Metadata for the
Georeferenced color IR photo base for Duluth, MN
watershed area
Natural Resources Research Institute
|
Section 1 |
Identification Information |
| Originator | Natural Resources Research Institute |
| Title | Georeferenced photo base for Duluth, Minnesota watershed area |
| Abstract | Georeferenced 1997 color IR photo base for Duluth, MN, watershed area. |
| Purpose | To provide base information about forest cover and wetlands for the Duluth Natural Resources Inventory |
| Time Period of Content Date | St. Louis County photos date -
Sept 9, 1997
Carlton County photos date - Sept 30, 1999 |
| Currentness Reference | Aerial photos taken in Sept, 1997 (St. Louis County), and Sept, 1999 (Carlton County) obtained by NRRI from Minnesota Department of Natural Resources |
| Progress | as of April, 2001, 100 percent of area described below (spatial extent) is complete |
| Maintenance and Update Frequency | None planned |
| Spatial Extent of Data | all watersheds within Duluth city limits as well as those watersheds which flow through the city |
| Bounding Coordinates UTM zone 15, NAD83 | E = 595,766
W = 548,123 N = 5,198,470 S = 5,166,075 |
| Place Keywords | Duluth, Minnesota |
| Theme Keywords | Color Infra-red, aerial photo, base map |
| Theme Keyword Thesaurus | |
| Access Constraints | None |
| Use Constraints | None |
| Contact Person Information | Paul Meysembourg, Information Technology
Professional
Natural Resources Research Institute Miller Trunk Highwy Duluth, MN 55802 Phone: (218) 720-4244 FAX: (218) 720-4219 E-mail: pmeysemb@.nrri.umn.edu |
| Browse Graphic File Name | IR_photo_index.gif |
| Browse Graphic File Description | This image shows extent of rectified images for Duluth and surrounding watersheds which flow through the city. |
| Associated Data Sets | ir photo index.shp contains the bounding extents for each of the rectified images. |
|
Section 2 |
Data Quality Information - - - - - - Go back to top |
| Attribute Accuracy | see lineage below |
| Logical Consistency | |
| Completeness | see IR_photo_index.gif |
| Horizontal Positional Accuracy | |
| Lineage | DNR 9" x 9" photos were scanned at 800 DPI on an Epson 1200s scanner. Photos were then rectified using the Arcview script "Imagewarp". Each photo was rectified after 20 to 40 points were found on both the scanned original photo and on the corresponding DOQ. Usually, RMS errors of 1 to 4 meters were obtained for each image. Those photos along the hillside usually had higher errors that those in flatter regions. After the rectification process, each photo was cropped in Arcview to eliminate as much overlap as possible. This resulted in much smaller file sizes and better accuracy since only the center 4 to 5 inches of photo is used. |
| Source Scale Denominator | 15,840 |
|
Section 3 |
Spatial Data Organization Information - - - - - - Go back to top |
| Native Data Set Environment | Geo-Tiff |
| Geographic Reference for Tabular Data | |
| Spatial Object Type | Raster |
| Vendor Specific Object Types | |
| Tiling Scheme | numbers correspond with Minnesota DNR color IR photo center index |
|
Section 4 |
Spatial Reference Information - - - - - - Go back to top |
| Horizontal Coordinate Scheme | UTM |
| Ellipsoid | Clarke 1866 |
| Horizontal Datum | NAD83 |
| Horizontal Units | Meters |
| Distance Resolution | |
| Altitude Datum | photos were flown at 7900 feet above ground level |
| Depth Datum | Not applicable |
| UTM Zone Number | 15 |
| SPCS Zone Identifier | 2201 |
|
Section 5 |
Entity and Attribute Information - - - - - - Go back to top |
| Entity and Attribute Overview | Vegetation, wetlands, roads, buildings, beaches, shoreline features, residential areas are visible |
| Entity and Attribute Detailed Citation | DNR website for explanation and ordering photos |
|
Section 6 |
Distribution Information - - - - - - Go back to top |
| Publisher | Natural Resources Research Institute |
| Publication Date | Unpublished material |
| Contact Person Information | Paul Meysembourg, Information Technology
Professional
Natural Resources Research Institute Miller Trunk Highwy Duluth, MN 55802 Phone: (218) 720-4244 FAX: (218) 720-4219 E-mail: pmeysemb@.nrri.umn.edu |
| Distributor's Data Set Identifier | DNR color IR rectified photos (Duluth area) |
| Distribution Liability | |
| Transfer Format Name | Geo-TIFF |
| Transfer Format Version Number | |
| Transfer Size | |
| Ordering Instructions | |
| Online Linkage | original unrectifed photo information can be found at: http://www.ra.dnr.state.mn.us/photos |
|
Section 7 |
Metadata Reference Information - - - - - - Go back to top |
| Metadata Date | 01/2001 |
| Contact Person Information | Same as Contact Person, |
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines |
| Metadata Standard Version | 1.1 |
| Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm |
