Matt Nolan
Ann E. Gibbs
Alexander G. Snyder
20221115
Tile index for Alaska coastal orthoimagery and elevation data: Icy Cape to Cape Prince of Wales, 2016
1.0
polygon shapefile
data release
DOI:10.5066/P9PGJNE9
Pacific Coastal and Marine Science Center, Santa Cruz, CA
U.S. Geological Survey
https://doi.org/10.5066/P9PGJNE9
https://www.sciencebase.gov/catalog/item/636c9e13d34ed907bf6b315a
Matt Nolan
Ann E. Gibbs
Alexander G. Snyder
2022
Alaska coastal orthoimagery and elevation data: Icy Cape to Cape Prince of Wales, 2016
1.0
raster and vector digital files
data release
DOI:10.5066/P9PGJNE9
Pacific Coastal and Marine Science Center, Santa Cruz, CA
U.S. Geological Survey
suggested citation: Nolan, M., Gibbs, A.E., and Snyder, A.G., 2022, Alaska coastal orthoimagery and elevation data: Icy Cape to Cape Prince of Wales, 2016: U.S. Geological Survey data release, https://doi.org/10.5066/P9PGJNE9.
https://doi.org/10.5066/P9PGJNE9
This part of the data release presents a shapefile that includes a spatial index of orthoimagery and elevation data describing the Alaskan coastline from Icy Cape to Cape Prince of Wales. The data products referenced in this index include orthoimagery, digital surface models, and elevation point clouds which were generated from aerial imagery using structure-from-motion methods. Fairbanks Fodar, a contracted mapping service, collected the aerial imagery in 2016 and created all of the data products referenced here. Due to the enormous extent of this dataset, the products are split into separate files with more manageable sizes. Each polygon in this shapefile index provides a geographic outline of a data file’s coverage, corresponding file name, and data type. Additionally, the orthoimagery and digital surface model files include a link to stream the file using any software that supports access to cloud optimized geotiffs (COGs).
The tile index enables the user to determine which files describe a specific area of interest without needing to download the entire dataset. Fairbanks Fodar was contracted by the USGS to acquire new airborne data to process into orthoimagery, digital surface models, and elevation point clouds.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in Esri format, this metadata file may include some Esri-specific terminology.
20160829
20160904
ground condition at time data were collected
None planned
-167.63080825
-161.00513945
70.33433589
65.78673484
ISO 19115 Topic Category
oceans
ImageryBaseMapsEarthCover
Data Categories for Marine Planning
Physical habitats and geomorphology
USGS Thesaurus
structure from motion
coastal processes
geospatial datasets
remote sensing
aerial photography
image collections
geomorphology
earth sciences
geography
coastal processes
Marine Realms Information Bank (MRIB) keywords
coast
beach
cliff
beach ridge
shore
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Pacific Coastal and Marine Science Center
PCMSC
USGS Metadata Identifier
USGS:636c9e13d34ed907bf6b315a
Geographic Names Information System (GNIS)
State of Alaska
Icy Cape
Chukchi Sea
Wainwright
Point Lay
Kasegaluk Lagoon
Cape Sabine
Sitkok Point
Cape Beaufort
Cape Lisburne
Wevok
Cape Lewis
Kilikralik Point
Marryat Inlet
Cape Prince of Wales
Shishmaref
Kotzebue Sound
Kotzebue
Kivalina
Point Hope
Cape Krusenstern
Deering
Cape Espenberg
Cape Thompson
None
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.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
https://www.sciencebase.gov/catalog/file/get/636c9e13d34ed907bf6b315a?name=Tile_Index_Example.jpg&allowOpen=true
Example of the Tile Index symbolized by data type and an example of an orthoimagery tile.
JPEG
Data collection was funded by the U.S. Geological Survey. Data acquisition and processing were conducted by Fairbanks Fodar.
Microsoft Windows 10, Agisoft Photoscan, ArcMap 10.6, QGIS Desktop 3.2.
M. Nolan
C. Larsen
M. Sturm
2015
Mapping snow depth from manned aircraft on landscape scales at centimeter resolution using structure-from-motion photogrammetry
Nolan, M., Larsen, C., and Sturm, M., 2015, Mapping snow depth from manned aircraft on landscape scales at centimeter resolution using structure-from-motion photogrammetry: The Cryosphere, v. 9, p. 1445–1463, https://doi.org/10.5194/tc-9-1445-2015.
https://doi.org/10.5194/tc-9-1445-2015
Alexander G. Snyder
Ann E. Gibbs
2019
National assessment of shoreline change: A GIS compilation of vector shorelines and associated shoreline change data for the north coast of Alaska, Icy Cape to Cape Prince of Wales
Snyder, A.G., and Gibbs, A.E., 2019, National assessment of shoreline change: A GIS compilation of updated vector shorelines and associated shoreline change data for the north coast of Alaska, Icy Cape to Cape Prince of Wales: U.S. Geological Survey data release, https://doi.org/10.5066/P9H1S1PV.
https://doi.org/10.5066/P9H1S1PV
Ann E. Gibbs
Alexander G. Snyder
Bruce M. Richmond
2019
National Assessment of Shoreline Change—Historical Shoreline Change Along the North Coast of Alaska, Icy Cape to Cape Prince of Wales
Gibbs, A.E., Snyder, A.G., and Richmond, B.M., 2019, National assessment of shoreline change—Historical shoreline change along the north coast of Alaska, Icy Cape to Cape Prince of Wales: U.S. Geological Survey Open-File Report 2019–1146, 52 p., https://doi.org/10.3133/ofr20191146.
