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| 引用本文： | 王伟,李姗姗,马彪,高新兵.���ھ������۹�������ƽ���ռ������쳣�����о�[J].大地测量与地球动力学,2013,33(4):146-150. |
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| 作者姓名： | 王伟 李姗姗 马彪 高新兵 |
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| 作者单位： | 信息工程大学地理空间信息学院,郑州,450052 |
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| 摘 要： | ?о?????Airy-Heiskanen????????????????????????????????????????ο????????????????????????????????????????????????????????????????????????????????????????о??????????????????????????????????????????????????????????????????????????????EGM2008??????????????????????????????????????????????????????????????ж?????????????÷?????????????????????????????????????????????????????????????????????????????????????????
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| 关 键 词： | Airy-Heiskanen??????? ??????? ???θ??? ???????????? ??? |
A METHOD FOR ESTABLISHING MEAN FREE-AIR GRAVITY ANOMALY BASED ON ISOSTATIC THEORY |
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| Wang Wei;Li Shanshan;Ma Biao;Gao Xinbing.A METHOD FOR ESTABLISHING MEAN FREE-AIR GRAVITY ANOMALY BASED ON ISOSTATIC THEORY[J].Journal of Geodesy and Geodynamics,2013,33(4):146-150. |
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| Authors: | Wang Wei;Li Shanshan;Ma Biao;Gao Xinbing |
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| Institution: | Wang Wei;Li Shanshan;Ma Biao;Gao Xinbing;Institute of Geographical Space Information,Information Engineering University; |
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| Abstract: | The method of establishing the mean free??air gravity anomaly reference field with rare gravity data has been studied based on the Airy and Heiskanen isostatic theory. The numerical model of the mean free??air gravity anomalies has been established using the regional high??resolution topographic data; then for the problem that the systematic errors existed in the computational area, a few of gravimetric points have been chosen as constraint points in order to eliminate errors. Finally, the comparisons have been made among the gravity field model of EGM2008 and interpolation using separate points. As a result, the method could get better precision than two other methods as well as could reduce workloads in gravity measurement in the fields, the method is suitable for establishing the mean free??air gravity anomalies in difficult conditions. |
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| Keywords: | Airy-Heiskanen model isostatic correction topographic correction mean free-air gravity anomalies interpolation |
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