High-resolution orthocorrected 1997 true color aerial photographs, Barrow spit, northern Alaska

Metadata also available as - [Parseable text]

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Lestak, Leanne R.
Originator: Parrish, Eric G.
Originator: Manley, William F.
Originator: Brown, Jerry
Publication_Date: 20070401
Publication_Time: Unknown
Title:
High-resolution orthocorrected 1997 true color aerial photographs, Barrow spit, northern Alaska
Edition: Version 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name:
High-Resolution Orthocorrected Aerial Photography of the Barrow spit, Alaska
Issue_Identification: 1997 photography
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher: University of Colorado, INSTAAR
Other_Citation_Details:
Please cite as: Lestak, L.R, E.G. Parrish, W.F. Manley and J. Brown. 2007. High-Resolution Orthocorrected Aerial Photography of the Barrow spit, Alaska. Boulder, CO. Digital media.
Description:
Abstract:
This dataset contains four orthorectified frames of aerial photography acquired for the Barrow spit on July 16, 1997. The original 9" x 9" true color aerial photograph prints, at 1:12,000 scale, were scanned at 635 dpi. Each frame was then orthorectified using an air-photo camera model and a 2002 IFSAR DEM (Manley et al., 2005) with control points taken from 2002 QuickBird satellite imagery (Manley et al., 2006) . The frames are projected to UTM zone 4 using the NAD83 datum, with a horizontal resolution of 0.5 m, and are distributed in GeoTIFF format. This dataset is part of a suite of rectified photos covering the Barrow spit for the last five decades. Together, the imagery will be of interest to land managers, scientists, and others for observation and analysis of natural features and ecosystems
Purpose:
These are computer-generated images of aerial photographs in which displacements caused by camera orientation have been removed by orthorectification. Distortions caused by topography have been removed using a Digital Elevation Model (DEM). Digital orthocorrected photographs serve a variety of purposes, from interim maps to the basis of observation and analysis for earth science investigations. This time series of orthorectified imagery will be helpful to assess the status of environmental features, and to detect change in: 1) cultural resources and archeological sites; 2) ecosystem components such as shoreline change, geology, soils, permafrost, lake and stream hydrology, and vegetation assemblages; and 3) marine, terrestrial, and freshwater habitats for a variety of animals. These digital orthocorrected images are useful as layers within a geographic information system.
Supplemental_Information:
Filenaming convention for this dataset is place_'type-of-geocorrection'_year_'scale-or-roll-or-flightline'_frame.tif. The filenames for the four orthocorrected frames are: brw_ortho_1997_1_13.tif, brw_ortho_1997_1_15.tif, brw_ortho_1997_1_17.tif and brw_ortho_1997_1_19.tif.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19970716
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -156.7
East_Bounding_Coordinate: -156.45
North_Bounding_Coordinate: 71.4
South_Bounding_Coordinate: 71.33
Keywords:
Theme:
Theme_Keyword_Thesaurus: MEL_Scientific-Engineering_Field_Thesaurus
Theme_Keyword: aerial photograph
Theme_Keyword: digitial photograph
Theme_Keyword: georectified photograph
Theme_Keyword: geocorrected image
Theme_Keyword: Cartography
Theme_Keyword: Geography
Theme_Keyword: Mapping
Theme_Keyword: Photogrammetry
Theme_Keyword: Remote
Theme_Keyword: Sensing
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Geodesy
Theme_Keyword: Hydrology
Theme_Keyword: Topography
Theme_Keyword: DEM
Theme_Keyword: DTM
Theme_Keyword: orthophoto
Theme_Keyword: photomosaic
Theme_Keyword: orthoimagery
Theme_Keyword: scan
Theme_Keyword: tiff
Theme_Keyword: aerial
Theme_Keyword: photograph
Theme_Keyword: digital
Theme:
Theme_Keyword_Thesaurus: National Park Service Theme Category Thesaurus
Theme_Keyword: Digital Orthophoto
Theme_Keyword: Elevation / Bathymetry