https://doi.org/10.3133/ofr20191146
Jacquelyn R. Overbeck
Richard M. Buzard
Mark M. Turner
Katie Y. Miller
Roberta J.T. Glenn
2020
Shoreline change at Alaska coastal communities: Alaska Division of Geological & Geophysical Surveys Report of Investigation
Overbeck, J.R., Buzard, R.M., Turner, M.M., Miller, K.Y., and Glenn, R.J.T., 2020, Shoreline change at Alaska coastal communities: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2020-10, 29 p., 47 sheets, https://doi.org/10.14509/30552.
https://doi.org/10.14509/30552
Quantum Spatial, Incorporated (QSI)
2019
Fairbanks Fodar Assessment
Additional information about this report, which describes the formal evaluation of accuracy performed on the data against vertical control points and existing lidar data, can be obtained by contacting Ann Gibbs (agibbs@usgs.gov).
No formal accuracy tests were conducted.
No formal logical accuracy tests were conducted. The boundaries were created as reference that would allow for an efficient means of navigating the data in the associated data release. Therefore, accuracy of the data boundaries was intentionally reduced to better serve the intended purpose.
Index polygons were generated for each orthomimagery, digital surface model, and point cloud file.
A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. The index polygons describe the approximate limits of the data in each file. Orthoimagery and digital surface models also include No Data values beyond the polygons depicted here. The polygons were also simplified to reduce the number of vertices and therefore represent an approximate outline of the data, which may exceed the polygon by up to 100 meters.
Not applicable
Outlines of the data were generated using ArcMap 10.6. Individual files were added to a Mosaic Dataset, then the data outlines were generated using the Build Footprints tool. The footprints were exported to a shapefile and the Simplify Polygon tool was used to reduce the number of vertices and therefore the file size.
20220519
Alexander Snyder
U.S. Geological Survey
Oceanographer
Mailing
2885 Mission Street
Santa Cruz
CA
95060
831-427-4450
agsnyder@usgs.gov
Vector
G-polygon
474
Universal Transverse Mercator
3
0.999600
-165.000000
0.000000
500000.000000
0.000000
row and column
0.001
0.001
METERS
NAD83_National_Spatial_Reference_System_2011
Geodetic Reference System 80
6378137.000000
298.257222101
Tile_Index.shp Attribute Table
Table containing attribute information associated with the dataset.
Producer defined
FID
Index number unique to each record in the attribute table.
Assigned by ArcMap
0
473
Shape
Defines what type of spatial information is associated with this record (for example, polyline, polygon, point).
Assigned by ArcMap 10.6
Polygon
An object that stores its geographic representation—a series of x and y coordinate pairs that enclose an area—as one of its properties (or fields) in the row in the database.
ArcMap 10.6
Name
Name of the orthoimagery, digital surface model, or point cloud file that corresponds to the polygon, which represents the geographic extent of the data in the file.
Producer defined.
Filenames are a unique identifier that describes certain attributes of the file, including the region, processing group, data type, grid size, and format. For example, the filename ‘shish_C_ortho_10cm-0-4x_cog’ refers to data that is somewhat close to the town of Shishmaref (‘shish’), processed with other files in group ‘C’, contains orthoimagery (‘ortho’) data, represented as a raster with cell size ‘10cm’, uniquely identified as ‘0-4’, and stored as a Cloud Optimized GeoTIFF (‘cog’).
DataType
Describes the type of data described by the data outline polygon and the other attributes.
Producer defined.
Digital_Surface_Model
Raster grid that describes the elevation of the structures and terrain of a specific area.
Producer defined.
Point_Cloud
Point cloud that describes the elevation of the structures and terrain of a specific area.
Producer defined.
Orthoimagery
Georeferenced imagery represented as a 4-band raster grid with red/green/blue/alpha values.
Producer defined.
COG_URL
URL that points to the file in cloud storage, allowing users to view the file by streaming it to any software that supports cloud optimized geotiffs, instead of downloading the file to a local drive.
Producer defined.
Unique URL is made up of two parts: the cloud server location and the individual filename.
Polygons in this shapefile represent the outline of data available in other parts of this data release. Users are meant to use the index shapefile to find which files will correspond to their area of interest.
Producer defined
U.S. Geological Survey - ScienceBase
mailing and physical
Denver Federal Center, Building 810, Mail Stop 302
Denver
CO
80225
1-888-275-8747
sciencebase@usgs.gov
These data are available in shapefile format contained in a single zip file.
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.
Shapefile
ArcMap 10.6
Esri polygon shapefile
Polygons in this shapefile represent the outline of data available in other parts of this data release.
Use 7zip or equivalent.
0.16
https://www.sciencebase.gov/catalog/file/get/636c9e13d34ed907bf6b315a?facet=Tile_Index
https://www.sciencebase.gov/catalog/item/636c9e13d34ed907bf6b315a
https://doi.org/10.5066/P9PGJNE9
Data can be downloaded using the Network Resource Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release.
None.
These data can be viewed with Geographic Information Systems (GIS) software or other software capable of displaying geospatial raster data.
20221115
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998