| - Full Metadata - | - View Attributes - | - none available - | - Get Data - |
This page last updated: 04/10/2007
Metadata created using Minnesota Geographic Metadata Guidelines
| Originator | University of Minnesota, Remote Sensing and Geospatial Analysis Laboratory |
| Abstract | Landsat TM data have been used to map the percentage of impervious surface area of the seven-county TCMA for the year 2000. Impervious surfaces are defined as areas impenetrable by water– including roads, rooftops, sidewalks and parking lots. The coverage provides information on the percentage of impervious surface on a 30-m pixel basis for all urban areas. The impervious surface layer was derived from a single date of Landsat-5 TM data. Following the classification of land cover types, a regression model relating percent impervious surface area to Landsat TM greenness values was used to estimate the percent impervious surface area for pixels classified as urban or developed. Classification of the Landsat TM data provides a means to map and quantify the degree of impervious surface area, an indicator of environmental quality, over large geographic areas and over time. |
| Browse Graphic | none available |
| Time Period of Content Date | 09/12/2000 |
| Currentness Reference | |
| Access Constraints | None |
| Use Constraints | By acceptance of this data, the user agrees to include a copy of this metadata record, including the liability disclaimer, whenever the uses transmits or provides the data (or any portion of it) to another user. |
| Distributor Organization | Minnesota Land Management Information Center (LMIC) |
| Ordering Instructions | This data set is distributed from the LMIC ftp site by clicking on 'Online Linkage.' Doing so will tell your browser to start downloading the zipfile imp_2000.zip, which contains the following files: TCMA_Impervious_2000.tif - - Impervious Surface GeoTIFF file IMP_2000.htm - - Metadata for this dataset Disclaimer.txt - - U of M disclaimer for dataset Save to the desired location, and unzip. |
| Online Linkage | Click here to download data. (See Ordering Instructions above for details.) By clicking here, you agree to the notice in "Distribution Liability" in Section 6 of this metadata. |
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 | Top of page | ||
| Originator | University of Minnesota, Remote Sensing and Geospatial Analysis Laboratory | |||
| Title | Impervious Surface Area Classification of Twin Cities Metropolitan Area, 2000 | |||
| Abstract | Landsat TM data have been used to map the percentage of impervious surface area of the seven-county TCMA for the year 2000. Impervious surfaces are defined as areas impenetrable by water– including roads, rooftops, sidewalks and parking lots. The coverage provides information on the percentage of impervious surface on a 30-m pixel basis for all urban areas. The impervious surface layer was derived from a single date of Landsat-5 TM data. Following the classification of land cover types, a regression model relating percent impervious surface area to Landsat TM greenness values was used to estimate the percent impervious surface area for pixels classified as urban or developed. Classification of the Landsat TM data provides a means to map and quantify the degree of impervious surface area, an indicator of environmental quality, over large geographic areas and over time. | |||
| Purpose | The data set was developed to map percent impervious surface area for the Twin Cities Metropolitan Area. | |||
| Time Period of Content Date | 09/12/2000 | |||
| Currentness Reference | ||||
| Progress | Complete | |||
| Maintenance and Update Frequency | As needed | |||
| Spatial Extent of Data | Seven-county Twin Cities Metropolitan Area (TCMA) of Minnesota, including Anoka, Carver, Dakota, Hennepin, Ramsey, Scott, and Washington Counties. | |||
| Bounding Coordinates | -94.020654 -92.727452 45.416185 44.467100 |
|||
| Place Keywords | Seven-county Twin Cities Metropolitan Area | |||
| Theme Keywords | imageryBaseMapsEarthCover, impervious surface area, urban, Landsat, impervious, runoff, land cover, permeability | |||
| Theme Keyword Thesaurus | ISO 19115 Topic Category | |||
| Access Constraints | None | |||
| Use Constraints | By acceptance of this data, the user agrees to include a copy of this metadata record, including the liability disclaimer, whenever the uses transmits or provides the data (or any portion of it) to another user. | |||
| Contact Person Information | Marvin Bauer,
Professor Remote Sensing and Geospatial Analysis Lab, University of Minnesota 1530 Cleveland Avenue North St. Paul, Minnesota 55108 Phone: (612) 624-3703 FAX: (612) 625-5212 E-mail: mbauer@umn.edu | |||
| Browse Graphic | none available | |||
| Browse Graphic File Description | ||||
| Associated Data Sets | Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1986 Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1991 Impervious Surface Area Classification of Twin Cities Metropolitan Area, 1998 |
|||
| Section 2 | Data Quality Information | Top of full metadata | Top of page | |
| Attribute Accuracy | The accuracy assessment was completed by selecting independent sample areas over the imagery. The percent impervious surface area was determined on DOQs for each sample and then compared to the estimated percent impervious surface from the regression model. The agreement between the Landsat estimate and DOQ measurements, as indicated by R˛, was 0.91, with a standard error for of 8.1%. See additional note under 'Lineage'. | |||
| Logical Consistency | ||||
