Metadata: Lake Superior Bathymetry Metadata for the Lake Superior Bathymetry Developed by Natural Resource Research Institute These metadata were created using the Minnesota Geographic Metadata Guidelines . Go to Section: 1. Identification Information 2. Data Quality Information 3. Spatial Data Organization Information 4. Spatial Reference Information 5. Entity and Attribute Information 6. Distribution Information 7. Metadata Reference Information Section 1 Identification Information Originator Natural Resource Research Institute Title Lake Superior Bathymetry Abstract The Lake Superior Bathymetry file is a grid file detailing the depth of Lake Superior. Purpose A base data layer Time Period of Content Date 03/25/1998 Currentness Reference Date of last change to the data file Progress Complete Maintenance and Update Frequency As needed Spatial Extent of Data Lake Superior Bounding Coordinates -97.293 -81.564 49.255 41.573 Place Keywords Lake Superior Theme Keywords Lake Superior Drainage Basin, Lake Superior, depth, bathymetry Theme Keyword Thesaurus None Access Constraints None Use Constraints None Contact Person Information Gerald Sjerven, GIS Specialist Natural Resource Research Institute 513 Miller Trunk Highway Duluth, Minnesota 55811 Phone: (218)-720-4388 FAX: (218)-720-4219 E-mail: gsjerven@sage.nrri.umn.edu Browse Graphic File Name none available Browse Graphic File Description Associated Data Sets Section 2 Data Quality Information - - - - - - Go back to top Attribute Accuracy See entity and attribute overview, contact NRRI Logical Consistency There are no known topological problems Completeness There is no known incomplete information; see entity and attribute overview Horizontal Positional Accuracy None available Vertical Positional Accuracy Not applicable Lineage 1 km grid surface generated from depth point values using inverse distance weighted interpolation with 12 nearest neighbors. The data was then mapjoined and adjusted to match the shoreline. Source Scale Denominator 547160 Section 3 Spatial Data Organization Information - - - - - - Go back to top Native Data Set Environment Arc/INFO 7.1.2 Geographic Reference for Tabular Data None Spatial Object Type Vector Vendor Specific Object Types Arc, area, label point, polygon Tiling Scheme Not applicable Section 4 Spatial Reference Information - - - - - - Go back to top Horizontal Coordinate Scheme Geographic (Lat. Long.) Ellipsoid GRS80 Horizontal Datum NAD83 Horizontal Units Meters Distance Resolution Altitude Datum Not applicable Depth Datum IGLD Depth Units Meters Cell Width 1000 Cell Height 1000 Map Projection Name Albers Equal Area Map Projection Parameters Standard Parallel: 29.5 Standard Parallel: 45.5 Longitude Of Central Meridian: -96 Latitude Of Projection Origin: 23 False Easting: 0 False Northing: 0 Other Coordinate System's Definition Planar Coordinate Encoding Method: Coordinate Pair Abscissa Resolution: 1 Ordinate Resolution: 1 Semi-Major Axis: 6378206.4 Denominator of Flattening Ratio: 294.98 Section 5 Entity and Attribute Information - - - - - - Go back to top Entity and Attribute Overview Due to data source type (grid), there are no entities or attributes for this file except the depth. Entity and Attribute Detailed Citation None Section 6 Distribution Information - - - - - - Go back to top Publisher Natural Resources Research Institute Publication Date Unpublished material Contact Person Information Gerry Sjerven, GIS Specialist Natural Resources Research Institute 5013 Miller Trunk Hwy Duluth, Minnesota 55811 Phone: (218)-720-4388 FAX: (218)-720-4328 E-mail: gsjerven@sage.nrri.umn.edu Distributor's Data Set Identifier Distribution Liability No warranty expressed or implied is made regarding the accuracy or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The University of Minnesota shall not be held liable for improper or incorrect use of the data described and/or contained herein. Transfer Format Name Arc/INFO export Transfer Format Version Number Transfer Size Ordering Instructions Online Linkage Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" above. Section 7 Metadata Reference Information - - - - - - Go back to top Metadata Date 08/25/1999 Contact Person Information Joel Nelson, GIS Intern Natural Resource Research Institute 5013 Miller Trunk Highway Duluth, Minnesota 55811 Phone: (218)-720-4254 FAX: (218)-720-4328 E-mail: jnelson@sage.nrri.umn.edu Metadata Standard Name Minnesota Geographic Metadata Guidelines Metadata Standard Version 2.01 Metadata Standard Online Linkage http://www.lmic.state.mn.us/gc/stds/metadata.htm This page last updated 08/25/1999. Go back to top The Lake Superior Decision Support project is coordinated through the Center for Water and the Environment at the Natural Resources Research Institute. The project is funded by the USEPA Region 5 Coastal Environmental Management Grant Program through the Minnesota Department of Natural Resources. For comments on this project or this home page, contact George Host. Last updated: Friday, January 18, 2002 11:43 The University of Minnesota is an equal opportunity educator and employer. © 1999-2000 University of Minnesota Duluth Natural Resources Research Institute CWE 5013 Miller Trunk Highway Duluth, MN 55811 (218)720.4294