Theme_Keyword: Geodetic/ Surveying
Theme_Keyword: General Management
Theme_Keyword: Geology
Theme_Keyword: Landform
Theme_Keyword: Monitoring
Theme_Keyword: Resource Management
Theme_Keyword: Soils
Theme_Keyword: Weather / Climate
Theme_Keyword: Water
Theme_Keyword: Cultural Resources
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: oceans
Theme_Keyword: elevation
Theme_Keyword: climatologyMeterologyAtmosphere
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Point Barrow
Place_Keyword: Alaska
Place_Keyword: North Slope
Place_Keyword: USA
Place_Keyword: Barrow
Place_Keyword: Arctic Ocean
Place_Keyword: Chukchi Sea
Place_Keyword: Beaufort Sea
Place_Keyword: Arctic Circle
Stratum:
Stratum_Keyword_Thesaurus: none
Stratum_Keyword: Surface
Stratum_Keyword: Earth
Stratum_Keyword: Ground
Stratum_Keyword: Terrain
Stratum_Keyword: Coast
Temporal:
Temporal_Keyword_Thesaurus: none
Temporal_Keyword: 1990s
Temporal_Keyword: 1997
Temporal_Keyword: July
Temporal_Keyword: Summer
Access_Constraints: None
Use_Constraints:
Dataset credit required. Use at your own risk. Users assume responsibility to determine the usability of the dataset, as well as dataset resolution and accuracy, for their purposes. It is not recommended that the data be used at a scale larger than 1 to 12,000.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne R. Lestak
Contact_Organization:
University of Colorado, Institute of Arctic and Alpine Research (INSTAAR)
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Contact_Voice_Telephone: 303-492-5802
Contact_Facsimile_Telephone: 303-492-6388
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Data_Set_Credit:
University of Colorado (INSTAAR), and the U.S. Geological Survey. Acquisition and processing of this data set was supported by Dr. Anne Jensen, Ukpeagvik Inupiat Corporation, Science Division, Barrow, AK.
Native_Data_Set_Environment:
Microsoft Windows XP Professional x64 Edition, ESRI ArcCatalog 9.1, and NPS Metadata Tools, vs 1.1.
Cross_Reference:
Citation_Information:
Originator: Manley, William F.
Originator: Lestak, Leanne R.
Originator: Tweedie, Craig E.
Originator: Maslanik, James A.
Publication_Date: 20060501
Publication_Time: Unknown
Title:
High-Resolution Quickbird Imagery and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska.
Edition: Version 1
Series_Information:
Series_Name:
High-Resolution Quickbird Imagery and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska
Issue_Identification: 2002 QuickBird Satellite Imagery
Publication_Information:
Publication_Place: Boulder, Colorado 80309
Publisher:
National Snow and Ice Data Center, CIRES, University of Colorado
Other_Citation_Details:
Please cite as: Manley, W.F., L.R. Lestak, C.E. Tweedie and J.A. Maslanik. 2006. High-Resolution Quickbird Imagery and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska. Boulder, CO: National Snow and Ice Data Center. Digital media.
Online_Linkage: <http://arcss.colorado.edu/data/arcss304.html>
Geospatial_Data_Presentation_Form: remote-sensing image
Cross_Reference:
Citation_Information:
Originator: Manley, William F
Originator: Lestak, Leanne R.
Originator: Tweedie, Craig E.
Originator: Maslanik, James A.
Publication_Date: 20040131
Publication_Time: Unknown
Title:
High-Resolution Radar Imagery, Digital Elevation Models, and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska.
Edition: Version 1
Series_Information:
Series_Name:
High-Resolution Radar Imagery, Digital Elevation Models, and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska.
Issue_Identification: Digital Elevation Models
Publication_Information:
Publication_Place: Boulder, Colorado 80309
Publisher:
National Snow and Ice Data Center, CIRES, University of Colorado
Other_Citation_Details:
Please cite as: Manley, W.F., L.R. Lestak, C.E. Tweedie and J.A. Maslanik. 2004. High-Resolution Radar Imagery, Digital Elevation Models, and Value-Added Geospatial Layers for Collaborative Research of Environmental Change at Barrow, Alaska. Boulder, CO: National Snow and Ice Data Center. Digital media.
