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- 2018
大气负荷对区域地壳形变和重力变化的影响分析
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Abstract:
在高精度大地测量观测数据处理和相关地球物理解释中，大气负荷由于影响较大，需要考虑。利用全球大气模型和区域气象站气压数据，采用移去恢复方法和球谐分析方法，计算了三峡地区大气负荷对地壳形变和重力变化的影响。提供了一种利用局部气压数据改善该区域大气负荷影响变化计算效果的合理算法，提高局部气压数据和全球模型数据利用的合理性和准确性。研究发现，大气负荷对垂直形变的影响在空间分布上中长波占优，在三峡地区的年变化幅度大于20 mm，对地面重力变化影响的年变化幅度一般不超过10 μGal，对水平形变影响较小
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