宁夏及邻近地区地震活动能量场的统计分析

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：STATISTICAL ANALYSIS ON ENERGY FIELD OF SEISMICITY IN NINGXIA AND ITS NEIGHBORHOOD REGION 中文刊名：地震学报 英文刊名：Acta Seismologica Sinica 作者：杨明芝 ; 赵卫明 英文作者：Yang Mingzhi Zhao Weiming (Earthquake Administration of Ningxia Hui Autonomous Region ; Yinchuan 750001 ; China) 中文关键词：地震能量场 ; 自然正交展开 ; 预测方法 英文关键词：earthquake energy field ; natural orthogonal function expansion ; prediction method 出版日期：2004-10-15 机构：宁夏回族自治区地震局 ,宁夏回族自治区地震局 中国银川750001,中国银川750001 年：2004 期：05 出版单位：地震学报

摘要

应用随机函数理论 ,将区域地震活动能量看作是空间和时间的随机函数 ,采用自然正交函数展开的分析方法 ,对宁夏及邻近地区小地震活动场的特征进行了研究 .重点分析了场的主要部分 ,即前几个典型场的时间“权重”系数的时间变化 ,发现它们在中强地震发生前数值有较大幅度的升、降变化 ,显示出了与区域及其周围中强地震相关的变化特性 .从宁夏地区的震例看 ,地震能量随机场的自然正交函数展开方法是一种值得探索的地震分析预测方法 .
The random function theory is used in the paper. Taking the regional seismicity energy as the random function of space and time, the features of small seismicity field in Ningxia and its neighborhood region are studied by the analytical method of natural orthogonal function expansion. The chief part of the field, i.e., the temporal changes of time "weight" coefficients of first several typical fields is analyzed. We have found that their values had upward and downward changes of a large amplitude before moderate-strong earthquakes and showed variation features correlating to moderate-strong earthquakes occurred in the region and its surrounding areas. From the earthquake examples in Ningxia region, we can make the conclusion that the method of natural orthogonal function expansion of earthquake energy stochastic field is an earthquake analysis and prediction method that is worth further exploration.

引文

马开玉,丁裕国,屠其璞,等.1993.气候统计原理与方法[M ].北京:气象出版社,277
    КазакевичДИ著.1971;章基嘉译.1974.随机函数论原理及其在水文气象学中的应用[M ].北京:科学出版社,245