Orthophotomosaic images (natural color) of the north coast of Barter Island, Alaska acquired on July 05 2015 (GeoTIFF image; 8-cm resolution)

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Matt Nolan
Originator: Ann E. Gibbs
Originator: Alexander G. Snyder
Publication_Date: 2019
Title:
Orthophotomosaic images (natural color) of the north coast of Barter Island, Alaska acquired on July 05 2015 (GeoTIFF image; 8-cm resolution)
Geospatial_Data_Presentation_Form: GeoTIFF
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9964TKX
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Other_Citation_Details:
The first Online Linkage link is to the publication landing page. The second link is to the page containing the data.
Online_Linkage: https://doi.org/10.5066/P9964TKX
Online_Linkage: Larger_Work_Citation:
Citation_Information:
Originator: Ann E. Gibbs
Originator: Matt Nolan
Originator: Alexander G. Snyder
Publication_Date: 2019
Title:
Orthophotomosaics, elevation point clouds, digital surface elevation models and supporting data from the north coast of Barter Island, Alaska
Series_Information:
Series_Name: data release
Issue_Identification: DOI:10.5066/P9964TKX
Publication_Information:
Publication_Place: Pacific Coastal and Marine Science Center, Santa Cruz, CA
Publisher: U.S. Geological Survey
Other_Citation_Details:
Suggested citation: Gibbs, A.E., Nolan, M., and Snyder, A.G., 2019, Orthophotomosaics, elevation point clouds, digital surface elevation models, and supporting data from the north coast of Barter Island, Alaska: U.S. Geological Survey data release, https://doi.org/10.5066/P9964TKX
Online_Linkage: https://doi.org/10.5066/P9964TKX
Description:
Abstract:
Aerial photographs were collected from a small, fixed-wing aircraft over the coast of Barter Island, Alaska on July 05 2015. Precise aircraft position information and structure-from-motion photogrammetric methods were combined to a derive high-resolution orthophotomosaic. This orthophotomosaic contain 3-band, 8-bit, unsigned raster data (red/green/blue; file format-GeoTIFF) with a ground sample distance (GSD) resolution of 8 cm. The file employs Lempel-Ziv-Welch (LZW) compression. This orthophotomosaic was shifted (registered) to coincide with surveyed ground control points relative to the WGS84 datum.
Purpose:
The data were acquired in order to demonstrate the utility of using structure-from-motion photogrammetric methods for deriving digital elevation data using imagery acquired from a fixed-wing aircraft in remote environments. Companion data sets, including orthophotomosaics and digital surface models are used to evaluate fine-scale morphological and volumetric change to beaches and permafrost bluffs.
Supplemental_Information:
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20150705
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -143.792455
East_Bounding_Coordinate: -143.546217
North_Bounding_Coordinate: 70.137842
South_Bounding_Coordinate: 70.114458
Keywords:
Theme:
Theme_Keyword_Thesaurus: USGS Metadata Identifier
Theme_Keyword: USGS:5c539782e4b0708288fd0794
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Hazards and Resources Program
Theme_Keyword: CMHRP
Theme_Keyword: Pacific Coastal and Marine Science Center
Theme_Keyword: PCMSC
Theme_Keyword: Gridded Data
Theme_Keyword: aerial images
Theme_Keyword: Airborne imagery
Theme_Keyword: Digital aerial imagery
Theme_Keyword: Orthoimagery
Theme_Keyword: Natural color
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme:
Theme_Keyword_Thesaurus: USGS Thesaurus
Theme_Keyword: aerial photography
Theme_Keyword: geospatial datasets
Theme:
Theme_Keyword_Thesaurus: Data Categories for Marine Planning
Theme_Keyword: Physical habitats and geomorphology
Theme:
Theme_Keyword_Thesaurus: Marine Realms Information Bank (MRIB) keywords
Theme_Keyword: coastal erosion
Theme_Keyword: permafrost
Place:
Place_Keyword_Thesaurus: Geographic Names Information System (GNIS)
Place_Keyword: Arctic Ocean
Place_Keyword: Beaufort Sea
Place_Keyword: State of Alaska
Place_Keyword: Barter Island
Place_Keyword: Kaktovik
Place_Keyword: Arctic National Wildlife Refuge
Place_Keyword: United States of America
Access_Constraints: None
Use_Constraints:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey and Fairbanks Fodar as the originator(s) of the dataset and in products derived from these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: Browse_Graphic_File_Description:
Browse image of the orthomosaic generated from photogrammetry and aerial images acquired over Barter Island, Alaska July 05 2015.
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
Acknowledgment of the USGS Coastal and Marine Resources and Hazards Program and Fairbanks Fodar as a data source would be appreciated in products developed from these data.
