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U.S. Geological Survey Open-File Report 97-487



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Data


These digital GIS layers were compiled with ArcInfo software. The files are volcano hazard map data available as ArcInfo coverages and shapefiles. ArcInfo-compatible GIS software is required to use the files. The files are stored in a single zipped folder (crater_lake_coverages.zip or crater_lake_shapefiles.zip) in this release for ease of transfer. The scale of the source map limits the spatial resolution (scale) of the files to 1:100,000 or smaller. Available ArcInfo coverages and shapefiles are described below:

ArcInfo
coverage or shapefile

Description

  chazpoly

Proximal and Distal Volcano Hazard Zones (lines, polygons)

  chazline

Maximum extent of pumiceous deposits(lines)

  chaz

Silicic and mafic vent locations(lines)

  c_faults

Faults active in past few million years (lines)

  cballs

Location of ball symbol showing downthrown side of fault(points)

Download crater_lake_coverages.zip containing the digital files.

Download crater_lake_shapefiles.zip containing the digital files.

Federal Geographic Data Committee (FGDC) metadata are available for the digital files in text format.

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2007

U.S. Department of the Interior
U.S. Geological Survey


data.html
March, 2007