| 佘山重力垂直梯度偏小的原因及其对大地测量的影响 |
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| 引用本文： | 张赤军.佘山重力垂直梯度偏小的原因及其对大地测量的影响[J].大地测量与地球动力学,1998(2). |
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| 作者姓名： | 张赤军 |
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| 作者单位： | 中国科学院测量与地球物理研究所 |
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| 基金项目： | 国家自然科学基金,中科院重点课题 |
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| 摘 要： | 根据推导的公式计算了由山体质量引起的梯度效应，结果与实测值甚为接近。分析了佘山重力垂直梯度偏小的原因，认为这是由于山体质量分布引起的。最后讨论了垂直梯度偏小对重力值的高度归算和大地水准面的影响。
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| 关 键 词： | 重力垂直梯度 绝对重力 大地水准面 |
CAUSE OF GRAVITY VERTICAL GRADIENT DECREMENT IN MT.SHA AND ITS INFLUENCE ON GEODESY |
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| Zhang Chijun.CAUSE OF GRAVITY VERTICAL GRADIENT DECREMENT IN MT.SHA AND ITS INFLUENCE ON GEODESY[J].Journal of Geodesy and Geodynamics,1998(2). |
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| Authors: | Zhang Chijun |
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| Abstract: | The cause of gravity vertical gradient decrement in Mt. Sa is analysed, and the gradient efficiency caused by the mountain mass is computed based on the devived formula, it is very mear to the practical value. Therefore it is considered that the decrement of gravity vertical gradient is caused by mountain mass distribution. Finally, the effect of vartical gradient decrement on the altitude reduction of gravity value and the geoid is discussed. |
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| Keywords: | vertical gradient gravity anomaly geodesy mountain mass |
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