First GPS baseline results from the north Andes

Autor: Luis Espin, Fernandez Ch. Benjamin, Mora V. Jaime, Timothy H. Dixon, Anibal Salazai, Vernon Perdue, Leonard Leos, Jeffrey T. Freymueller, James L. Stowell, Ruth Neilan, M. Camargo Sergio, Ropain U. Clemente, James N. Kellogg
Rok vydání: 1990
Předmět:
Zdroj: Geophysical Research Letters. 17:211-214
ISSN: 0094-8276
DOI: 10.1029/gl017i003p00211
Popis: The CASA Uno GPS experiment (January-February 1988) has provided the first epoch baseline measurements for the study of plate motions and crustal deformation in and around the North Andes. Two dimensional horizontal baseline repeatabilities are as good as 5 parts in 10 to the 8th for short baselines (100-1000 km), and better than 3 parts in 10 to the 8th for long baselines (greater than 1000 km). Vertical repeatabilities are typically 4-6 cm, with a weak dependence on baseline length. The expected rate of plate convergence across the Colombia Trench is 6-8cm/yr, which should be detectable by the repeat experiment planned for 1991. Expected deformation rates within the North Andes are of the order of 1 cm/yr, which may be detectable with the 1991 experiment.
Databáze: OpenAIRE