Abstract
The Central and South America (CASA) GPS project aims at monitoring crustal deformations in the complex tectonic zone of the Caribbean, Cocos, Nazca and South American plate boundaries. Since 1988 several GPS campaigns have been carried out, unfortunately not always covering the whole area simultaneously.
Main emphasis is laid in this paper on the Caribbean-South American plate boundary. We present our first estimates of deformations derived from GPS observations acquired between 1988 and early 1997. Our analysis comprises all the data available in the Venezuelan part of CASA but includes also a number of stations in adjacent countries, mainly in Colombia. The main characteristics of the applied processing strategy is the simultaneous estimation of epoch positions and site velocities by defining the velocity components already on the observation equation level. The precision of the estimated horizontal velocity components varies between 0.15 and 0.55 mm depending on the number of occupations. The results do not indicate abrupt changes of motions at the Boconó — El Pilar fault, but suggest a smooth continuous crustal deformation.
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© 1998 Springer-Verlag Berlin Heidelberg
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Kaniuth, K. et al. (1998). Crustal Deformation along the Caribbean — South American Plate Boundary Derived From The Casa GPS Project. In: Forsberg, R., Feissel, M., Dietrich, R. (eds) Geodesy on the Move. International Association of Geodesy Symposia, vol 119. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-72245-5_66
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DOI: https://doi.org/10.1007/978-3-642-72245-5_66
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