从统计分析入手，研究了地形变资料求解地壳应变值的尺度相对性问题。

Using statistic analysis, the scale dependence of crustal strain value from crustal deformation data is studied.

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进一步利用GPS速度场计算华北地区GPS地壳应变率场及应变能密度变化率场。

Using the GPS velocity field, we estimate the annual accumulations of strain rate field and strain energy density field.

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根据昆仑山口西8.1级地震前后GPS测点的位移速率，用弹性模型公式计算了地壳应变参数。

Based on the velocities of GPS sites before and after the M8.1 Kunlunshan earthquake, the crustal strain parameters are calculated with the elastic model.

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