README INFORMATION FOR RELATIVE EARTHQUAKE HAZARD MAPS FOR SELECTED URBAN AREAS IN WESTERN OREGON, CD-ROM DISK This compact disc contains digital files for Interpretive Map Series IMS-7, ‘Relative Earthquake Hazard Maps for Selected Urban Areas in Western Oregon.’ The year 2000 publication IMS-7 is issued by the Oregon Department of Geology and Mineral Industries. The full publication includes color hardcopy relative earthquake hazard maps (2 sheets), a printed explanatory text, and a compact disc. The publication is available from The Nature of the Northwest Information Center Suite 177 800 NE Oregon Street Portland, OR 97232-2162 503/872-2750 Fax 503/731-4066 http://www.naturenw.org and the Baker City and Grants Pass, Oregon, field offices of the Oregon Department of Geology and Mineral Industries. Title and authorship ‘Relative Earthquake Hazard Maps of Selected Urban Areas in Western Oregon: Dallas, Hood River, McMinnville-Dayton-Lafayette, Monmouth-Independence, Newberg-Dundee, Saint Helens-Columbia City-Scappoose, Sandy, Sheridan-Willamina’ was produced by Ian P. Madin and Zhenming Wang of the Oregon Department of Geology and Mineral Industries. Files Apart from this README file, all data are grouped into three folders: ‘Maps,’ ‘Text,’ and ‘Metadata.’ ‘Text’ folder: Contains the complete explanatory ‘text-only’ material in -.txt format (IMS-07-CDtx.txt) and illustrations and tables separately in -.jpg, -.tif, and -.xls formats. The text includes an introduction, hazard map explanation and methodology, and source information. ‘Maps’ folder: The digital map files are presented as raster images and vector files. The digital image map files are in JPEG format. Vector files are available in two formats: (1) .tab – native file format of MapInfo GIS software package by MapInfo Corporation of Troy, New York. (2) .shp – native file format of ArcView GIS software package by ESRI, Redlands, California. Note: all map files are in Transverse Mercator projection, NAD 1927, Zone 10, meters ‘Metadata’ folder: The metadata.txt is a documentation of the digital map dataset. Data viewing Most files can be viewed with a variety of software systems. For the vector map data, both program manufacturers currently offer viewer software that can be downloaded free: http://www.esri.com/software/arcexplorer/index.html http://www.mapinfo.com/software/proviewer/index.html NOTICE The results and conclusions of this report are necessarily based on limited geologic and geophysical data, as described in this report. At any given site in any map area, site-specific data could give results that differ from those shown on this map. THIS REPORT CANNOT REPLACE SITE-SPECIFIC INVESTIGATIONS. Some appropriate uses are discussed in the report. The hazards of an idividual site should be assessed through geotechnical or engineering-geology investigation by qualified practitioners. Source.