Metadata sample for 2007 Sumpter, OR

Metadata extracted from 2007 Sumpter, OR Bare Earth raster grid be_sumpter

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: USDA Forest Service
Originator: Watershed Sciences, Inc.
Publication_Date: 2007
Title: be_sumpter
Geospatial_Data_Presentation_Form: raster digital data
Online_Linkage:
\\DIANAM-PC\G\pslc2007\Sumpter_Delivery\Rasters\Bare_earth\be_sumpter
Description:
Abstract:
The dataset covers the USDA Forest Service Sumpter study area in the Wallowa-Whitman National Forest of northeastern Oregon . The survey area covers an 8-mile reach of the Powder River downstream from the town of Sumpter. The areal extent of the study area is approximately 3,146 acres and the extent of LiDAR data coverage is approximately 3,208 acres.
The bare earth digital elevation models (DEM) represent the earth's surface with all vegetation and human-made structures removed. The bare earth DEMs were derived from LiDAR data using TIN processing of the ground point returns. The DEM grid cell size is 1 meter. The elevation units are in meters. The term "fill" indicates that some elevation values have been interpolated across areas in the ground model where there is no elevation data (e.g. over water, dense vegetation).
Watershed Sciences, Inc. collected the LiDAR and created this data set for the USDA Forest Service.
Purpose:
Provide high resolution terrain elevation and land cover elevation data.
Supplemental_Information:
This data represents the complete coverage of the Sumpter, Oregon study area.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 17-Sept-2007
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -118.208761
East_Bounding_Coordinate: -118.084960
North_Bounding_Coordinate: 44.742917
South_Bounding_Coordinate: 44.682236
Keywords:
Theme:
Theme_Keyword_Thesaurus:
REQUIRED: Reference to a formally registered thesaurus or a similar authoritative source of theme keywords.
Theme_Keyword: LiDAR
Theme_Keyword: Light Detection and Ranging
Theme_Keyword: DEM
Theme_Keyword: digital terrain model
Theme_Keyword: USDA Forest Service
Theme_Keyword: elevation data
Theme_Keyword: topography
Theme_Keyword: bare earth
Theme_Keyword: high-resolution
Theme_Keyword: bare ground
Theme_Keyword: DTM
Place:
Place_Keyword: Oregon
Place_Keyword: Pacific Northwest
Place_Keyword: Powder River
Place_Keyword: Northeast Oregon
Place_Keyword: Sumpter
Place_Keyword: Wallowa-Whitman National Forest
Access_Constraints: None.
Use_Constraints:
In some areas of heavy vegetation or forest cover, there may be relatively few ground points in the LiDAR data. TINing the points produces large triangles and hence the elevations may be less accurate within such areas.
Elevation values for open water surfaces are not valid elevation values because few LiDAR points are returned from water surfaces. Triangles were created across water surfaces by interpolating from the nearest land points.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service
Contact_Person: Mike McNamara
Contact_Position: Watershed Program Manager
Contact_Address:
Address_Type: mailing and physical address
Address: P.O. Box 907
Address: 1550 Dewey Ave.
City: Baker City
State_or_Province: OR
Postal_Code: 97814
Country: USA
Contact_Voice_Telephone: 541-523-1382
Data_Set_Credit: USDA Forest Service
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.4.1420
Data_Quality_Information:
Logical_Consistency_Report:
LiDAR flight lines have been examined to ensure that there was at least 75% sidelap, there are no gaps between flightlines, and overlapping flightlines have consistent elevation values.
Shaded relief images have been visually inspected for data errors such as pits, border artifacts, gaps, and shifting. The data was examined at a 1:3500 scale.
Completeness_Report:
LiDAR data has been collected and processed for all areas within the project study area.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 1/3000th AGL
Horizontal_Positional_Accuracy_Explanation: See LiDAR data report.
Vertical_Positional_Accuracy:
Quantitative_Vertical_Positional_Accuracy_Assessment:
Vertical_Positional_Accuracy_Value: RMSE = 0.02 meters
Vertical_Positional_Accuracy_Explanation:
The Root Mean Square Error (RMSE) of the data set is 0.02 meters. Accuracy was assessed using 544 ground survey (real time kinematic) points. See LiDAR data report.
Lineage:
Process_Step:
Process_Description:
Acquisition.
The LiDAR data was collected on Sept. 17, 2007. A Leica ALS50 Phase II LiDAR system was mounted in a fixed-wing aircraft and flown above ground level (AGL). At least 100% overlap (minimum 50% side-lap) was used. Near nadir scan angles were used to increase penetration of vegetation to ground surfaces. Ground level GPS and aircraft IMU were collected during the flight.
Process_Step:
Process_Description:
Processing.
1. Flight lines and data were reviewed to ensure complete coverage of the study area and positional accuracy of the laser points. 2. Laser point return coordinates were computed using ALS Post Processor and IPAS Pro GPS/INS software based on independent data from the LiDAR system, IMU, and aircraft. 3. The raw LiDAR file was assembled into flight lines per return with each point having an associated x, y, and z coordinate. 4. Visual inspection of swath to swath laser point consistencies within the study area were used to perform manual refinements of system alignment. 5. Custom algorithms were designed to evaluate points between adjacent flight lines. Automated system alignment was computed based upon randomly selected swath to swath accuracy measurements that consider elevation, slope, and intensities. Specifically, refinement in the combination of system pitch, roll and yaw offset parameters optimize internal consistency. 6. Noise (e.g., pits and birds) was filtered using ALS postprocessing software, based on known elevation ranges and included the removal of any cycle slips. 7. Using TerraScan and Microstation, ground classifications utilized custom settings appropriate to the study area. 8. The corrected and filtered return points were compared to the RTK ground survey points collected to verify the vertical and horizontal accuracies. 9. Points were output as laser points, TINed and GRIDed surfaces.
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\MetadataTemplate\Jefferson\befilled.xml
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 6605
Column_Count: 9715
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 11
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -117.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 1.000000
Ordinate_Resolution: 1.000000
Planar_Distance_Units: meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: be_final
Attribute:
Attribute_Label: ObjectID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Value
Attribute:
Attribute_Label: Count
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USDA Forest Service
Contact_Address:
Address: P.O. Box 907
Address: 1550 Dewey Ave.
City: Baker City
State_or_Province: OR
Postal_Code: 97814
Country: USA
Resource_Description: Downloadable Data
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 245.590
Metadata_Reference_Information:
Metadata_Date: 20070917
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Watershed Sciences, Inc.
Contact_Person: REQUIRED: The person responsible for the metadata information.
Contact_Address:
Address_Type: mailing address
Address: 215 SE 9th Ave, Suite 106
City: Portland
State_or_Province: OR
Postal_Code: 97214
Country: USA
Contact_Electronic_Mail_Address: watershedsciences.com
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
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Profile_Name: ESRI Metadata Profile
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Generated by mp version 2.9.6 on Thu Jan 21 14:12:06 2010