相关平差在应变分析中的应用
APPLICATION OF THE CORRELATION ADJUSTMENT METHOD IN STRAIN ANALYSIS
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摘要: 研究了直接用多期重复大地测量观测资料求剪切应变速率的相关平差方法,简单地讨论了判断计算结果中反映形变信息的可靠性的标准,并对相关平差法与一般方法计算结果的差别进行了比较。通过几个地区的实际计算,认为在地震工作中,为探测大范围的地壳水平运动,迫切需要大幅度提高目前的大地测量精度。Abstract: In this paper, the correlation adjustment method for deducing shear strain rates directly from repeated geodetic data is studied. The criteria for reliability assessment of the calculated results of land deformation are briefly discussed, and the differences between the calculated results by the correlation adjustment method and that by conventional method compared. The results of actual calculation for several regions surveyed suggest that in order to monitor the horizontal crustal movements in large areas it is entirely necessary to improve the accuracy of geodetic survey to a high degree for seismological work.