我国地形变场的统计特征及与地温场的相关
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摘要
利用１９８６～１９９０年我国大陆４２°Ｎ以南，９７°Ｅ以东共４１个站的地倾斜资料，内插到经纬度１°×１°的网格上，可求得各月的地形变场，由此分析得到地凸区、地凹区、鞍形区、半鞍形区等形变特征场。结果表明：在逐月的地形变场上，一般有４～５个地凸区和地凹区，其平均水平尺度约４００ｋｍ，单体生命史大约３．５季；地凸／凹区中心与地震活动带基本一致。另外，地凸区与地热涡，地凹区与地冷涡有很好的对应，此结果支持了文献〔８〕提出的地气耦合的概念模式。
Interpolating the ground tilt data in mainland (south to 45°N, east to 97°E, totally 41stations)during 1986 to 1990 into grid points of 1°×1°, the monthly earth surface deformation field was calculated. Some characteristics of deformation field can be identified from it including convex area、concave area and saddle area, etc. The results show that there are usually 4～5 convex and concave areas respectively on monthly or seasonal deformation field with an average horizontal scale of 400 km or so and a life span of 3.5 seasons approximately. The concentration region of centers of convex/concave areas consists with the earthquake belts. Moreover, the convex area is well corresponding to the “Underground hot vortex”while the concave area is in good agreement with “Underground cold vortex”, which strongly supports the conceptual model indicating the couple between the earth and the atmosphere proposed in Reference 8 .
Interpolating the ground tilt data in mainland (south to 45°N, east to 97°E, totally 41stations)during 1986 to 1990 into grid points of 1°×1°, the monthly earth surface deformation field was calculated. Some characteristics of deformation field can be identified from it including convex area、concave area and saddle area, etc. The results show that there are usually 4～5 convex and concave areas respectively on monthly or seasonal deformation field with an average horizontal scale of 400 km or so and a life span of 3.5 seasons approximately. The concentration region of centers of convex/concave areas consists with the earthquake belts. Moreover, the convex area is well corresponding to the “Underground hot vortex”while the concave area is in good agreement with “Underground cold vortex”, which strongly supports the conceptual model indicating the couple between the earth and the atmosphere proposed in Reference 8 .
引文
1冯锐．地倾斜与地震．北京：地震出版社，1978．219～2302国家地震局科技监测司．地震监测与预报方法清理成果汇编（重力、地倾斜、地应力分册）．北京：地震出版社，1989．204～2163梅世蓉，冯德益等．中国地震预报概论．北京：地震出版社，1993．96～1264胡泽勇．中蒙地温、降水资料的网格化处理及一些初步分析结果．高原气象，1994，13（2）：162～1685方德植．微分几何．北京：人民教育出版社，1981．137～1516汤懋苍，张建．天阴地阳互补说———一种天地对立统一观．现今地球动力学论文集．北京．地震出版社，1994．169～1807汤懋苍，高晓清．1980～1993年我国地热涡＂的若干统计特征—Ⅰ．地热涡＂的时空分布．中国科学，1995，25（11）：1186～11928汤懋苍，高晓清．1980～1993年我国地热涡＂的若干统计特征—Ⅱ．地热涡＂与地震的统计相关．中国科学，1995，25（12）：1313～13199聂高众，马宗晋．谈我国重大自然灾害的中长期综合预报问题．地学前缘，1996，3（1～2）：203～211
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