Online_Linkage: <http://arcss.colorado.edu/data/arcss302.html>
Geospatial_Data_Presentation_Form: raster digital data
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Image brightness values may deviate from brightness values of the original imagery due to image value interpolation during the scanning and rectification processes. Each image has a different locational accuracy.
Logical_Consistency_Report:
This raster data set contains pixels with values that represent relative brightness. Each pixel represents a half meter on the ground. Each geocorrected photograph was checked for accuracy using independent control points. Root mean square errors (RMSE) were calculated for each photograph.
Completeness_Report:
"Full" frame orthophotos were generated for each scanned exposure. Void areas resulting from rectification were assigned a digital value of zero (black, value = 0). The orthorectified frames extend along the Chukchi Sea coast from base of the Barrow spit to Point Barrow which is located at the north end of the Barrow spit.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The aerial photography was fully orthorectified in ERDAS Imagine using an air photo model, Digital Elevation Model, focal length as known from calibration reports or the imagery itself, and fiducial coordinates as estimated through digital measurement. The positional accuracy of the orthorectified frames depends on the accuracy of these inputs. Furthermore, the photographs were registered to a companion 2002 ortho DigitalGlobe QuickBird satellite image with use of image-to-image control points. Thus, positional accuracy also depends on the number, distribution, and accuracy of these points.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Value: 0.78 meters
Horizontal_Positional_Accuracy_Explanation:
The horizontal accuracy was quantified for each orthorectified frame with an average of 7 independent image-to-image check points taken from the companion 2002 QuickBird satellite orthoimage. Root Mean Square errors (RMSE) range from +/- 0.58 m to 1.09 m, with an average of +/- 0.78 m. These errors are relative to the satellite image, which has an absolute RMSE of 2.1 m. RMSE errors are reported for each frame in the accessory index layers.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Aeromap, U.S.
Publication_Date: 19970716
Title: Aeromap, U.S., 1997 Aerial Photographs
Edition: Version 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: Aeromap, U.S., Aerial Photographs
Issue_Identification: 1997 photographs
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: Aeromap, U.S.
Online_Linkage: <http://www.aeromap.com/>
Source_Scale_Denominator: 12000
Type_of_Source_Media: filmstrip
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19970716
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Aeromap, U.S., photos, 1997
Source_Contribution: Aerial photograph print
Process_Step:
Process_Description:
Aerial photograph prints were obtained from the Aeromap, U.S. William Manley at INSTAAR scanned them at 615 dpi using a Microtek ScanMaker 9800XL scanner. The IFSAR DEM (Manley et al, 2004), in UTM zone 4, NAD83, with 5-m grid-cell spacing, was used. An effort to obtain camera calibration reports for the photography was not successful. Focal length was taken where apparent on frame images, or estimated from calibration reports based on limited camera information. Principal point coordinates were assumed to be 0, 0. Fiducial coordinates were measured onscreen from the digital scans. Procedures for rectification were refined through extensive testing of possible models (polynomial, DLT, and camera model), software packages, DEM resolution & accuracy, control point number & placement, resampling routines, and other parameters. Full orthorectification was completed using ERDAS Imagine v9.0 with the air-photo camera model, the IFSAR DEM, and image-to-image control points visually linked to the 2002 DigitalGlobe orthoimage. An average of 17 control points were placed on each frame, using meter-scale, mostly natural, apparently stable features such as small landforms, ponds, or outcrops (specifically excluding features associated with the coastline). Image processing was conducted with cubic resampling to UTM zone 4, NAD83. Output resolution was 0.5 m. After orthorectification, the relative horizontal accuracy of each frame was quantified with an average of 8 independent check points, using ArcGIS v9.1 and the NEAR command. The Root Mean Square error (RMSE) of check points was calculated for each frame, and averaged to +/- 0.78 m (see section on horizontal accuracy). Polygon index shapefiles were created to outline the useful extent of each frame. Information pertaining to air photo acquisition, scanning, and orthorectification was compiled, and joined as attributes into the index layers. FGDC-compliant metadata was then finalized.
