| 利用大陆均衡理论研究河西地区地壳的稳定性 |
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| 引用本文： | 郭树松,祝意青,刘芳.利用大陆均衡理论研究河西地区地壳的稳定性[J].大地测量与地球动力学,2011,31(3):38-41. |
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| 作者姓名： | 郭树松 祝意青 刘芳 |
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| 作者单位： | 1)中国地震局第二监测中心，西安 710054;2)中国科学院测量与地球物理研究所动力大地测量学重点实验室，武汉 430077 |
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| 基金项目： | 国家自然科学基金(40874035) |
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| 摘 要： | 根据大陆均衡理论,对由艾里(Airy)大陆均衡模型计算的理论均衡地壳厚度(D)和实际布格重力异常反演得到的地壳厚度(M)进行比较,探讨北祁连河西地区的地壳均衡状态.结果表明,该地区理论大陆均衡地壳厚度均大于实际地壳厚度,地壳处于不均衡状态.
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| 关 键 词： | 河西地区 地壳结构 布格异常 垂直形变 重力均衡 |
RESEARCH ON STABILITY OF CRUST IN HEXI AREA BASED ON CRUSTAL GRAVITY ISOSTASY THEORY |
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| Guo Shusong,Zhu Yiqing,Liu Fang.RESEARCH ON STABILITY OF CRUST IN HEXI AREA BASED ON CRUSTAL GRAVITY ISOSTASY THEORY[J].Journal of Geodesy and Geodynamics,2011,31(3):38-41. |
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| Authors: | Guo Shusong Zhu Yiqing Liu Fang |
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| Institution: | Guo Shusong1),Zhu Yiqing1,2) and Liu Fang1)(1)Second Crust Monitoring and Application Center,CEA,Xi'an 7100542)Institute of Geodesy and Geophysics,Chinese Academy of Sciences,Wuhan 430077) |
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| Abstract: | On the basis of crustal gravity isostasy theory,the theoretic isostatic crustal thickness(D) with Airy's isostatic model in Hexi area was computed.In the same time,real crustal thickness(M) from the Bouguer gravity data was inverted,and then compared these two thicknesses with each other for researching crustal isostatic stability.The results indicate that the value D is generally larger than the value M and it means that the crust is in a monisostatic state. |
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| Keywords: | Hexi area crustal structure Bouguer anomaly vertical deformation effect of gravity isostasy |
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