测绘学报 ›› 2015, Vol. 44 ›› Issue (6): 609-615.doi: 10.11947/j.AGCS.2015.20140015

• 大地测量学与导航 • 上一篇    下一篇

Moho面扰动重力梯度信息的提取

叶周润1,2, 柳林涛2, 梁星辉2,3   

  1. 1. 中国科学院大学, 北京 100049;
    2. 中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室, 湖北 武汉 430077;
    3. 地理信息工程国家重点实验室, 陕西 西安 710054
  • 收稿日期:2014-01-16 修回日期:2015-03-15 出版日期:2015-06-20 发布日期:2015-07-28
  • 作者简介:叶周润(1984—),男,博士生,研究方向为重力梯度。E-mail: yezhourun329@hotmail.com
  • 基金资助:
    国家自然科学基金(41304023);国家重大科学仪器设备开发专项(2011YQ120045); 地理信息工程国家重点实验室开放基金(SKLGIE2013-M-1-2); 武汉大学地球空间环境与大地测量教育部重点实验室测绘基础研究基金(13-01-02)

The Signal Extraction of Gravity Gradient Disturbance on Moho

YE Zhourun1,2, LIU Lintao2, LIANG Xinghui2,3   

  1. 1. University of Chinese Academy of Sciences, Beijing 100049, China;
    2. State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, CAS, Wuhan 430077, China;
    3. State Key Laboratory of National Geographic Information Engineering, Xi'an 710054, China
  • Received:2014-01-16 Revised:2015-03-15 Online:2015-06-20 Published:2015-07-28
  • Supported by:
    The National Natural Science Foundation of China (No. 41304023);National Special Fund Project of Major Scientific Instrument and Equipment Development(No. 2011YQ120045);Open Foundation of State Key Laboratory of Geographic Information and Engineering(No. SKLGIE2013-M-1-2);Basic Geodetic Research Foundation of Education Ministry's Key Laboratory on Geospace Environment and Geodesy of Wuhan University(No. 13-01-02)

摘要: 在运用重力和重力梯度资料反演Moho面时,关键步骤之一即是从原始测量信号精确提取只包含该层面单一密度信息的扰动(异常)值。本文主要工作有:①为减小GEMMA Moho团队的点质量模型计算误差而采用正演精度更高的空间域Tesseroid单元体和频谱域球谐分析与综合方法,并对这两种方法进行了结果对比;②如何合理利用地壳先验模型资料。本文中最后提供了基于GOCO03S模型可以用于后续Moho面反演的重力梯度主对角线分量的全球扰动值,并对所有试验数据进行了讨论和分析。

关键词: GOCE, Moho, 重力梯度提取

Abstract: Using gravity / gravity gradient data for Moho inversion, one of the key steps is how to extract the Moho information data precisely from raw measurements. Here we mainly discussed:①In order to eliminate the error of point mass model used by GEMMA Moho research team, we choose Tesseroid in space domain and harmonic analysis and synthesis method in frequency domain; ②The reasonable use of priori crustal model. Based on GOCO03S model, we provide the gravity gradient disturbing results of three main components which are for Moho inversion. Finally, all experiment results are discussed and analyzed in this paper.

Key words: GOCE, Moho, extraction of gravity gradient

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