Tierra del Fuego
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Authors: M.E. Gomez, et al.
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Created: 2014
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Resp: M.E. Gomez
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Description:
This is a combined quasigeoid (gravimetric/geometric) model for almost the whole
province of Tierra del Fuego, computed by means of the Equivalent Source Technique (EST) and
the remove-restore technique. The geodetic reference frame is TDF08. The EIGEN-GL04c global
gravity model up to degree and order 200 is used to remove the long wavelength part of the spectrum,
while the residual terrain correction is based on the SRTM3 digital elevation model. The integration
of gravimetric and GPS/levelling data for the computation of the quasi geoid model is performed by
EST, which is basically an inverse gravimetric problem for the estimation of a proper set of point
masses. A cross-validation procedure over a set of height anomalies shows a 5 cm error r.m.s. for
most of the Argentine part of the island, with larger errors in the Chilean side (up to about 20 cm).
The model is here provided with a spatial resolution of 1.5 km.
References:
M.E. Gomez, D. Del Cogliano, R. Perdomo, J.L. Hormaechea (2014). A new combined quasigeoid model in
Tierra del Fuego. Geologica Acta, 12(3), pp. 219-226. DOI: 10.1344/GeologicaActa2014.12.3.4
Web of Science ID:
DRCI:DATA2018029012462785
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