Calculation and Analysis of Global-Scale Earth Gravity Field Parameters Based on EIGEN-5C Model

DOI

10.2991/978-2-494069-31-2_268How to use a DOI?

Keywords

Earth gravity field; Disturbance potential; Geoid height; Gravity anomaly; Gravitational disturbance; EIGEN-5C

Abstract

There are many calculation model schemes with practical value for calculating the critical parameters of the earth's gravity field. However, the research work of systematically using the EIGEN-5C model for global-scale inversion of the earth's gravity field needs to be supplemented. To solve the above problems, this study uses the 360-order EIGEN-5C model to calculate the four parameters of the earth’s gravity field: disturbance potential, geoid height, gravity anomaly, and gravity disturbance. This study first calculates the normalized associated Legendre function, reads the coefficients of the EIGEN-5C gravity field model, then calculates the normal gravity and converts the geodetic coordinate system into the spherical coordinate system. On this basis, the spherical harmonic series expansion of the gravity field parameters is carried out. Through experiments, it is found that the calculation process introduced in this study can better calculate and express the critical parameters of the global-scale earth's gravity field. The calculation results can sufficiently express the geophysical situation of the study area. This study systematically explains using the EIGEN-5C model to carry out the inversion and result in the expression of global-scale earth's gravity field parameters.

Copyright

© 2022 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Bolong Yu
PY  - 2022
DA  - 2022/12/29
TI  - Calculation and Analysis of Global-Scale Earth Gravity Field Parameters Based on EIGEN-5C Model
BT  - Proceedings of the 2022 6th International Seminar on Education, Management and Social Sciences (ISEMSS 2022)
PB  - Atlantis Press
SP  - 2274
EP  - 2279
SN  - 2352-5398
UR  - https://doi.org/10.2991/978-2-494069-31-2_268
DO  - 10.2991/978-2-494069-31-2_268
ID  - Yu2022
ER  -