Native_Data_Set_Environment:
Environment as of Metadata Creation: Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5 (Build 6491) Service Pack N/A (Build N/A)
Cross_Reference:
Citation_Information:
Originator: Agisoft
Publication_Date: 2015
Title: Agisoft Photoscan User Manual: Professional Edition
Series_Information:
Series_Name: manual
Issue_Identification: Version 1.2
Online_Linkage: http://www.agisoft.com/pdf/photoscan-pro_1_2_en.pdf
Cross_Reference:
Citation_Information:
Originator: Nolan, M.
Originator: Larsen, C.F.
Originator: Sturm, M.
Publication_Date: 2015
Title:
Mapping snow-depth from manned-aircraft on landscape scales at centimeter resolution using Structure-from-Motion photogrammetry
Series_Information:
Series_Name: The Cryosphere
Issue_Identification: Vol. 9, pp. 1445-1463
Online_Linkage: https://doi.org/10.5194/tc-9-1445-2015
Cross_Reference:
Citation_Information:
Originator: Gibbs, A.E.
Originator: Nolan, M.
Originator: Richmond, B.R.
Publication_Date: 2016
Title:
Evaluating changes to arctic coastal bluffs using repeat aerial photography and structure-from-motion elevation models
Series_Information:
Series_Name: Proceedings from 2015 Coastal Sediments Conference
Issue_Identification: CD-ROM; 14 pp
Online_Linkage: https://doi.org/10.1142/9789814689977_0080
Cross_Reference:
Citation_Information:
Originator: American Society for Photogrammetry and Remote Sensing (ASPRS)
Publication_Date: 2015
Title: ASPRS Accuracy Standards for Digital Geospatial Data
Series_Information:
Series_Name: manual
Issue_Identification: Edition 1, Version 1.0
Online_Linkage: doi: 10.14358/PERS.81.3.A1-A26
Cross_Reference:
Citation_Information:
Originator: Gibbs, A.E.
Originator: Nolan, M.
Originator: Richmond, B.R.
Originator: Snyder, A.G
Originator: Erikson, L.H.
Publication_Date: 2019
Title:
Assessing patterns of annual change to permafrost bluffs along the North Slope coast of Alaska using high-resolution imagery and elevation models
Series_Information:
Series_Name: Geomorphology
Issue_Identification: TBD
Online_Linkage: https://doi.org/
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Horizontal and vertical accuracies of the orthoimagery and DSMs were evaluated using photo-identifiable checkpoints and elevation checkpoints collected by USGS in 2016. Only 3 stable checkpoints were identifiable and available for evaluating accuracy. Accuracy assessment values reported are the mean residual between surveyed ground control checkpoints and image derived values. See Nolan and others (2015), Gibbs and others (2016), and Gibbs and others (2019), for comprehensive discussion of the accuracy, error analysis, and known anomalies.
Logical_Consistency_Report:
Data quality has been assessed relative to checkpoints collected in September 2016.
Completeness_Report:
This dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Positional (horizontal) accuracy has been determined by identifying ground control points visually and comparing their location to the GPS-collected ground control. The horizontal radial root mean square error (RMSE; ASPRS, 2015) of the data is 8 cm.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
A formal accuracy assessment of the vertical positional information in the data set is not applicable.
Lineage:
Process_Step:
Process_Description:
Data acquisition - Fairbanks Fodar collected aerial photographs on July 05 2015, using a small aircraft (Cessna 170B) platform. The aerial survey was planned so flight lines and photograph frequency provided 60 percent side lap and 80 percent end lap photo coverage along with flying height of approximately 320 m, resulting in an 8-cm ground sample distance (GSD) of the orthophotomosaics. A Nikon D800E with a 24 mm Nikkor f/1.4 lens was used to collect 36-megapixel photographs, in Joint Photographic Experts Group (JPEG) or Nikon Electronic Format (NEF), depending on location. Photographs were collected at 1- to 3-second intervals. On-board global positioning system (GPS) data were acquired by a Trimble 5700 with roof-mounted antenna approximately 1 m above the camera, collecting at 5 Hertz. Each camera shutter trip placed an event marker onto the GPS datastream for precise timing and location.
Process_Date: 2015
Process_Step:
Process_Description:
Data processing - Aerial survey GNSS data were processed using Waypoint's Grafnav commercial GNSS software using GPS constellation. Each project was processed using either post-processing kinematic (PPK) or precise point positioning (PPP) methods, depending on the quality of the solution, which was primarily dependent on the distance from Continually Operating Reference Stations (CORS), such that the flight resulted in data with better than 10 cm separation in forward and reverse trajectory solutions. GPS data were processed to the World Geodetic System 1984 (WGS84) European Petroleum Survey Group Well Known Identification Number (EPSG) 32607 and the WGS84 Ellipsoid. Photographs were individually processed for optimum contrast and exposure using Adobe Camera Raw. To accommodate the large data acquisition volumes, most photographs were shot and processed to JPEG format. Aerial survey GPS data (event marker coordinates) were manually correlated to image filenames using the image timestamp to create a camera external orientation file for import into Agisoft Photoscan Professional (Photoscan) software. The external orientation file provides the X, Y, Z position of the camera for each photograph taken during the survey.
