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带控制点的三维密度界面反演方法
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  • 英文篇名:The inversion of three-dimensional density interface with control points
  • 作者:胡立天 ; 郝天珧
  • 英文作者:HU Li-tian;HAO Tian-yao;Institute of Geology and Geophysics,Chinese Academy of Sciences;University of Chinese Academy of Sciences;
  • 关键词:三维密度界面反演 ; 已知控制点
  • 英文关键词:three-dimensional inversion of density interface;;known control points
  • 中文刊名:地球物理学进展
  • 英文刊名:Progress in Geophysics
  • 机构:中国科学院地质与地球物理研究所;中国科学院大学;
  • 出版日期:2014-12-15
  • 出版单位:地球物理学进展
  • 年:2014
  • 期:06
  • 基金:国家油气重大专项(2011ZX05008-006-30);; 国土资源部海洋地质保障工程项目(GZH200900504);; 国家高技术研究发展计划(2009AA093401-02);; 国家自然科学基金(41074058、41210005、90814011)共同资助
  • 语种:中文;
  • 页:22-27
  • 页数:6
  • CN:11-2982/P
  • ISSN:1004-2903
  • 分类号:P631.1
摘要
利用重力资料反演密度界面对于研究盆地、区域构造和深部构造有着重要意义.但是密度基准面深度和界面密度差的不准确性降低了反演结果的可靠性.本文使用已知深度的控制点,在逐步迭代中计算出最合适的密度基准面深度和界面密度差,使反演结果和控制点拟合最好.理论模型和南海地区的莫霍反演结果表明本文方法可以计算出最合适的密度基准面深度和界面密度差,取得理想的反演结果.
        The inversion of density interface using gravity data has great values in basin research、regional tectonics and deep structure.However,the uncertainty of density datum plane and density contrast makes the inversion result unreliable.An inversion method of three-dimensional density interface with several known control points is presented in this paper.We calculate the datum plane and density contrast in each iteration to make the inversion result fit the control points best.The tests of synthetic model and south China sea gravity data prove that the method obtains suitable datum plane and density contrast and gets a good inversion result.
引文
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