A METHOD FOR ESTABLISHING MEAN FREE-AIR GRAVITY
ANOMALY BASED ON ISOSTATIC THEORY
Institute of Geographical Space Information, Information Engineering University, Zhengzhou 450052
Abstract The method of establishing the mean freeair gravity anomaly reference field with rare gravity data has been studied based on the Airy and Heiskanen isostatic theory. The numerical model of the mean freeair gravity anomalies has been established using the regional highresolution topographic data; then for the problem that the systematic errors existed in the computational area, a few of gravimetric points have been chosen as constraint points in order to eliminate errors. Finally, the comparisons have been made among the gravity field model of EGM2008 and interpolation using separate points. As a result, the method could get better precision than two other methods as well as could reduce workloads in gravity measurement in the fields, the method is suitable for establishing the mean freeair gravity anomalies in difficult conditions.
Key words :
Airy-Heiskanen model
isostatic correction
topographic correction
mean free-air gravity anomalies
interpolation
Received: 08 December 2012
Published: 16 August 2013
Cite this article:
Wang Wei,Li Shanshan,Ma Biao et al. A METHOD FOR ESTABLISHING MEAN FREE-AIR GRAVITY
ANOMALY BASED ON ISOSTATIC THEORY[J]. jgg, 2013, 33(4): 146-150.
Wang Wei,Li Shanshan,Ma Biao et al. A METHOD FOR ESTABLISHING MEAN FREE-AIR GRAVITY
ANOMALY BASED ON ISOSTATIC THEORY[J]. jgg, 2013, 33(4): 146-150.
URL:
http://www.jgg09.com/EN/ OR http://www.jgg09.com/EN/Y2013/V33/I4/146
[1]
GUO Xueli,WANG Lei. Research on Precise Ephemeris Design Method for the LEO Satellites Navigation Augmentation System [J]. jgg, 2021, 41(8): 800-805.
[2]
CHANG Ming,YIN Haiquan. The Analysis of Vertical Deformation Characteristics in Shanxi-Hebei-Inner Mongolia Area Using Precise Leveling Data [J]. jgg, 2020, 40(10): 1079-1083.
[3]
YANG Jiudong,WU Fenghua,WANG Wenjun. GPS Signal Acquisition Method: Based on Average Grouping and Superposition Correlation [J]. jgg, 2018, 38(8): 828-831.
[4]
CHEN Yuanhong,GUO Jiming,CHEN Pinxiang,HUANG Changjun. Reduction of Atmospheric Effects on InSAR Interferograms Based on CORS [J]. jgg, 2015, 35(6): 1026-1030.
[5]
ZHANG Pin,SHEN Chongyang,YANG Guangliang,ZHANG Xiaotong,CHEN Zhao. Vertical Accuracy Assessment of ASTER GDEM and Its Applicability
Analysis in Gravity Terrain Correction [J]. jgg, 2015, 35(2): 318-321.
[6]
RONG Min,ZHOU Wei. Study on Topography Correction based on Spherical Approximation [J]. jgg, 2015, 35(1): 58-61.
[7]
Pan Guorong,Wu Ting,Bai Yun. APPLICATION OF AUTOMATIC GUIDANCE PIPE-JACKING SYSTEM
IN THREE CURVED PIPE-JACKING ENGINEERING [J]. jgg, 2014, 34(4): 102-105.
[8]
. AN IMPROVED NETWORK RTK TROPOSPHERE DELAY ERROR
OF LINEAR INTERPOLATION MODEL [J]. jgg, 2013, 33(6): 90-93.
[9]
Yang Guangliang;Shen Chongyang;Sun Shaoan;Tan Hongbo;Xuan Songbai;and Li Zhejun;. STUDY ON GRAVITY ANOMALY OF PROFILE RIWOQE-YUSHU-MADUO [J]. , 2011, 31(5): 1-4.
[10]
Feng Wei ;Chen Xiangdong ;Wu Xing;and Ye Xiusong . INFLUENCE OF SPACE LATITUDE ON DIFFERENTIAL IONOSPHERIC GRID SYSTEM [J]. , 2011, 31(4): 135-138.
[11]
Wang Zengli ;and Wen Lin . A NEW TERRAIN CORRECTION METHOD [J]. , 2011, 31(3): 115-119.
[12]
Zhang Xingfu;and Wei Dehong. INTERPOLATION METHODS AND ACCURACY ANALYSIS BASED ON GRID QUASIGEOID MODEL [J]. , 2011, 31(1): 113-116.
[13]
Zhang Feng and Hao Jinming. INFLUENCE OF MISJUDGMENT FOR DOUBLE DIFFERENCE AMBIGUITIES BETWEEN REFERENCE STATIONS ON VRS OBSERVATIONS [J]. , 2010, 30(4): 151-155.
[14]
Ji Zhangjian;Yuan Yunbin ;and Sheng Chuanzhen;. GPS HEIGHT FITTING BASED ON CHAOS PARTICLE SWARM SUPPORT VECTOR MACHINE AND CONSIDERING EFFECT OF TERRAIN [J]. , 2010, 30(2): 95-98.
[15]
Qiu Lei ;Chen Yuanhong ;and Duan Yanxia . RESEARCH ON IONOSPHERIC DELAY MODELING TECHNOLOGY BASED ON GPS RTK NETWORK [J]. , 2010, 30(1): 56-60.