Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: 20040101 Title: Milepost 85 Fire of Alaska - 2002 Geospatial_Data_Presentation_Form: Raster digital data. Vector data are also available as ArcView Shape Files. Publication_Information: Publication_Place: Sioux Falls, South Dakota USA Publisher: U.S. Geological Survey Online_Linkage: http://edc.usgs.gov Description: Abstract: The U.S. Geological Survey (USGS) has entered into a cooperative agreement with the National Park Service (NPS) to deliver satellite imagery and derivitive products centered on major fires that impact national parks and other federal lands. This data set was compiled at the request of a federal land management agency and is part of a suite of products generated for a specific fire. See the National Burn Severity Mapping web site at: http://edc2.usgs.gov/fsp/severity/fire_main.asp Purpose: The purpose of this project is to develop a robust mapping methodology and consistent data products that allow federal land managers and fire ecologists to evaluate and compare burn severity within individual fires and between fires across various ecosystems. These products will help land managers to more effectively plan, implement and monitor fire recovery activities. Supplemental_Information: Fire Name: Milepost 85 Agency: State of Alaska and Bureau of Land Management Land Management Unit: Not applicable Date of Fire: 8/4/2002 Type of assessment: Extended Acres within Fire Perimeter: 19890 Landsat Path and Row: 81/14 Pre-Fire Landsat Date/Scene ID: Landsat 7; Aug. 3, 2002/LE7081014000221551 Post-Fire Landsat Date/Scene ID: Landsat 7; Aug. 6, 2003/LE7081014000321851 NOTE: This scene contains the Scan Line Corrector anomaly. Output Dataset Projection: Albers Conical Equal Area Datum Name: NAD27 Spheroid Name: Clarke 1866 1st Parallel: 55 00 00 N 2nd Parallel: 65 00 00 N Central Meridian: 154 00 00 W Latitude of Origin: 50 00 00 N Image subset Corner Coordinate (center of upper left pixel, projection meters) ULX: -509730 LRX: -455550 ULY: 1777320 LRY: 1731750 Image subset size: #Rows: 1520 #Columns: 1807 Pixel size: 30 meters Bounding Box: North Lat: 65 38 51 N South Lat: 65 10 04 N East Long: 163 46 37 W West Long: 165 04 47 W Latitude and Longitude within Fire Perimeter: Lat: 65 26 00 N Long: 164 31 02 W Fire Perimeter: Manually digitzed from Landsat data. For further information on NLAPS and Landsat TM data, please refer to the metadata documentation found on the USGS Clearinghouse website at: http://www.fgdc.gov/clearinghouse/clearinghouse.html Product List: mp8502b_pretm.tif Pre-Fire Landsat data subset (bands 1-5,7 Geo-TIFF format) mp8502b_postm.tif Post-Fire Landsat data subset (bands 1-5,7 Geo-TIFF format) mp8502b_dnbr Differenced Normalized Burn Ratio (DNBR) subset (ArcInfo GRID) mp8502b_pi Fire Perimeter (shape file) includes slcdrop.shp Mask of scan line corrector anomaly (Shape file) d811408020803 Full scene DNBR (ArcInfo GRID) Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 20020803 (pre-fire image) Single_Date/Time: Calendar_Date: 20020804 (date fire began) Single_Date/Time: Calendar_Date: 20030806 (post-fire image) Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: as needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -165.04.47 East_Bounding_Coordinate: -163.46.37 North_Bounding_Coordinate: 65.38.51 South_Bounding_Coordinate: 65.10.04 Keywords: Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: burn mapping Theme_Keyword: imagery Theme_Keyword: fire Theme_Keyword: Landsat Theme_Keyword: Bureau of Land Management Place: Place_Keyword_Thesaurus: none Place_Keyword: Milepost 85 Place_Keyword: Alaska Access_Constraints: FTP data sets are available to any user. Use_Constraints: There are no restrictions on use, except for reasonable and proper acknowledgement of information sources. Point_of_Contact: Contact_Information: +001 605-594-6151 or (USA) 800-252-4547 Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: CSR Contact_Voice_Telephone: +001 605-594-6151 Contact_Address: Address_Type: physical and mailing address Address: 47914 252nd Street City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_TDD/TTY_Telephone: +001 605-594-6933 Contact_Voice_Telephone: +001 605-594-6151 Contact_Facsimile_Telephone: +001 605-594-6589 Contact_Electronic_Mail_Address: fsedc@usgs.gov Hours_of_Service: 0800 - 1600 CT, M-F, -6 h GMT Contact_Instructions: http://edc2.usgs.gov/fsp/severity/contact_us.asp