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Year 2016
 
Vol 53, [01 - 2016]

Determination of geoid height and gravity anomaly from spherical harmonic coefficients

https://tapchi.humg.edu.vn/en/archives?article=538

  • Affiliations:

    1 Trường Đại học Mỏ - Địa chất;
    2 Công ty cổ phần Dịch vụ và thương mại 568

  • Received: 3rd-Dec-2015
  • Revised: 16th-Jan-2016
  • Accepted: 30th-Jan-2016
  • Online: 30th-Jan-2016
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Abstract:

The article presents the detailed mathematical formulas to calculate the geoid height and gravity anomaly by using spherical harmonic coefficients and established a computer program ״Geomat2015״ by Matlab programming language. The geoid heights and gravity anomalies have been calculated by using spherical harmonic coefficients of the Earth Gravitational Model EGM2008 in Gulf of Tonkin-Vietnam is represented in the form of grid squares of size (6 ' x 6 ') with 874 points grid. The results are compared with the results provided by The International Centre for Global Earth Models (ICGEM) shows the correctness of calculation results with statistics: The maximum, minimum deviation and standard deviation of the geoid heights being 0.0082m; -0.0030m and ± 0.0015m respectively and gravity anomalies being 0.0588mgal; -0.2607 mgal and ±0.0264mgal respectively.

How to Cite
Nguyen, S.Van and Pham, T.Van 2016. Determination of geoid height and gravity anomaly from spherical harmonic coefficients (in Vietnamese). Journal of Mining and Earth Sciences. 53 (Jan, 2016).