A new combined quasigeoid model in Tierra del Fuego
DOI:
https://doi.org/10.1344/GeologicaActa2014.12.3.4Keywords:
Tierra del Fuego, Quasigeoid, GPS/levelling, Gravity, Equivalent source technique.Abstract
This work focuses on the development of a combined quasigeoid model for Tierra del Fuego province. The Equivalent Source Technique (EST) is applied together with the remove-compute-restore technique in order to combine gravity and GPS/levelling observations and to obtain a quasigeoid model. This model features an improved accuracy in relation to previous models. A discussion about the geodetic reference system is also presented. Geodetic coordinates of all stations used were transformed to TDF08 to be in accordance with the new geodetic reference frame of Argentina. After a cross validation procedure it is determined that a 5cm (r.m.s.) quasigeoid model has been achieved for the major part of the province, fulfilling the requirements for its practical use. New Global Geopotential Models (GGM) are introduced in the discussion, particularly the EGM2008 which is used for evaluation purposes. It shows a 9cm agreement after its evaluation on the levelling lines.
References
Bajracharya, S., 2003. Terrain Effects on Geoid Determination. University of Calgary, 114pp.
Dampney, C.N.G., 1969. The equivalent source technique. Geophysics, 34(1), 39-53. DOI: 10.1190/1.1439996
Del Cogliano, D., 2006. Modelado del Geoide con GPS y Gravimetría. Caracterización de la Estructura Geológica de Tandil. Doctoral Thesis. Argentina, Universidad Nacional de Rosario (Argentina), 103pp.
Del Cogliano, D., Hormaechea, J.L., Perdomo, R., Galbán, F., Lauría, E., Ramos, G., 2001. Geoid Study in Tierra del Fuego. International Asociation of GeodesySymposia, Vertical Reference Systems, 124, 192-193. DOI: 10.1007/978-3-662-04683-8_36
Del Cogliano, D., Lauría, E., Perdomo, R., D’Onofrio, E., Hermosilla, A., Maturana, R., Hormaechea, J.L., Rubio, W., Cimbaro, S., Mendoza, L., 2004. Aporte a la definición del Sistema Vertical en el extremo sur de América del Sur. In: Tópicos de Geociencias. Editorial Fundación Universitaria, San Juan, 215-229.
Del Cogliano, D., Dietrich, R., Richter, A., Perdomo, R., Hormaechea, J.L., Liebsch, G., Fritsche, M., 2007. Regional geoid determination in Tierra del Fuego including GPS/levelling. Geologica Acta, 5(4), 315-322.
Farr, T.G., Rosen, P.A., 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. Reviews of Geophysics, 45:RG200. DOI: 10.1029/2005RG000183
Featherstone, W., Kirby, J.F., 2000. The reduction of aliasing in gravity anomalies and geoid heights using digital terrain data. Geophysical Journal International, 141, 204-212. DOI: 10.1046/j.1365-246X.2000.00082.x
Ferland, R., 2006. IGSMAIL-5447: Proposed IGS05 Realization. Available online at: http://igscb.jpl.nasa.gov/mail/igsmail/2006/msg00170.html, accessed on 10 May, 2010.
Font, G., Tocho, C., 2001. Preliminary Geoid Model for Tierra del Fuego. International Symposium on Vertical Reference Systems, 124,194-196. DOI: 10.1007/978-3-662-04683-8_37
Forsberg, R., 1984. A Study of Terrain Reductions, Density Anomalies and Geophysical Inversion Methods in Gravity Field Modelling. The Ohio State University, Reports of the Department of Geodetic Science and Surveying, 355, 116-126.
Förste, C., Schmidt, R., Stubenvoll, R., Flechtner, F., Meyer, U., König, R., Neumayer, K.-H., Biancale, R., Lemoine, J.-M., Bruinsma, S., Loyer, S., Barthelmes, F., Esselborn, S., 2008. The GeoForschungsZentrum Potsdam/Groupe de Recherche de Gèodésie Spatiale satellite-only and combined gravity field models: EIGEN-GL04S1 and EIGEN-GL04C. Journal of Geodesy, 82, 331-346. DOI: 10.1007/s00190-007-0183-8
Fotopoulos, G., 2003. An analysis on the optimal combination of geoid, orthometric and ellipsoidal height data. Doctoral Thesis. Department of Geomatics Engineering, University of Calgary, Report 20185, 75-76.
Gomez, M.E., Del Cogliano, D., Perdomo, R., 2013. Geoid modelling in the area of Fagnano Lake, Tierra del Fuego (Argentina): Insights from mean lake-level observations and reduced gravity data. Acta Geodaetica et Geophysica, 48(2):139-147. DOI: 10.1007/s40328-012-0009-x
Guspí, F., Introcaso, A., Introcaso, B., 2004. Gravity-enhanced representation of measured geoid undulations using equivalent sources. Geophysical Journal International, 158, 1-8. DOI: 10.1111/j.1365-246X.2004.02364.x
Heiskanen, W., Moritz, H., 1967. Physical Geodesy. San Francisco and Londres, Freeman, 364pp.
Kirby, J.F., Featherstone, W.E., 2001. Anomalously large gradients in the “GEODATA 9 SECOND” Digital Elevation Model of Australia, and their effects on gravimetric terrain corrections. Cartography, 30(1):1-10.
Lodolo, E., Lippai, H., Tassone, A., Zanolla, C., Menichetti, M., Hormaechea, J.L., 2007. Gravity map of the Isla Grande de Tierra del Fuego, and morphology of Lago Fagnano. Geologica Acta, 5(4), 307-314.
Mc Carthy, D., Petit, G., 2003. IERS Conventions 2003. International Earth Rotation and Reference System Service, Technical Note 32, Verlag des Bundesamts für Kartographie und Geodäsie, Frankfurt am Main, 127pp.
Mendoza, L., 2008. Densificación del Marco de Referencia Terrestre ITRF y determinación de movimientos de la corteza en la Tierra del Fuego. Resultados del reprocesamiento de 14 años de observaciones GPS. Doctoral Thesis. Argentina, Universidad Nacional de La Plata, 151pp.
Pavlis, N.K., Holmes, S.A., Kenyon, S.C., Factor, J.K., 2012. The development and evaluation of the earth gravitational model 2008 (EGM2008). Journal of Geophysical Research 117:B04406. DOI: 10.1029/2011JB0089
Reigber, C., Schwintzer, P., Stubenvoll, R., Schmidt, R., Flechtner, F., Meyer, U., Knig, R., Neumayer, H., Förste, C., Barthelmes, F., Zhu, S.Y., Balmino, G., Biancale, R., Lemoine, J.M., Meixner, H., Raimondo, J.C., 2006. A High Resolution Global Gravity Field Model Combining CHAMP and GRACE Satellite Mission and Surface Gravity Data: EIGENCG01C. GeoForschungsZentrum, Scientific Technical Report, 1-12.
Sanchez, L., 2003. Determinación de la superficie vertical de referencia para Colombia. Degree Thesis. Dresden, Technische Universität Dresden, 106pp.
Sanchez, L., 2005. Sistema de referencia geocéntrico para las Américas: report of the SIRGAS working group III (vertical datum), presented at the SIRGAS General meeting held in Caracas, Venezuela, November 17-18, 2005.
Tocho, C., 2006. Geoide gravimétrico para la república Argentina. Doctoral Thesis. Universidad Nacional de La Plata, 200pp.
Wessel, P., Smith, W.H.F., 2012. The Generic Mapping Tools Technical Reference and Cookbook, Version 4.5.8.
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