Data_Set_Credit: USGS and NASA Native_Data_Set_Environment: Oracle, ERDAS Imagine, & ArcInfo Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Three on-board calibrators (two solar, one internal) provide an absolute accuracy of 5 percent, excluding band 6. Logical_Consistency_Report: These Landsat data are collected from a nominal altitude of 705 kilometers in a near-polar, near-circular, sun-synchronous orbit at an inclination of 98.2 degrees, imaging the same 183-km swath of Earth's surface every 16 days. The pixels representing the bands for the image are in the data set only once. Completeness_Report: Fire perimeter was automated, (seed value 425, distance 325) with manual edits. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Energy reflected from Earth's surface passes through a whisk-broom scanning system and all-reflective optics before being collected by the solid-state detectors at the focal plane. Lineage: Process_Step: Process_Description: These data products are derived from Landsat Thematic Mapper data. A pre-fire scene and a post-fire scene are analyzed to create a Differenced Normalized Burn Ratio (DNBR) image. The DNBR image portrays the variations of burn severity within the fire. The Landsat images are terrain corrected and geometrically rectified to an Albers Conical Equal Area map projection using the National Landsat Archive Production System (NLAPS). The images are further processed to convert bands 1-5 and 7 to at-satellite-reflectance. The Normalized Burn Ratio (NBR) is computed for each date of imagery using the following formula: (Band 4 - Band 7) / (Band 4 + Band 7) = NBR The differenced NBR is computed by subtracting the post-fire NBR from the pre-fire NBR: PreNBR - PostNBR = DNBR Higher DNBR values are correlated with more severe burns. The DNBR image is evaluated to determine the threshold value between burned and unburned areas. The perimeter of the fire is delineated using the DNBR image. The DNBR image, the pre-fire and post-fire TM images, and a fire perimeter vector file are provided in digital format in the map projection used by the National Park Service. Source_Used_Citation_Abbreviation: TM Process_Date: 20040101 Source_Produced_Citation_Abbreviation: DNBR Cloud_Cover: 10 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Position: Principal Scientist Land Cover Applications Contact_Address: Address_Type: mailing and physical address Address: 47914 252nd Street EROS Data Center City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: +001 605-594-6151 Contact_TDD/TTY_Telephone: +001 605 594-6933 Contact_Facsimile_Telephone: +001 605 594-6589 Contact_Electronic_Mail_Address: fsedc@usgs.gov Hours_of_Service: 0800 - 1600 CT, M-F, -6 h GMT Contact_Instructions: http://edc2.usgs.gov/fsp/severity/contact_us.asp Distribution_Liability: No warranty expressed or implied is made by the USGS regarding the use of the data, nor does the act of distribution constitute any such warranty. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Geo-TIFF Format_Version_Number: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://edc2.usgs.gov/fsp/severity/download_data.asp Digital_Form: Digital_Transfer_Information: Format_Name: DNBR ArcInfo GRID Format_Version_Number: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://edc2.usgs.gov/fsp/severity/download_data.asp Digital_Form: Digital_Transfer_Information: Format_Name: shape file Format_Version_Number: 1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://edc2.usgs.gov/fsp/severity/download_data.asp Fees: No charge Ordering_Instructions: http://edc2.usgs.gov/fsp/severity/help.asp#ordering Turnaround: same day Metadata_Reference_Information: Metadata_Date: 20040109 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: USGS EROS Data Center Science & Applications Branch Contact_Position: Principal Scientist Land Cover Applications Contact_Address: Address_Type: mailing and physical address Address: 47914 252nd Street EROS Data Center City: Sioux Falls State_or_Province: SD Postal_Code: 57198-0001 Country: USA Contact_Voice_Telephone: +001 605-594-6151 Contact_TDD/TTY_Telephone: +001 605-594-6933 Contact_Facsimile_Telephone: +001 605-594-6589 Contact_Electronic_Mail_Address: fsedc@usgs.gov Hours_of_Service: 0800 - 1600 CT, M-F, -6 h GMT Contact_Instructions: http://edc2.usgs.gov/fsp/severity/contact_us.asp Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none