Oblique photographs taken during low-altitude transects of the Arctic Network of national park units and Selawik National Wildlife Refuge, Alaska, July 2013


Identification_Information:
Citation:
Citation_Information:
Originator: Marcot, B.G.,
Originator: M.T. Jorgenson,
Originator: A.R. DeGange
Publication_Date: 20140521
Title:
Oblique photographs taken during low-altitude transects of the Arctic Network of national park units and Selawik National Wildlife Refuge, Alaska, July 2013
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: US Geological Survey, Alaska Science Center
Larger_Work_Citation:
Citation_Information:
Originator: Marcot, B.G.,
Originator: M.T. Jorgenson,
Originator: A.R. DeGange
Publication_Date: 20140521
Title:
Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Geospatial_Data_Presentation_Form: website
Series_Information:
Series_Name: USGS Data Series 846
Issue_Identification: 1
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center
Other_Citation_Details: USGS project website.
Online_Linkage: http://alaska.usgs.gov/portal/project.php?project_id=349
Description:
Abstract:
Oblique images snapped from a Canon Rebel 3Ti with a Sigma zoom lens (18-200mm focal length), a Panasonic Lumix DMC-FZ200 (24x superzoom with variable focal length) and a Panasonic Lumix DMC-SZ7 (10x superzoom with variable focal length) of the arctic landscape during low altitude transects. Transects were conducted from small aircraft over the National Park Service’s Arctic Network (Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park and Preserve, Kobuk Valley National Park, and Noatak National Preserve) and the U.S. Fish and Wildlife Service’s Selawik National Wildlife Refuge in northwest Alaska.
Purpose:
Provide images of current conditions and prevalence of land cover types as a baseline for measuring future change, and to complement the existing grid-based sample photography of the region.
Supplemental_Information:
Images include an EXIF (exchangeable image file format) file that delineates camera metadata for each image.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20130716
Ending_Date: 20130718
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Description_of_Geographic_Extent:
The study area included five units of the National Park Service’s Arctic Network (Bering Land Bridge National Preserve, Cape Krusenstern National Monument, Gates of the Arctic National Park & Preserve, Kobuk Valley National Park, and Noatak National Preserve), the adjacent area of U.S. Fish and Wildlife Service’s Selawik National Wildlife Refuge, and a 10-km buffer around all of these administrative units, totaling 162,868 km2 in an area spanning roughly 500 km east to west and 300 km north to south. This is also the study area for the USGS’ Wildlife Potential Habitat Forecasting Framework Project (WildCast) that projects effects of climate change on future land cover and wildlife habitat (DeGange et al. 2013)
Bounding_Coordinates:
West_Bounding_Coordinate: -169.22
East_Bounding_Coordinate: -149.05
North_Bounding_Coordinate: 68.87
South_Bounding_Coordinate: 64.78
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Photogrammetry
Theme_Keyword: Arctic Network
Theme_Keyword: Low Altitude Air Photo
Theme_Keyword: Low Altitude Video
Theme_Keyword: Northwest Alaska
Theme_Keyword: Land Cover
Theme_Keyword: Ecotypes
Theme:
Theme_Keyword_Thesaurus: ISO 19115
Theme_Keyword: Biota
Theme_Keyword: Climatology
Theme_Keyword: Environment
Theme_Keyword: ImageryBaseMapsEarthCover
Theme_Keyword: GeoscientificInformation
Theme_Keyword: InlandWaters
Theme_Keyword: Oceans
Place:
Place_Keyword_Thesaurus: Geographic Names Information System
Place_Keyword: Alaska
Place_Keyword: Northwest Arctic
Place_Keyword: Bering Land Bridge National Preserve
Place_Keyword: Selawik National Wildlife Refuge
Place_Keyword: Cape Krusenstern National Monument
Place_Keyword: Gates of the Arctic National Park
Place_Keyword: Gates of the Arctic National Preserve
Place_Keyword: Kobuk Valley National Park
Place_Keyword: Noatak National Preserve
Access_Constraints: None
Use_Constraints:
It is requested that the authors, the USGS Alaska Science Center the National Park Service and the US Forest Service Pacific Northwest Research Station be cited for any subsequent publications referenced to this dataset. Please contact B.G. Marcot, US Forest Service with any questions. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with these data to evaluate data set limitations, restrictions or intended use. No warranty expressed or implied is made regarding the accuracy or utility of the data and information on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Inherent in any data set used to develop graphical representations are limitations of accuracy as determined by, among others, the source, scale and resolution of the data. This disclaimer applies both to individual use of the data and information, and aggregate use with other data and information.These data and any derived products are not legal documents and are not intended to be used as such. The information contained in these data may be dynamic and could change over time. The data are not better than the original sources from which they are derived. It is the responsibility of the data user to use the data appropriately and consistent with the limitations of geospatial data in general and these data in particular. It is strongly recommended that the data described or contained herein be acquired directly from the USGS and not indirectly through some other sources which may have changed the data in some way. Neither the originators of this dataset or the USGS shall be held liable for improper or incorrect use of the data described and/or contained herein.
Browse_Graphic:
Browse_Graphic_File_Name: @trip Bering 130716 Canon camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations over the Bering Land Bridge area taken with the Canon Rebel camera.
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: @trip KobGatSel 130717 Canon camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations taken over the Kobuk Valley, Gates of the Arctic and Selawik areas using a Canon Rebel camera.
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: @trip NoaKru 130718 Canon camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations over the Noatak and Cape Krusenstern area taken with the Canon Rebel camera.
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: @trip Bering 130716 Lumix camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations over the Bering Land Bridge area taken with the Panasonic Lumix camera.
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: @trip KobGatSel 130717 Lumix camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations taken over the Kobuk Valley, Gates of the Arctic and Selawik areas using a Panasonic Lumix camera.
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: @trip NoaKru 130718 Lumix camera.jpg
Browse_Graphic_File_Description:
Flight path and image locations over the Noatak and Cape Krusenstern area taken with the Panasonic Lumix camera.
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
USGS Alaska Science Center, National Park Service, US Forest Service Pacific Northwest Research Station
Native_Data_Set_Environment:
All photos are JPEG format and 2-4 Mb in size. Camera metadata (EXIF) is contained in an accompanying CSV format file.
Cross_Reference:
Citation_Information:
Originator: Bruce G. Marcot,
Originator: M. Torre Jorgenson,
Originator: Anthony R. DeGange
Publication_Date: 20140521
Title:
USGS Data Series 846: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Geospatial_Data_Presentation_Form: document
Series_Information:
Series_Name: 846
Issue_Identification: 1
Online_Linkage: http://dx.doi.org/10.3133/ds846
Cross_Reference:
Citation_Information:
Originator: Marcot, B.G.,
Originator: M.T. Jorgenson,
Originator: A.R. DeGange
Publication_Date: Unknown
Title: Wildlife Potential habitat Forecasting Framework (Wildcast)
Geospatial_Data_Presentation_Form: website
Publication_Information:
Publication_Place: Anchorage, Alaska
Publisher: U.S. Geological Survey, Alaska Science Center
Other_Citation_Details: Study information website
Online_Linkage: http://alaska.usgs.gov/science/program.php?pid=53

