High-resolution (0.5 m) georectified 1948 grayscale aerial photographs, Barrow, northern Alaska

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Lestak, Leanne R.
Originator: Manley, William F.
Originator: Sturtevant, Page M.
Originator: Maslanik, James A.
Originator: Tweedie, Craig E.
Originator: Brown, Jerry
Publication_Date: 20060501
Publication_Time: Unknown
Title:
High-resolution (0.5 m) georectified 1948 grayscale aerial photographs, Barrow, northern Alaska
Edition: Version 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name:
High-Resolution Rectified Aerial Photography for Collaborative Research of Environmental Change at Barrow, Alaska
Issue_Identification: 1948 photography
Publication_Information:
Publication_Place: Boulder, Colorado
Publisher: University of Colorado, CIRES
Other_Citation_Details:
Please cite as: Lestak, L.R., W.F. Manley, P.M. Sturtevant, J.A. Maslanik, C.E. Tweedie, and J. Brown. 2006. High-Resolution Rectified Aerial Photography for Collaborative Research of Environmental Change at Barrow, Alaska. Boulder, CO. Digital media.
Online_Linkage: <http://arcss.colorado.edu/data/arcss306.html>
Description:
Abstract:
This dataset contains five georectified frames of aerial photography acquired for the Barrow area on August 4, 1948. The original 9" x 9" black and white aerial photograph negatives, at 1:19,200 scale, were scanned at 1000 dpi. Each frame was then georectified using a polynomial transformation with image-to-image 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 area for the last six decades, and will be useful for detailed visualization and analysis.
Purpose:
These are computer-generated images of aerial photographs in which displacements caused by camera orientation have been removed by georectification. Distortions caused by topography have not been removed. Digital geocorrected photographs serve a variety of purposes, from interim maps to the basis of observation and analysis for earth science investigations. These digital geocorrected 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 five rectified frames are: brw_rect_1948_25_06.tif, brw_rect_1948_25_10.tif, brw_rect_1948_25_12.tif, brw_rect_1948_25_48.tif, brw_rect_1948_25_53.tif
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19480804
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -157.47
East_Bounding_Coordinate: -155.40
North_Bounding_Coordinate: 71.45
South_Bounding_Coordinate: 70.90
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
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Point Barrow
Place_Keyword: Alaska
Place_Keyword: North Slope
Place_Keyword: USA
Place_Keyword: Barrow
Stratum:
Stratum_Keyword_Thesaurus: none
Stratum_Keyword: Surface
Stratum_Keyword: Earth
Stratum_Keyword: Ground
Temporal:
Temporal_Keyword_Thesaurus: none
Temporal_Keyword: 1940s
Temporal_Keyword: 1948
Temporal_Keyword: August
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 19,200.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne R. Lestak
Contact_Organization:
University of Colorado, Cooperative Institute for Research in the Environmental Sciences (CIRES)
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 216
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0216
Country: USA
Contact_Voice_Telephone: 303-492-5802
Contact_Facsimile_Telephone: 303-492-1149
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
Browse_Graphic:
Browse_Graphic_File_Name:
<http://nsidc.org/data/docs/arcss/images/arcss306/brw_rect_1948_browse.jpg>
Browse_Graphic_File_Description: 1948 index map
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
University of Colorado(CIRES and INSTAAR), U.S. Geological Survey, University of Alaska Fairbanks and the Geophysical Institute. Acquisition and processing of this data set was supported by National Science Foundation, Arctic Research Support and Logistics Program, grant OPP-0224071 and Arctic Sciences Section grant OPP-0100120.
Native_Data_Set_Environment:
Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; ESRI ArcMap 8.3.0.800, ESRI ArcCatalog 9.1.
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
Geospatial_Data_Presentation_Form: remote-sensing image
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>
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. See the quality control report for GCPs used to geocorrect imagery, correction errors and other issues related to quality control.
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. A quality control report document is included with this dataset.