| Completeness | ||||
| Horizontal Positional Accuracy | ||||
| Lineage | Production notes for TCMA_Impervious_2000.tif: The source data for the Impervious Surface coverage was Landsat-5 TM imagery over path 27, rows 28 and 29 acquired on 9/12/2000. Well-distributed sample areas were selected to represent levels of percent imperviousness from DOQ's (Digital Ortho Quarter-Quads) covering the TCMA. A complete range of percent imperviousness was collected with at least two sample areas for every 5% interval. ArcView 3.2 was used to digitize the boundaries around each impervious feature and calculate the impervious surface percentage for each individual sample area. After calculating and attributing the percent imperviousness for each sample area, we determined the mean Landsat TM tasseled cap greenness value for each sample area by overlaying the sample onto Landsat greenness image. We then created a second order polynomial regression equation with the mean greenness values as the independent variable and DOQ sampled percent impervious surface area as the dependent variable. With this regression equation, we estimated impervious surface percent for each image pixel and rescaled the output values from 0 - 100%. NOTE: In the course of the classification of cover types from the imagery, one land cover category was difficult to distinguish. Gravel pits have the same signature as paved areas and are impossible to separate out based on the signature alone. This is an issue in the Land Cover-Level 2 and Impervious Surface Categories. To distinguish the gravel pits, EPPL users can use the 'extractive' category in other land use/cover files. Other software users can obtain the Arc/INFO export files derived from the Minnesota Geological Survey map, 'Aggregate Resources for the Twin Cities Metropolitan Area, Minnesota -1999' - MGS Miscellaneous Map Series Map M-102. For more information on this data set, see http://lucy.lmic.state.mn.us/metadata/m102.html . |
|||
| Source Scale Denominator | ||||
| Section 3 | Spatial Data Organization Information | Top of full metadata | Top of page | |
| Native Data Set Environment | ERDAS IMAGINE 8.5 | |||
| Geographic Reference for Tabular Data | ||||
| Spatial Object Type | Raster | |||
| Vendor Specific Object Types | ||||
| Tiling Scheme | ||||
| Section 4 | Spatial Reference Information | Top of full metadata | Top of page | |
| Horizontal Coordinate Scheme | UTM | |||
| Ellipsoid | GRS80 | |||
| Horizontal Datum | NAD83 | |||
| Horizontal Units | Meters | |||
| Distance Resolution | 30 | |||
| Altitude Datum | Not applicable | |||
| Depth Datum | Not applicable | |||
| UTM Zone Number | 15 | |||
| SPCS Zone Identifier | 2202 | |||
| Section 5 | Entity and Attribute Information | Top of full metadata | Top of page | |
| Entity and Attribute Overview | ||||
| Entity and Attribute Detailed Citation | Bauer, Marvin, Nathan Heinert and Jean Doyle. 2003. Impervious Surface Mapping and Change Monitoring using Landsat Remote Sensing. Technical report, Remote Sensing Laboratory, University of Minnesota. 26 pages. | |||
| Section 6 | Distribution Information | Top of full metadata | Top of page | |
| Publisher | Remote Sensing and Geospatial Analysis Lab, University of Minnesota | |||
| Publication Date | 05/2003 | |||
| Contact Person Information | Susanne Maeder GIS Data Coordinator Minnesota Land Management Information Center (LMIC) 300 Centennial Building; 658 Cedar Street St. Paul, Minnesota 55155 Phone: (651) 201-2488 FAX: (651) 296-3698 E-mail: gisinfo.mngeo@state.mn.us |
|||
| Distributor's Data Set Identifier | imp_2000 | |||
| Distribution Liability | The data are provided as is and without any warranty to their performance, merchantability, or fitness for any particular purpose. The data were developed by the University of Minnesota for its own research purposes. The University does not represent or warrant that the data or documentation are error-free, complete, current or accurate. You are responsible for any consequences resulting from use of the data or your reliance on it. You should consult the data documentation for this particular data to determine its limitations and the precision to which the GIS data may depict distance, direction, location or geographic features. If you transmit or provide the GIS data (or any portion of it) to another user, it must include a copy of this disclaimer. | |||
| Transfer Format Name | GeoTiff | |||
| Transfer Format Version Number | ||||
| Transfer Size | 11.6 MB (unzipped) | |||
| Ordering Instructions | This data set is distributed from the LMIC ftp site by clicking on 'Online Linkage.' Doing so will tell your browser to start downloading the zipfile imp_2000.zip, which contains the following files: TCMA_Impervious_2000.tif - - Impervious Surface GeoTIFF file IMP_2000.htm - - Metadata for this dataset Disclaimer.txt - - U of M disclaimer for dataset Save to the desired location, and unzip. |
|||
| 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 | Top of full metadata | Top of page | |
| Metadata Date | 04/10/2007 | |||
| Contact Person Information | Marvin Bauer,
Professor Remote Sensing and Geospatial Analysis Lab, Univerity of Minnesota 1530 Cleveland Avenue North St. Paul, Minnesota 55108 Phone: (612) 624-3703 FAX: (612) 625-5212 E-mail: mbauer@umn.edu |
|||
| Metadata Standard Name | Minnesota Geographic Metadata Guidelines | |||
| Metadata Standard Version | 1.2 | |||
| Metadata Standard Online Linkage | http://www.lmic.state.mn.us/gc/stds/metadata.htm | |||
This page last updated: 04/10/2007