The effectiveness of residual terrain model correction in the gravity anomaly interpolation
DOI:
https://doi.org/10.5281/zenodo.14302202Keywords:
Residual terrain model, Gravity anomaly, Interpolation, Central Region of VietnamAbstract
The purpose of this study is to evaluate the effectiveness of residual terrain model (RTM) correction in the gravity anomaly interpolation. To evaluate, after removing the long wavelength gravity anomaly by the global Earth Gravitational Model and correcting RTM to gravity anomaly data, the interpolation is performed using the Collocation method according to 2 options: (1) with RTM correction and (2) without RTM correction. The interpolated result is compared with known values to assess accuracy. The experiment was conducted in the Central Region of Vietnam with 9871 calculated points and 1060 test points. The experimental results show that: After RTM correcting, the gravity anomaly model is smoother and less variable; The accuracy of gravity anomaly interpolation increases; The Root Mean Square deviation (RMS) decreases by 1.306 mGal, from 4.559 mGal to 3.252 mGal. Thus, RTM correcting before interpolating gravity anomalies is necessary and effective.
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[1] Forsberg R. and C. C. Tsherning, The use of height data in gravity field approximation by collocation , Journal of Geophysical Research, vol. 86, No. B9, pages 7843-7854, September 10, 1981.
[2] anomalies and geophysical inversion methods in gravity field modelling , Reports of the Department of Geodetic Science and Surveying, The Ohio state University, 1984.
[3] oid Model-2020 (TG-20) , Bollettino di Geofisica Teorica ed Applicata, May 2021. DOI: https://doi.org/10.4430/bgta0346.
[4] Huang J. and Véronneau M., "Canadian gravimetric geoid model 2010", Journal of Geodesy. 87(8), pp. 771-790, 2013.
[5] t s v hi i c a tr a v Nhà xu t b n khoa h c và k thu t, Hà N i, 2018.
[6] Nguy nh d k t h p các d li u m t và v tinh, áp dng cho khu v c mi n Trung Vi t Nam Lu n án ti thu ng i h c M - a ch t, 2023.
[7] Nguy u qu c a vi c s d ng tr ng l t toàn cu trong n ng tr ng l c c c b b Tp chí Khoa h c và Bn , vol. 57, tr 1 8, 2023. doi: https://doi.org/10.54491/jgac.2023.57.690.
[8] Andersen O. and Knudsen P., "The DTU17 global marine gravity field: First validation results", Fiducial Reference Measurements for Altimetry, Springer, pp. 83-87, 2019.
[9] Farr T.G., Rosen P.A., Caro E., Crippen R., Duren R., Hensley S., Kobrick M., Paller M., Rodriguez E. and Roth L., "The shuttle radar topography mission", Reviews of geophysics, vol. 45 no. 2, 2007.
[10] E. Sinem Ince, Franz Barthelmes, Sven Reißland, Kirsten Elger, Christoph Förste, Frank Flechtner - 15 years of successful collection and distribution of global Earth Syst. Sci. Data, p. 647-674, vol. 11, 2019 doi: https://doi.org/10.5194/essd-11-647-2019.
[11] Bernhard Hofmann-ISBN-10 3-211-23548-1 Springer Wien New York, ISBN-13 978-3-211-23584-3 Springer Wien New York, 2005.
[12] a v Matxcova (ti ng nga), 2010.
[13] Nguy nh các hàm hi ng tr ng l c bng s li u tinh s d Tp chí khoa h c k thu t M a Ch t, s 41, tr 48 51, 2013.
[14] McKean J. W. and Sheather S. J. Statistic, NonpaNew York: Academic Press, pp. 891-914, 2003.
[15] Cambridge university press, Cambridge The Art of Scientific Computing, 1986.
[16] Nielsen J., Tscherning C.C., Jansson T.R. and Forsberg R., "Development and user testing of a Python interface to the GRAVSOFT gravity field programs", Geodesy for Planet Earth, Springer, pp. 443-449, 2012.
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