Completeness_Report:
Dataset coverage is along the coast from Nunavaaq Bay then northeast to the base of the Barrow spit. Void areas having a radiometric value of zero and appearing black may exist. These are areas resulting from image transformation from other planimetric systems to the Universal Transverse Mercator (UTM) projection.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The georectified aerial photograph horizontal positional accuracy and the assurance of that accuracy depend, in part, on the accuracy of the data inputs to the rectification process. These inputs consist of the photo source camera calibration, scanner calibration, the position accuracy of the image the aerial photograph is rectified to, and the number and accuracy of the points used to warp the photograph to the base image. See the accompanying accuracy report for offsets of independently checked points covering the entire photos or the portion of the photos where link points were able to be chosen. All 1948 aerial photographs were georectified to the 0.7 m panchromatic QuickBird satellite imagery acquired for the Barrow area in 2002 (Manley et al., 2006). Specifically, the 1948 frames were georectified to the Barrow Quadrangle (BQ) subsetted image where possible, and to the P001 image elsewhere. A DigitalGlobe custom orthorectified imagery product is released as an image with variable locational accuracy. DigitalGlobe makes no claims as to accuracy. The customer supplies the GCPs and DEMs. DigitalGlobe used PCI to create the orthoimage. Both DigitalGlobe and the NSF customer (CIRES) quality-checked each image, P001 and P002. The satellite imagery meets and usually exceeds QuickBird's specifications for 1:12,000 scale orthoimagery, which is defined as 10.2 meters CE90% and 6.2 meters RMSE. See the Barrow Quickbird Quality Assessment Report.pdf (released with the QuickBird imagery) for GCPs used to geocorrect imagery, correction errors and other issues related to quality control. Link points were used to rectify the aerial photographs to the Quickbird Satellite image usually with a second order polynomial tranformation. Independent check points were used to determine a root mean square error (RMSE). Degraded horizontal accuracy is likely in areas where few to no link points could be found due to significant changes in surface features occurring between the aerial photograph and satellite acquisition dates. These photographs contain no significant areas where this degraded accuracy applies. Since georectification does not use a digital elevation model to remove distortions caused by variations in topography, the offsets in hilly areas will likely be much greater than in flat areas, due to layover. Where bluffs exist above the beach in the aerial photograph, the photograph was georectified using points at the level of the bluff rather than the beach. Therefore, the horizontal accuracy of the beach area below the bluffs might be degraded depending on camera angle and bluff height. The same degradation in horizontal accuracy can be applied to gullies or the bottom of streambeds, as points chosen for georectification were attempted at the general ground level of the area.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Navy
Publication_Date: 19480901
Publication_Time: Unknown
Title: U.S. Navy BAR 25 1948 aerial photographs
Edition: Version 1
Geospatial_Data_Presentation_Form: remote-sensing image
Series_Information:
Series_Name: U.S. Navy 1948 BAR 25 Aerial Photographs
Issue_Identification: Version 1
Publication_Information:
Publication_Place: Reston, Virginia
Publisher: United States Geological Survey
Online_Linkage: <http://edc.usgs.gov>
Source_Scale_Denominator: 19200
Type_of_Source_Media: filmstrip
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 19480804
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: Navy BAR25 photos, 1948
Source_Contribution: Aerial photograph negative
Process_Step:
Process_Description:
The 1948 aerial photograph negatives were obtained from the USGS EDC. William Manley at INSTAAR scanned them at 1000 dpi using a Microtek ScanMaker 9800XL scanner. The scanned photographs were imported into the ArcGIS software as .tif images. All georectification was completed using the ArcMap georeferencing tool set with MS Windows 2000 as the operating system on a Dell Workstation Precision 330. The images were rectified to the panchromatic Barrow Quadrangle (BQ) subsetted 2002 Quickbird satellite imagery. If the photograph was located south of the extent of the "BQ" image then the P001 2002 QuickBird satellite image was used. Link points common to both the scanned aerial photographs and the satellite imagery were used to warp the photos. Nearly all the photographs were warped with a second-order polynomial transformation unless a first-order polynomial yielded a more accurate transformation. First-order polynomial warping was used for photographs that contained mostly water. Control points cannot be selected in water areas. All images were resampled using nearest neighbor interpolation, with a 0.5-meter cell size for the photo set. DigitalGlobe created custom orthorectified, and radiometrically corrected, tiled imagery. They delivered two image swaths for the Barrow area, image P001 the westernmost image and image P002 the easternmost image. Each image was independently orthocorrected.
Source_Used_Citation_Abbreviation: Barrow 1948 Aerial Photographs, 2006
Process_Date: 20060301
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Leanne R. Lestak
Contact_Organization: University of Colorado - CIRES
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing address
Address: UCB 216
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0216
Country: USA
Contact_Voice_Telephone: 303-492-5802
Contact_Facsimile_Telephone: 303-492-1149
Contact_Electronic_Mail_Address: Leanne.Lestak@colorado.edu
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 grayscale aerial photograph
Entity_Type_Definition_Source: University of Colorado, CIRES
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: 19480804
Ending_Date_of_Attribute_Values: 19480804
Overview_Description:
Entity_and_Attribute_Overview:
8-bit grayscale GeoTIFF, from panchromatic source. Each pixel contains an 8-bit gray-scale value between 0-255. A value of 0 represents the color black, while a value of 255 represents the color white. All values between 0 and 255 are repesented as a shade of gray varying from black to white.
Entity_and_Attribute_Detail_Citation: University of Colorado, CIRES
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: User Services
Contact_Organization: National Snow and Ice Data Center (NSIDC)
Contact_Address:
Address_Type: mailing and physical address
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303)-492-6199
Contact_Facsimile_Telephone: +1 (303)-492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
Resource_Description: ARCSS306
Distribution_Liability:
The National Snow and Ice Data Center (NSIDC) 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. NSIDC 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
Format_Version_Number: 1
Format_Specification: DVD
Format_Information_Content: Aerial Photographs
File_Decompression_Technique: no compression applied
Transfer_Size: 9 GB
Digital_Transfer_Option:
Offline_Option:
Offline_Media: DVD
Recording_Format: Standard
Fees: None
Ordering_Instructions: Contact Distributor
Custom_Order_Process: Contact Distributor
Metadata_Reference_Information:
Metadata_Date: 20060508
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Snow and Ice Data Center (NSIDC)
Contact_Person: User Services
Contact_Address:
Address_Type: mailing address
Address: CIRES, 449 UCB
Address: University of Colorado
City: Boulder
State_or_Province: CO
Postal_Code: 80309-0449
Country: USA
Contact_Voice_Telephone: +1 (303)-492-6199
Contact_Facsimile_Telephone: +1 (303)-492-2468
Contact_Electronic_Mail_Address: nsidc@nsidc.org
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.6 on Mon May 15 15:08:31 2006