FIELD STUDY OF VARIATION IN CHARACTERISTICS OF SEISMIC NOISE AND SIGNALS WITH GEOLOGIC AND GEOGRAPHIC ENVIRONMENT Open PDF Document Details Document Type Technical Report Publication Date Jan 15, 1963 Accession Number AD0296939 Entities People J.n. Griffin Tags Communities of Interest Advanced Electronics Energy and Power Technologies DTIC Thesaurus Topics Air Force Environment Forests Frequency Geography Geological Surveys Geology Glaciology New York Plastic Explosives Ridges Statistics Terrain Topography United States Water Resources West Virginia