Data_Quality_Information:
Logical_Consistency_Report: Not applicable.
Completeness_Report: Not applicable.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Ensured that date and time in each photograph file’s EXIF (exchangeable image file format) data were accurate, as these data linked to the positions acquired from an on-board GPS and used for geotagging each photograph.
Lineage:
Methodology:
Methodology_Type: Field
Methodology_Description:
Oblique and nadir photographs and videos were shot along flight routes conducted July 16, 17, and 18, 2013, totaling 17 h 46 m flight time and 2,590 km flight distance, at a mean altitude of approximately 300 m above ground level. Flight routes were selected to provide a broad representation of land cover types within each unit and to overfly specific locations of recent disturbances. Photographs were geotagged, and photographs and videos were corrected for image lens distortion and appearance.
Process_Step:
Process_Description:
Raw photographs were organized into folders, renamed by flight date and camera type.
Process_Date: Unknown
Process_Step:
Process_Description:
Ensured that date and time in each photograph file’s EXIF (exchangeable image file format) data were accurate, as these data linked to the GPS waypoints for geotagging each photograph.
Process_Date: Unknown
Process_Step:
Process_Description:
Each photograph was adjusted for color saturation and gamma, which served to highlight many details.
Process_Date: Unknown
Process_Step:
Process_Description:
EXIF data from all photograph files -- including photograph file name and computer directory name, photograph date and time, camera type and settings, geotagged digital latitude and longitude, and altitude above mean sea level -- were extracted into spreadsheet files (.xlsx formats) by flight date and camera type.
Process_Date: Unknown
Process_Step:
Process_Description:
The individual photograph geolocations were intersected in GIS with a digital elevation model (DEM) of the ARCN study area so that ground-level elevation could be determined for each photograph location. Then, the difference between flight altitude above mean sea level (determined enroute via the on-board GPS unit) and ground-level elevation gave flight elevation above ground level for all photographs, which was used to verify the mean flight elevation used in the calculations of photograph time-lapse intervals and areal coverage of each photograph.
Process_Date: Unknown

