| 地球重力模型及中国大陆重力场的计算 |
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| 引用本文： | 许惠平,刘万崧,Haagmans R H N.地球重力模型及中国大陆重力场的计算[J].吉林大学学报(地球科学版),2001,31(1):84-88. |
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| 作者姓名： | 许惠平 刘万崧 Haagmans R H N |
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| 作者单位： | 1. 吉林大学 地学信息系统研究所，吉林 长春 130026
2. Faculty of Civil Engineer ing and Geosciences, Delft University of Technology, Delft, 2629JA, The Net herlands |
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| 基金项目： | 高等学校博士学科点专项科研项目;1999018704; |
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| 摘 要： | 融多颗卫星数据、地面重力值和其它资料一起的地球重力模型EGM 96 ,为研究中国大陆的重力场及相关问题提供了一个高精度 36 0阶的球谐系数。在分析EGM 96的基础上 ,计算并简单解释了中国大陆的自由空气异常和布格重力异常。计算所得重力场的精度和分辨率大大高于常用的1∶140 0 0 0 0 0自由空气异常图及布格重力图
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| 关 键 词： | 地球重力模型 自由空气异常 布格重力异常 |
| 文章编号： | 1008-0058(2001)01-0084-05 |
| 修稿时间： | 2000年3月20日 |
THE EGM96 AND ITS CHINA GRAVITY CALCULATION |
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| XU Hui_ping ,Haagmans R H N ,Bruijne A J T de ,LIU Wan_song.THE EGM96 AND ITS CHINA GRAVITY CALCULATION[J].Journal of Jilin Unviersity:Earth Science Edition,2001,31(1):84-88. |
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| Authors: | XU Hui_ping Haagmans R H N Bruijne A J T de LIU Wan_song |
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| Institution: | XU Hui_ping 1,Haagmans R H N 2,Bruijne A J T de 2,LIU Wan_song 1 |
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| Abstract: | EGM96, which was mainly developed by NASA, NIMA and the OhioState University, i s a degree up to 360 spherical harmonic cofficients of earth’s gravitational po t ential model. This high accurate model was calculated from satellites data, whic h include altimetry data, tracking data, and so on. GPS data, 30′×30′ surfac e gra vity data, etc. The major advancements in EGM96 were the incorporation of all da ta into 360×360 geopotential solution, improved model accuracy, offered some i mp ortant by-products and a new calculation method for the high-degree solutions. I n this paper, we firstly introduced the earth gravity model-EGM96, then calculat ed and interpreted the free-air gravity anomaly of mainland of China using EGM96 . In addition, the digital topographic data was used to obtain Bouguer gravity a nomaly in the same area. The geological explain was made in the paper. |
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| Keywords: | earth gravity model(EGM) free-air gravity anomaly Bouguer gravity anomaly |
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