Process_Date: 2015
Process_Step:
Process_Description:
Photogrammetry - Aerial stereophotographs were imported into the photogrammetric software, which uses a Structure-from-Motion (SfM) algorithm to create a three-dimensional terrain model from the stereo-imagery. The terrain model was then used to orthometrically correct the photos and produce the final orthoimage mosaic in Photoscan. Within the Photoscan software application, standard workflow steps were followed: photo-alignment, alignment optimization, dense point cloud building, mesh creation, DSM and orthoimage creation, and exporting the results.
Process_Date: 2015
Process_Step:
Process_Description:
Orthoimage mosaics were adjusted horizontally to the coordinates of a single GCP as measured in September 2016, in order to adjust the data from a relative coordinate system to a fixed ground-based geodetic coordinate system (WGS84 UTM Zone 7). See Gibbs and others (2019) for a thorough explanation of methodology.
Process_Date: 2016
Process_Step:
Process_Description: Title correction was made to a keyword thesaurus.
Process_Date: 20200901
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Susan A. Cochran
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Address:
Address_Type: mailing and physical
Address: 2885 Mission St.
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: USA
Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov
Process_Step:
Process_Description:
Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed.
Process_Date: 20201019
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: VeeAnn A. Cross
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700 x2251
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Process_Step:
Process_Description:
Performed minor edits to the metadata to correct typos. No data were changed
Process_Date: 20211013
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Susan A. Cochran
Contact_Position: Geologist
Contact_Address:
Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Contact_Voice_Telephone: 831-460-7545
Contact_Electronic_Mail_Address: scochran@usgs.gov
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 28654
Column_Count: 120297
Vertical_Count: 3
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: Universal Transverse Mercator
Universal_Transverse_Mercator:
UTM_Zone_Number: 7
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -141.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 7.69418999995741E-02
Ordinate_Resolution: 7.69418999995741E-02
Planar_Distance_Units: Meter
Geodetic_Model:
Horizontal_Datum_Name: D_WGS_1984
Ellipsoid_Name: WGS_1984
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257223563
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Attribute Table
Entity_Type_Definition:
Table containing attribute information associated with the data set.
Entity_Type_Definition_Source: Producer defined
Attribute:
Attribute_Label: Band_1
Attribute_Definition: Red band
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute:
Attribute_Label: Band_2
Attribute_Definition: Green band
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Attribute:
Attribute_Label: Band_3
Attribute_Definition: Blue band
Attribute_Definition_Source: Producer defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 255
Overview_Description:
Entity_and_Attribute_Overview:
A GeoTIFF file containing the 3-band orthophotomosaic for July 05, 2015.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey (USGS) and Fairbanks Fodar
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey - ScienceBase
Contact_Address:
Address_Type: mailing and physical address
Address: Denver Federal Center, Building 810, Mail Stop 302
City: Denver
State_or_Province: CO
Postal_Code: 80225
Contact_Voice_Telephone: 1-888-275-8747
Contact_Electronic_Mail_Address: sciencebase@usgs.gov
Resource_Description:
A GeoTIFF file containing the 3-band orthophotomosaic for July 05, 2015. A browse graphic is also available for download.
Distribution_Liability:
Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GeoTIFF
Format_Version_Number: Global Mapper v. 19.0
Format_Specification: 8-bit GeoTIFF
Format_Information_Content:
An 8-bit GeoTIFF with LZW compression, a browse thumbnail .jpg image, and FGDC CSDGM metadata
File_Decompression_Technique: LZW compression
Transfer_Size: 1584
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information: Access_Instructions:
The first Network Resource Name link is to the page containing the data. The second is a direct link to download a zipped file with the data and metadata. The final link is to the publication landing page.
Fees: none
Metadata_Reference_Information:
Metadata_Date: 20211013
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Contact_Person: PCMSC Science Data Coordinator
Contact_Address:
Address_Type: Mailing and Physical
Address: 2885 Mission Street
City: Santa Cruz
State_or_Province: CA
Postal_Code: 95060
Country: United States
Contact_Voice_Telephone: 831-427-4747
Contact_Electronic_Mail_Address: pcmsc_data@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_P9964TKX/BTI_Ortho_20150705.html>
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