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Yellowstone Continuous GPS Monitoring Images

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Image, click to enlarge [Image,52K,JPG]
White Lake GPS monument.
-- USGS Photo by D. Dzurisin, September 1999
Image, click to enlarge [Image,54K,JPG]
White Lake instrument enclosure, including Trimble 4000SSi receiver, FreeWave radio modem, timer to turn modem on and off once/day, and lightning protection.
-- USGS Photo by D. Dzurisin, September 1999
Image, click to enlarge [Image,82K,JPG]
White Lake solar panel tower and battery enclosure (partly buried culvert section, lower left).
-- USGS Photo by D. Dzurisin, September 1999
Image, click to enlarge [Image,75K,JPG]
White Lake communications antenna mounted in tree to reduce visual impact.
-- USGS Photo by D. Dzurisin, September 1999
Image, click to enlarge [Image,85K,JPG]
Hayden Valley GPS monument.
-- USGS Photo by D. Dzurisin, September 1999
Image, click to enlarge [Image,71K,JPG]
Hayden Valley instrument enclosure, solar panels, communications antenna, and battery enclosure. Monument is barely visible in the distance, near bottom of channel midway between worker and instrument enclosure (shoulder level, directly behind partly buried battery enclosure).
-- USGS Photo by D. Dzurisin, September 1999

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03/25/02, Lyn Topinka