Unalakleet: This digital data distribution package provides digitized, historic shorelines that are proximal to the community of Unalakleet. Within each package are polylines that provide shoreline position data. Each file represents a digitized shoreline from a specific point in time. Files are named and organized by year.
Staff, DGGS, 2015, Alaska shoreline change tool: Digital Data Series DDS 9, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
This is a vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest .00000001
Ordinates (y-coordinates) are specified to the nearest .00000001
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS 80.
The semi-major axis of the ellipsoid used is 6378137.
The flattening of the ellipsoid used is 1/298.257222101.
meters
Dates are given in MO/DA/YEAR
Names are given in first name initial and then full last name (ex: A. Gould, N. Kinsman).
free text
See associated reference for a complete discussion of the various shoreline indicators and the advantages and disadvantages of each type.
Dates are given as MO/YEAR
free text
The database and projected shoreline visualization tool are maintained by Staff at DGGS, and were initially developed by: Gould, A.I., Kinsman, N.E.M., and Hendricks, M.D. This publication was funded with qualified outer continental shelf oil and gas revenues by the Coastal Impact Assistance Program, U.S. Fish & Wildlife Service, U.S. Department of the Interior. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Government. Special thanks to the USGS Pacific Coastal and Marine Science Center for their insight and initial contributions to the Alaska shoreline change database.
(907)451-5020 (voice)
dggsgis@alaska.gov
The shoreline positions displayed by the Alaska Shoreline Change Tool web map are presented as a convenience and are intended to be a visualization of a first-order estimation of shoreline change throughout the state. This data set was created as a means to organize and provide public access to the digitized shoreline files.
Boak, E.H., and Turner, I.L., 2005, Shoreline definition and detection - A review: Journal of Coastal Research v. 21, no. 4, Coastal Education & Research Foundation, Coconut Creek, FL.
Dolan, Robert, Fenster, M.S, and Holme, S.J, 1991, Temporal analysis of shoreline recession and accretion:: Journal of Coastal Research v. 7, no. 3, Coastal Education & Research Foundation, Coconut Creek, FL.
Thieler, E.E., Himmelstoss, E.A., Zichichi, J.L., and Ergul, Ayhan, 2008, The digital shoreline analysis system (DSAS) version 4.0 - An ArcGIS extension for calculating shoreline change: Open-File Report OF 2008-1278, U.S. Geological Survey, United States.Online Links:
Data sources used in this process:
Gould, A.I., Kinsman, N.E.M., and Hendricks, M.D., 2015, Guide to projected shoreline positions in the Alaska shoreline change tool: Miscellaneous Publication MP 158, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Kinsman, N.E.M., and Gould, A.I., 2014, Contemporary shoreline retreat rates at Meshik in Port Heiden, Alaska: Preliminary Interpretive Report PIR 2014-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
DGGS staff have performed visual qualitative assessment of each shoreline file to ensure consistency between the digitized lines and originating images.
Horizontal shoreline vector location uncertainties are shown in the UNCERTAINT field with each shoreline shapefile. These accuracies are dependent on a number of variables. The details of their calculation are explained in the associated publications: Gould, A.I., Kinsman, N.E.M., and Hendricks, M.D., 2015, Guide to projected shoreline positions in the Alaska shoreline change tool: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication 158, 11 p. doi:10.14509/29503 and Kinsman, N.E.M., and Gould, A.I., 2014, Contemporary shoreline retreat rates at Meshik in Port Heiden, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2014-4, 21 p. doi:10.14509/27321
Gaps in shoreline data occur where a shoreline indicator is not identifiable (example: poorly defined shoreline indicator, cloud cover in imagery, etc.) or does not exist (example: tidal inlet, revetment or other coastal structure).
not applicable
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
- Use_Constraints:
- Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
DDS 9
The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.
| Data format: | Shapefiles |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/29504> |
(907)451-5020 (voice)