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00001
Longitude_Resolution: 0.001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: World Geodetic System of 1984
Ellipsoid_Name: World Geodetic System of 1984
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.25722210088
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
Altitude_Resolution: 1.00
Altitude_Distance_Units: meters
Altitude_Encoding_Method: Implicit coordinate

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Oblique Image Camera Metadata
Entity_Type_Definition:
Camera metadata for a Canon Rebel 3Ti, a Panasonic Lumix DMC-FZ200 and a Panasonic Lumix DMC-SZ7. Includes position as implied by correlating exposure time with GPS time intervals.
Entity_Type_Definition_Source: None
Attribute:
Attribute_Label: Folder
Attribute_Definition: Name of the computer folder housing the digital image files.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: File name
Attribute_Definition: Name of the photographic image computer file (.jpg)
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Date and time
Attribute_Definition: Date (YY:MM:DD) and time (HH:MM:SS) the photograph was taken.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Camera make
Attribute_Definition: Make of the camera used to take the photograph.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Camera model
Attribute_Definition: Model of the camera used to take the photograph.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Height x width
Attribute_Definition: Size of the digital image in pixels.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Size of image file
Attribute_Definition: Number of pixels of the digital image (= height x width).
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Exposure (sec)
Attribute_Definition: Shutter speed in seconds.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Aperture (F-number)
Attribute_Definition: F-stop of the exposure.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: ISO
Attribute_Definition:
Sensitivity (“film speed”) setting of the exposure (ISO = International Organization of Standardization).
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Flash used?
Attribute_Definition: Whether camera flash was used for the exposure (all “no”).
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Distance
Attribute_Definition:
Focal length (focus distance to object) setting of the exposure.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Focal length
Attribute_Definition:
Focal length (focus distance to object) setting for the exposure.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Latitude
Attribute_Definition:
Latitude of the location of the center of the photograph in digital degrees north of the equator.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Longitude
Attribute_Definition:
Longitude of the location of the center of the photograph in digital degrees west of the prime meridian.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown
Attribute:
Attribute_Label: Flight altitude ASL m
Attribute_Definition:
Altitude of the airplane above sea level (ASL) when the photograph was taken, in meters.
Attribute_Definition_Source:
Publication: Low-Altitude Photographic Transects of the Arctic Network of National Park Units and Selawik National Wildlife Refuge, Alaska, July 2013
Attribute_Domain_Values:
Unrepresentable_Domain: Unknown

Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: USGS Alaska Science Center
Contact_Person: Dennis Walworth
Contact_Address:
Address_Type: mailing and physical
Address: 4210 University Dr.
City: Anchorage
State_or_Province: AK
Postal_Code: 99508
Contact_Voice_Telephone: 907-786-7001
Contact_Facsimile_Telephone: 907-786-7150
Contact_Electronic_Mail_Address: dwalworth@usgs.gov
Contact_Instructions: Leave a message.
Resource_Description: Zip file of jpg images and metadata files.
Distribution_Liability: None
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: zip
File_Decompression_Technique: Windows zip
Transfer_Size: 5800
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://alaska.usgs.gov/science/subprogram.php?sid=184
Fees: None

Metadata_Reference_Information:
Metadata_Date: 20140429
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Bruce Marcot
Contact_Organization: USDA Forest Service, Pacific Northwest Research Station
Contact_Position: Research Wildlife Biologist
Contact_Address:
Address_Type: mailing and physical
Address: 620 SW Main St., Suite 400
City: Portland
State_or_Province: OR
Postal_Code: 97208
Contact_Voice_Telephone: 503-808-2010
Contact_Facsimile_Telephone: 503-808-2020
Contact_Electronic_Mail_Address: bmarcot@fs.fed.us
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.9.28 on Thu Jan 15 14:22:17 2015