USGS/Cascades Volcano Observatory, Vancouver, Washington
Ecuador Volcanoes -
Miscellaneous Images
-
[Image,305K,GIF]
Global Positioning System (GPS) receiver at Cotopaxi Volcano, Ecuador. GPS uses data transmitted by
orbiting satellites to locate points on the ground. The USGS has made baseline GPS measurements at several volcanoes in
the United States and in Latin America. In the event of an awakening of one of these volcanoes, GPS receivers would be set
up at these points again to determine whether or not measurable deformation had occurred and to monitor for precursory
deformation that might herald an eruption.
-- USGS Photo by J. W. Ewert
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03/25/02, Lyn Topinka