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2015 | Online First | Chapter

Verifying the Accuracy of Recent Global Geopotential Models in North-West Mozambique

Authors : M. S. Bos, M. Cordeiro, R. M. S. Fernandes, P. G. Almeida, W. Coetzee

Published in: International Association of Geodesy Symposia

Publisher: Springer International Publishing

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Abstract

Several high resolution global geopotential models have been published in recent years. Two of them are EGM2008 and EIGEN-6C2, which have accuracies on the order of 3–20 cm in Europe and Australia. However, part of this accuracy is related to the high number of gravity observations available in these areas. In Africa there are still many regions without terrestrial gravity observations such as north Mozambique. Using the results of a recent terrestrial gravity campaign in north-west Mozambique we conclude that the error of the EGM2008 and EIGEN-6C2 here is still on the order of ± 60 cm, which strongly limits their use for many scientific and technical applications.
Literature
go back to reference Barthelmes F (2013) Definition of functionals of the geopotential and their calculation from spherical harmonic models. Technical Report 09/02, Deutsches GeoForschungs Zentrum GFZ, Potsdam Barthelmes F (2013) Definition of functionals of the geopotential and their calculation from spherical harmonic models. Technical Report 09/02, Deutsches GeoForschungs Zentrum GFZ, Potsdam
go back to reference Claessens S, Featherstone W, Anjasmara I, Filmer M (2009) Is Australian data really validating EGM2008, or is EGM2008 just in/validating Australia data? Newton’s Bull 4:207–251 Claessens S, Featherstone W, Anjasmara I, Filmer M (2009) Is Australian data really validating EGM2008, or is EGM2008 just in/validating Australia data? Newton’s Bull 4:207–251
go back to reference Farr TG, Rosen PA, Caro E, Crippen R, Duren R, Hensley S, Kobrick M, Paller M, Rodriguez E, Roth L, Seal D, Shaffer S, Shimada J, Umland J, Werner M, Oskin M, Burbank D, Alsdorf D (2007) The shuttle radar topography mission. Rev Geophys 45:2004. doi:10.1029/2005RG000183CrossRef Farr TG, Rosen PA, Caro E, Crippen R, Duren R, Hensley S, Kobrick M, Paller M, Rodriguez E, Roth L, Seal D, Shaffer S, Shimada J, Umland J, Werner M, Oskin M, Burbank D, Alsdorf D (2007) The shuttle radar topography mission. Rev Geophys 45:2004. doi:10.1029/2005RG000183CrossRef
go back to reference Forsberg R (1993) Modelling the fine-structure of the geoid: methods, data requirements and some results. Surv Geophys 14:403–418. doi:10.1007/BF00690568CrossRef Forsberg R (1993) Modelling the fine-structure of the geoid: methods, data requirements and some results. Surv Geophys 14:403–418. doi:10.1007/BF00690568CrossRef
go back to reference Förste C, Bruinsma S, Flechtner F, Marty JC, Dahle C, Abrykosov O, Lemoine JM, Neumayer H, Barthelmes F, Biancale R, König R (2013) EIGEN-6C2—a new combined global gravity field model including GOCE data up to degree and order 1949 of GFZ Potsdam and GRGS Toulouse. In: EGU general assembly conference abstracts, vol 15, p 4077 Förste C, Bruinsma S, Flechtner F, Marty JC, Dahle C, Abrykosov O, Lemoine JM, Neumayer H, Barthelmes F, Biancale R, König R (2013) EIGEN-6C2—a new combined global gravity field model including GOCE data up to degree and order 1949 of GFZ Potsdam and GRGS Toulouse. In: EGU general assembly conference abstracts, vol 15, p 4077
go back to reference Knudsen P (1987) Estimation and modelling of the local empirical covariance function using gravity and satellite altimeter data. Bull Geod 61:145–160. doi:10.1007/BF02521264CrossRef Knudsen P (1987) Estimation and modelling of the local empirical covariance function using gravity and satellite altimeter data. Bull Geod 61:145–160. doi:10.1007/BF02521264CrossRef
go back to reference Moritz H (1972) Advanced least-squares methods. Technical Report 175, Ohio State University, Columbus Moritz H (1972) Advanced least-squares methods. Technical Report 175, Ohio State University, Columbus
go back to reference Moritz H (1978) Least-squares collocation. Rev Geophys Space Phys 16:421–430. doi:10.1029/RG016i003p00421CrossRef Moritz H (1978) Least-squares collocation. Rev Geophys Space Phys 16:421–430. doi:10.1029/RG016i003p00421CrossRef
go back to reference Pavlis NK, Holmes SA, Kenyon SC, Factor JK (2012) The development and evaluation of the Earth Gravitational Model 2008 (EGM2008). J Geophys Res 117:B04406. doi:10.1029/2011JB008916CrossRef Pavlis NK, Holmes SA, Kenyon SC, Factor JK (2012) The development and evaluation of the Earth Gravitational Model 2008 (EGM2008). J Geophys Res 117:B04406. doi:10.1029/2011JB008916CrossRef
go back to reference Press WH, Teukolsky SA, Vetterling WT, Flannery BP (1992) Numerical recipes in C: the art of scientific computing, 2nd edn. Cambridge University Press, New York. ISBN:0-521-43108-5 Press WH, Teukolsky SA, Vetterling WT, Flannery BP (1992) Numerical recipes in C: the art of scientific computing, 2nd edn. Cambridge University Press, New York. ISBN:0-521-43108-5
go back to reference Rapp RH (1997) Use of potential coefficient models for geoid undulation determinations using a spherical harmonic representation of the height anomaly/geoid undulation difference. J Geodesy 71:282–289. doi:10.1007/s001900050096CrossRef Rapp RH (1997) Use of potential coefficient models for geoid undulation determinations using a spherical harmonic representation of the height anomaly/geoid undulation difference. J Geodesy 71:282–289. doi:10.1007/s001900050096CrossRef
go back to reference Sansò F, Sideris MG (eds) (2013) Geoid determination, theory and methods. Springer, Berlin/Heidelberg Sansò F, Sideris MG (eds) (2013) Geoid determination, theory and methods. Springer, Berlin/Heidelberg
go back to reference Strykowski G, Forsberg R (2010) Testing EGM2008 on leveling data from Scandinavia, adjacent Baltic areas, and Greenland. Int Assoc Geod Symp 135(6):505–509CrossRef Strykowski G, Forsberg R (2010) Testing EGM2008 on leveling data from Scandinavia, adjacent Baltic areas, and Greenland. Int Assoc Geod Symp 135(6):505–509CrossRef
go back to reference Tscherning CC, Rapp RH (1974) Closed covariance expressions for gravity anomalies, geoid undulations, and deflections of the vertical implied by anomaly degree variance models. Technical Report 208, Ohio State University, Columbus Tscherning CC, Rapp RH (1974) Closed covariance expressions for gravity anomalies, geoid undulations, and deflections of the vertical implied by anomaly degree variance models. Technical Report 208, Ohio State University, Columbus
Metadata
Title
Verifying the Accuracy of Recent Global Geopotential Models in North-West Mozambique
Authors
M. S. Bos
M. Cordeiro
R. M. S. Fernandes
P. G. Almeida
W. Coetzee
Copyright Year
2015
DOI
https://doi.org/10.1007/1345_2015_102