Contour Map of the Estimated Annual Probability of the Accumulation of 1m or more of Tephra in the Northwestern United States from Eruptions at 13 major Volcanic Centers in the Cascade Range.

Authors=HOBLITT R.P., MILLER C.D., SCOTT W.E.

Journal/Book_names=Open-File Report 87-297, Plate 2 of 5 ; Volcanic Hazards with Regard to Siting Nuclear-Power Plants in the Pacific Northwest

pages=1 sheet

Publish_year=1987

Publisher=U.S. Geological Survey

Language_of_Text=EN

note=縮尺=1:2,000,000 ; 大きさ（99 × 60 cm） ; 矩形範囲情報（左下緯度 = 38.3333, 左下経度 = -125.5, 右上緯度 = 49.1667, 右上経度 = -114）

ID=90008480