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EARTHQUAKE ›› 2013, Vol. 33 ›› Issue (3): 60-66.

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Analysis of Disturbance from Calculation Datum for the Regional Gravity Network of Shanxi Province

LI Zhen1, QIN Jian-zeng1, CHEN Shi2   

  1. 1. Geophysical Exploration Center, CEA, Zhengzhou 450002, China;
    2. Institute of Geophysics, CEA, Beijing 100081, China
  • Received:2012-07-02 Online:2013-07-31 Published:2020-09-28

Abstract: On the basis of fine processing of all the observation data of Shanxi regional gravity network, the stability of calculation datum in the classic indirect adjustment are studied. Least squares method are used to study the disturbance from calculation datum of Shanxi regional gravity network. After the disturbance from calculation datum is corrected, the evolution characteristics of dynamic gravity field changes in the seismogenic region become more obvious. Thus the disturbance from calculation datum must be calculated and considered when conventional gravity network data are processed and analyzed.

Key words: Gravity field, Classic indirect adjustment, Disturbance from calculation datum

CLC Number: