Search results for ‘J W Vallance’

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      Cover image for Lahar Hazards at Casita and San Cristobal Volcanoes, Nicaragua
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      Lahar Hazards at Casita and San Cristobal Volcanoes, Nicaragua

      J W Vallance

      The United States Geological Survey (USGS) is a scientific organization created in 1879, and is part of the U.S. government. Their scientists explore our environment and ecosystems, to determine the…

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      Cover image for Volcano Hazards at Fuego and Acatenango, Guatemala
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      Volcano Hazards at Fuego and Acatenango, Guatemala

      J W Vallance,S P Schilling

      The Fuego-Acatenango massif comprises a string of five or more volcanic vents along a north-south trend that is perpendicular to that of the Central American arc in Guatemala. From north…

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