数趋势异常仍在持续,因此,北天山西段和南天山东段地区可能仍处于中强地震的中期孕震阶段。
Hejing earthquake with MS5.6 on Aug.30,2008 occurred in the 2008 earthquake risk region about MS5.5 in Xinjiang.The author analyzed and summarized the anomalous change of earth deformation data in the western part of northern Tienshan and eastern part of southern Tienshan before Hejing earthquake with MS5.6.The result showed there were obvious trend anomalies,some medium short term and short term anomalies,no short-imminent anomaly;the earthquake occurred in the area with most medium-short term and short term anomalies.All the medium shortterm and short term anomalies ended after the earthquake,but most trend anomalies still continued.Therefore,there is the possibility of moderately strong earthquake in the western part of northern Tienshan and eastern part of southern Tienshan.
Hejing earthquake with MS5.6 on Aug.30,2008 occurred in the 2008 earthquake risk region about MS5.5 in Xinjiang.The author analyzed and summarized the anomalous change of earth deformation data in the western part of northern Tienshan and eastern part of southern Tienshan before Hejing earthquake with MS5.6.The result showed there were obvious trend anomalies,some medium short term and short term anomalies,no short-imminent anomaly;the earthquake occurred in the area with most medium-short term and short term anomalies.All the medium shortterm and short term anomalies ended after the earthquake,but most trend anomalies still continued.Therefore,there is the possibility of moderately strong earthquake in the western part of northern Tienshan and eastern part of southern Tienshan.
引文
[1]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.
[2]杨又陵,孙甲宁,高国英,等.新疆地倾斜地震短期异常特征研究[J].西北地震学报,2006,28(1):64-68.
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[7]高小其,许秋龙.2003年2月14日新疆石河子5.0、5.4级地震地下流体前兆异常特征的分析[J].内陆地震,2004,18(1):64-71.
①新疆维吾尔自治区地震局.新疆和静5.6级地震科学考察报告,2008年.
②新疆维吾尔自治区地震局.新疆维吾尔自治区2009年度地震趋势研究报告,2008年11月.
[2]杨又陵,孙甲宁,高国英,等.新疆地倾斜地震短期异常特征研究[J].西北地震学报,2006,28(1):64-68.
[3]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(1):98-101.
[4]杨又陵,高国英,温和平,等.新疆地震前兆异常特征研究[J].地震,2005,25(1):89-96.
[5]中国地震局监测预报司.强地震中期预测新技术物理基础及其应用研究[M].北京:地震出版社,2008.
[6]孙甲宁,温和平,杨晓芳.2006年乌苏MS5.1地震前后北天山地倾斜资料异常分析[J].西北地震学报,2008,30(1):66-70.
[7]高小其,许秋龙.2003年2月14日新疆石河子5.0、5.4级地震地下流体前兆异常特征的分析[J].内陆地震,2004,18(1):64-71.
①新疆维吾尔自治区地震局.新疆和静5.6级地震科学考察报告,2008年.
②新疆维吾尔自治区地震局.新疆维吾尔自治区2009年度地震趋势研究报告,2008年11月.
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