Titlebook: Recent Geodetic and Gravimetric Research in Latin America; Symposium No. 111, V Wolfgang Torge,Alvaro González Fletcher,James G. T Conferen

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CHANT

枫树

The South American Gravity ProjectULIS). It was designed to help the long term exploration objectives of the oil industry by collecting all available public and proprietary gravity data for the South American continent and its margins. The land and marine point gravity data were converted to a uniform digital form and reprocessed to

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Tidal Gravity Measurements in Latin-America to carefully correct gravity and distance measurements. Absolute and field differential gravity determinations have now about the same precision, that is 10 microgals (1 .gal = 10. m s.) or better in some cases.

recession

Plate Motions and Active Crustal Deformation in the North Andean Region Measured with the Global Posal America and northern South America, a tectonically active area of complex interaction between the Nazca, Cocos, Caribbean and South American plates. Repeated geodetic measurements with the Global Positioning System (GPS) provide direct measurements of displacements due to active plate motions and

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The Project Corbas — Determination of Recent Crustal Movements in Costa Ricaed Panama Block (see Fig. 1). The project CorBas (Niemeier et al, 1990) was inaugurated to develop a geodetic network for Costa Rica by use at the Global Positioning System (GPS). Repeated measurements of this network should provide direct information on actual plate motions and intraplate deformati

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Recent Dynamic Activity of the Bransfield Rift: Potential Zone of High Natural Hazard in Antarcticaing Plio-Plesitocene to Recent times, extensional processes were dominant in Bransfield Strait; these resulted in the formation of a series of NE-trending normal faults, which are subparallel to the north-western margin of the Antarctic Peninsula and the opposite coast of the South Shetland Islands.

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Oration

Monitoring of Gravity Variations in the Southern Central Andes with six or more La-Coste Gravimeters used in parallel, were conducted. The total number of more than 2000 observations on about 60 sites is now analysed in view of time-dependent changes in gravity. In this paper we introduce the design of the network, give performance and results of single campai

Debrief

Datum Transformations for GPS Applications in South America designed to determine the transformation parameters between the World Geodetic System 1984 and the Provisional South American Datum 1956, and their spatial variation and to compare the results of this project with published transformation formulae.