Source_Used_Citation_Abbreviation: Barrow 1997 Aerial Photographs, 2006
Process_Date: 20061208
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne R. Lestak
Contact_Organization: University of Colorado - INSTAAR
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 450
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Contact_Voice_Telephone: 303-492-5802
Contact_Facsimile_Telephone: 303-492-6388
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Source_Produced_Citation_Abbreviation: 1997 Orthorectified Photography, 2006
Cloud_Cover: 0
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 4
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -159.000000
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: 0.500000
Ordinate_Resolution: 0.500000
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: Band_1
Entity_Type_Definition: Digital scan of color aerial photograph - red
Entity_Type_Definition_Source: University of Colorado, INSTAAR
Attribute:
Attribute_Label: Value
Attribute_Definition: Values that represent relative brightness
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute_Units_of_Measure: values that represent relative brightness
Beginning_Date_of_Attribute_Values: 19970716
Ending_Date_of_Attribute_Values: 19970716
Overview_Description:
Entity_and_Attribute_Overview:
8-bit 3 band GeoTIFF, from color source. Each pixel contains an 8-bit red, green or blue value between 0-255. A value of 0 represents the no saturation, while a value of 255 represents full saturation. All values between 0 and 255 are repesented as a shade of red, blue or green varying from no saturation to full saturation.
Entity_and_Attribute_Detail_Citation: University of Colorado, INSTAAR
Detailed_Description:
Entity_Type:
Entity_Type_Label: Band_2
Entity_Type_Definition: Digital scan of color aerial photograph - green
Entity_Type_Definition_Source: University of Colorado, INSTAAR
Attribute:
Attribute_Definition: Values that represent relative brightness
Attribute_Definition_Source: ESRI
Beginning_Date_of_Attribute_Values: 19970716
Ending_Date_of_Attribute_Values: 19970716
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute_Units_of_Measure: values that represent relative brightness
Detailed_Description:
Entity_Type:
Entity_Type_Definition_Source: University of Colorado, INSTAAR
Entity_Type_Definition: Digital scan of color aerial photograph - blue
Entity_Type_Label: Band_3
Attribute:
Attribute_Definition: Values that represent relative brightness
Attribute_Definition_Source: ESRI
Beginning_Date_of_Attribute_Values: 19970716
Ending_Date_of_Attribute_Values: 19970716
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute_Units_of_Measure: values that represent relative brightness
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne Lestak
Contact_Organization: University of Colorado, INSTAAR
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: INSTAAR, 450 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Contact_Voice_Telephone: +1 (303)-492-5802
Contact_Facsimile_Telephone: +1 (303)-492-6388
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Distribution_Liability:
The University of Colorado, INSTAAR (Institute of Arctic and Alpine Research) shall not be held liable for improper or incorrect use of the data described and/or contained herein. The information contained in these data is dynamic and may change over time. The data are not better than the original sources from which they were derived. It is the responsibility of the data user to use the data appropriately and consistently within the limitations of geospatial data in general and these data in particular. Any related graphics are intended to aid the data user in acquiring relevant data; it is not appropriate to use the related graphics as data. INSTAAR gives no warranty, expressed or implied, as to the accuracy, reliability, or completeness of these data. These data and related graphics are not legal documents and are not intended to be used as such. This disclaimer applies both to individual use of the data and aggregate use with other data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: TIFF
Transfer_Size: 800 MB
Format_Version_Number: 1
Format_Specification: DVD
Format_Information_Content: Aerial Photographs
File_Decompression_Technique: no compression applied
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD
Recording_Format: Standard
Fees: None
Ordering_Instructions: Contact Distributor
Resource_Description: Refer to title of dataset
Custom_Order_Process: Contact Distributor
Metadata_Reference_Information:
Metadata_Date: 20060508
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Colorado, INSTAAR
Contact_Person: Leanne Lestak
Contact_Address:
Address_Type: mailing address
Address: INSTAAR, 450 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0450
Country: USA
Contact_Voice_Telephone: +1 (303)-492-5802
Contact_Facsimile_Telephone: +1 (303)-492-6388
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Metadata_Time_Convention: local time
Generated by mp version 2.8.25 on Wed Apr 04 14:40:08 2007