昆仑山口大地震与地形变异常的讨论  

DISCUSSI ON OF KUNLUN MOUNTAIN LARGE EARTHQUAKE AND RELATED ANOMALIES OF CRUSTAL DEFORMATION

作　　者：薄万举[1] 张祖胜[1] 郭良迁[1] 

机构地区：[1]中国地震局第一地形变监测中心,天津300180

出　　处：《大地测量与地球动力学》2003年第1期22-28,共7页Journal of Geodesy and Geodynamics

基　　金：中国地震局昆仑山 8.1级大震考察研究项目资助

摘　　要：针对昆仑山口大地震 ,总结了多种地形变 (大地测量 )手段所显示的异常变化及其时空分布 ,结果显示 :8.1级大震前存在空间尺度大、时间尺度长的地形变前兆异常。简要介绍了相关的异常图像 ,给出了初步解释 ,并对未来震情的发展进行了探讨 ,认为近期内强震活动向华北迁移的可能性不大。ForresearchontheoccurrenceofKunlunMountainPasslargeearthquake ,theabnormalvaria tionsanddistributionofcrustaldeformationshowedbydifferentmeansintimeandspacearereviewedinthispa per ,andtheabnormalcharacteristicsofcrustaldeformationprecursorinlargescaleoftimeandspacearepresent ed .Accordingtothecharacteristics ,theauthorspresentthemid long termpredictionofriskregionwithearth quakesofMS≥ 6intheeastandMS≥ 7inthewestofChinacontinentfrom 1997to 1998.TheKunlunMoun tainPasslargeearthquakewithMS8.1locatednearoneoftheriskregion ,andits 35 0kmlongruptureonthe surfacejustpassesthroughthepredictedregion .Somerelativeabnormalpicturesarepresentedhereandthepri maryexplanationisgiven .Finally ,thedevelopmentofseismicsituationinthefutureisstudiedanddiscussed .

关 键 词：昆仑山 地震危险区 地震预测 地震前兆 大地测量 地形变 

分 类 号：P315.725[天文地球—地震学]