| 宁夏及邻区地震活动能量场时空变化特征 |
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| 引用本文： | 罗国富,屠泓为,许晓庆,马禾青,杨明芝.宁夏及邻区地震活动能量场时空变化特征[J].高原地震,2011,23(3):13-18. |
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| 作者姓名： | 罗国富 屠泓为 许晓庆 马禾青 杨明芝 |
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| 作者单位： | 1. 宁夏回族自治区地震局,宁夏银川,750001
2. 青海省地震局,青海西宁,810001 |
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| 基金项目： | 宁夏自然科学基金资助项目(NZl0206); 2011年震情跟踪合同制定向工作任务(2011020111) |
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| 摘 要： | 运用随机函数理论,将宁夏及邻区地震活动能量场看作时间和空间的随机函数,用自然正交函数展开方法,系统研究宁夏及邻区主要典型能量场的时间权重系数变化曲线以及典型能量场的空间等值线图。结果发现,目标曲线较大幅度的升、降变化预示了可能发生中强地震的时间段,而等值线图的高值变化（危险区）对应了可能发生中强地震的区域。
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| 关 键 词： | 地震能量场 随机函数 自然正交展开 时空分布 |
CHARACTERISTICS OF SPACE-TIME DISTRIBUTION IN EARTHQUAKE ENERGY FIELD IN NINGXIA AND ITS NEIGHBORING REGIONS |
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| LUO Guofu,TU Hongwei,XU Xiaoqing,MA Heqing,YANG Mingzhi.CHARACTERISTICS OF SPACE-TIME DISTRIBUTION IN EARTHQUAKE ENERGY FIELD IN NINGXIA AND ITS NEIGHBORING REGIONS[J].Plateau Earthquake Research,2011,23(3):13-18. |
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| Authors: | LUO Guofu TU Hongwei XU Xiaoqing MA Heqing YANG Mingzhi |
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| Institution: | LUO Guofu1,TU Hongwei2,XU Xiaoqing1,MA Heqing1,YANG Mingzhi1 (1.Earthquake Administration of Ningxia Hui Autonomous Region,Yinchuan 750001,China,2.Earthquake Administration of Qinghai Province,Xining 810001,China) |
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| Abstract: | Based on the random function theory,and taking seismic energy field of the Ningxia and its neighboring regions as the random function of space and time,the time weightcoefficients and the spatial isogram of typical fields in the seismic region are studied by the method of natural orthogonal function expansion.The results show that curves of these values had upward and downward changes of large amplitudes with the time which may forecast the future moderate-strong earthquakes,and the high-values of isogram m... |
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| Keywords: | Earthquake energy field Random function Natural orthogonal function expansion Space-time distribution |
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