16Sep 2019

THE DEVELOPMENT AND VALIDATION OF AN EGM2008 GEOID MODEL FOR SENEGAL.

  • Laboratory of Sciences and Technology of Water and Environment (LaSTEE), Polytechnic School of Thies BPA 10 Thies, Senegal.
  • University Alioune DIOP of Bambey, Higher Institute of Agricultural and Rural Training (ISFAR) PO Box 54, Bambey, Senegal.
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In Senegal, the use of GPS Global Navigation Satellite Systems (GNSS) technology to give a planimetric position on the WGS84 ellipsoid has increased considerably in recent decades. However, the problem of altitude posed by this technology presents the engineers a complex obstacle, since it is necessary to determine with precision the orthometric position of an object on the surface of the Earth, in particular within the framework of the projects of equipment engineering of the territory or geophysical work. Indeed, a precise determination of the orthometric height obtained most often by leveling is fundamental for a good execution of the projects of civil engineering, public works and territorial development. The use of several altitude reference surfaces (IGN, NGAO, NGS) further complicates the engineers' task thus increasing the risk of costly errors and biases in the conduct of public works and civil engineering. The solution to this problem of precision is the development of a local geoid model for Senegal adapted to the EGM2008 model, which remains a major development in the modeling of Earth's gravity and geoid.


  1. Pavlis, n. K., holmes, s. A., kenyon, s. C., & factor, j. K., 2012. The development andevaluation of the earth gravitational model 2008 (egm2008), journal of geophysicalresearch: solid earth, 117 (b4), 13?18.
  2. Odera, p.a., fukuda, y. And kuroishi, y., 2012. A high-resolution gravimetric geoid model for japan from egm2008 and local gravity data. Earth planets space, vol. 64, no. 5, pp. 361?368, doi: 10.5047/eps.2011.11.004.
  3. Griffon-monet a., 2013. La g?od?sieappliqu?e aux grands projetsd'infrastructureslin?aires ? l'?tranger. M?moired?ing?nieur, insa de strasbourg. 108p.
  4. Ssengendo r., sj?bergl.e., gidudu a., 2011. Evaluation of egm08 in uganda: preliminary results. Conference paper. The first conference on advances in geomatics research.
  5. Zahra i., 2016. D?termination de l?exactitude d?un g?o?degravim?trique. Th?se de doctoratenastrophysique [astro-ph]. Pslresearch university, 2016. Fran?ais. <nnt : 2016psleo002>. <tel-01431701>
  6. Sickle j. V., 2008. Gps for land surveyors (3 ?d.). California: crc press.
  7. Heiskanen, w. A. And moritz, h., 1967. Physical geodesy. W. H. Freeman and company, san francisco.

[Alassane Ba, Ababacar Fall, Papa Babacar Diop Thioune and El Hadji Bamba Diaw. (2019); THE DEVELOPMENT AND VALIDATION OF AN EGM2008 GEOID MODEL FOR SENEGAL. Int. J. of Adv. Res. 7 (Sep). 750-755] (ISSN 2320-5407). www.journalijar.com


El Hadji Bamba DIAW
Ecole Polytechnique de Thiès

DOI:


Article DOI: 10.21474/IJAR01/9724      
DOI URL: https://dx.doi.org/10.21474/IJAR01/9724