| 不同参考面块体应变计算公式的对比分析 |
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| 引用本文： | 武艳强,江在森,杨国华.不同参考面块体应变计算公式的对比分析[J].地震研究,2009,32(4). |
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| 作者姓名： | 武艳强 江在森 杨国华 |
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| 作者单位： | 1. 中国地震局地震预测研究所,北京,100036
2. 中国地震局第一监测中心,天津,300180 |
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| 基金项目： | 中国地震局地震预测研究所基本科研业务专项(02092401);;国家科技支撑计划重点项目(2006BAC01B02-02-02);;国家科技支撑计划重点项目(2006BAC01B03-01-01)资助 |
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| 摘 要： | 通过对不同块体应变计算公式的分析,利用模拟数据作为输入、采用经典平差方法求解应变参数并评定精度,进而对比不同参考面块体应变计算公式的差异。同时对小样本和大样本模拟数据应变计算结果进行统计分析。结果表明,平面公式与球面公式计算结果的差异与计算区域的大小有关,由投影误差决定,与点位的纬度分布没有必然的联系。因此,在小区域进行应变计算不会因为公式不同而导致结果的系统性差异。
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| 关 键 词： | 高斯投影 兰勃脱投影 测量平差 模拟数据 差异统计 块体应变 |
The comparative analysis of block strain calculation formulas based on different reference surfaces |
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| WU Yan-qiang,JIANG Zai-sen,YANG Guo-hua.The comparative analysis of block strain calculation formulas based on different reference surfaces[J].Journal of Seismological Research,2009,32(4). |
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| Authors: | WU Yan-qiang JIANG Zai-sen YANG Guo-hua |
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| Institution: | 1.Institute of Earthquake Prediction;CEA;Beijing 100036;China;2.First Crustal Monitoring and Application Center;Tianjin 300180;China |
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| Abstract: | On the analysis of the different block strain calculation formulas,the classic adjust method is used to calculate the strain parameters and their errors using simulation data,and then the difference of these formulas based on different reference surfaces are compared.In this paper,the statistics results are analyzed based on the simulation data of small samples and large samples,and the results reveal the outcomes of these formulas are identical in small area.Their differences are related to the area of reg... |
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| Keywords: | Gauss projection Lambert projection survey adjustment simulation data difference statistics block strain |
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