A GPS-Supported Gravity Survey in the Amazon of Ecuador |
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| Authors: | Mamadou Balde Jeremy Fishman Carlos L V Aiken Mohamed Abdel-Salam Mauricio F de la Fuente |
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| Institution: | (1) University of Texas at Dallas, US;(2) Geociencias Aplicadas SA, Mexico City, Mexico, MX |
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| Abstract: | The growing importance and effectiveness of the Global Positioning System (GPS) in positioning geophysical surveys is now
well established. In Ecuador's Amazon basin the use of GPS was the determining factor in the successful completion of a gravity
survey carried out in 1994. Over 500 gravity stations, spaced from 1 to 5 km apart and positioned by GPS, were collected in
the jungle environment in the country's southeast, where the preexisting data, of variable and unknown quality, were mostly
confined to areas along the major rivers. This station densification, which includes the reoccupation of selected points,
contributed to increase the gravity coverage; it also allowed us to evaluate and correct 1100 preexisting data points in the
area, so that the different surveys can be merged. The composite data set is used for a geologic analysis of the study area,
where previously unknown structures are discovered. ? 1999 John Wiley & Sons, Inc. |
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