DGGS Staff
2015
Alaska shoreline change tool
digital data
Digital Data Series
DDS 9
Fairbanks, Alaska, United States
Alaska Division of Geological & Geophysical Surveys
http://dx.doi.org/10.14509/29504
http://dx.doi.org/10.14509/shoreline
Coastlines are dynamic features that change shape and position on a range of timescales. As a result of this variability, many coastal communities in Alaska must carefully consider patterns of coastal erosion and/or accretion to appropriately plan for the future. Until now, a lack of available information and resources related to shoreline positional data has created challenges in assessing and planning for coastal hazards such as erosion. To address this identified data need, the Alaska Division of Geological & Geophysical Surveys (DGGS) has created the Alaska Shoreline Change Tool, an interactive map that displays historical and projected shoreline positions. This new tool will improve hazard assessments and aid in local management decisions. The Alaska Shoreline Change Tool contains the best available information for shoreline change analysis in Alaska. These data come from many sources and include contributions from shoreline mapping projects conducted by numerous investigators. This digital data distribution package provides digitized, historic shorelines that are proximal to the community of Port Heiden
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.
> Port Heiden: This digital data distribution package provides digitized, historic shorelines that are proximal to the community of Port Heiden. 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.
1957
2013
publication date
As needed
-158.694530
-158.675001
56.941398
56.887814
ISO 19115 Topic Category
geoscientificInformation
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).
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.
Alaska Division of Geological & Geophysical Surveys
GIS Manager
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
(907)451-5020
dggsgis@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays
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.
Gould, A.I.
Kinsman, N.E.M.
Hendricks, M.D.
2015
Guide to projected shoreline positions in the Alaska shoreline change tool
Miscellaneous Publication
MP 158
Fairbanks, Alaska, United States
Alaska Division of Geological & Geophysical Surveys
11 p
http://dx.doi.org/10.14509/29503
Kinsman, N.E.M.
Gould, A.I.
2014
Contemporary shoreline retreat rates at Meshik in Port Heiden, Alaska
Preliminary Interpretive Report
PIR 2014-4
Fairbanks, Alaska, United States
Alaska Division of Geological & Geophysical Surveys
21 p
http://dx.doi.org/10.14509/27321
DGGS staff have performed visual qualitative assessment of each shoreline file to ensure consistency between the digitized lines and originating images.
not applicable
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).
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
Boak, E.H.
Turner, I.L.
2005
Shoreline definition and detection - A review
Journal of Coastal Research
v. 21, no. 4
Coconut Creek, FL
Coastal Education & Research Foundation
paper
2005
publication date
Boak, E.H. and Turner, I.L., 2005
historical shoreline compilation
Dolan, Robert
Fenster, M.S
Holme, S.J
1991
Temporal analysis of shoreline recession and accretion:
Journal of Coastal Research
v. 7, no. 3
Coconut Creek, FL
Coastal Education & Research Foundation
paper
1991
publication date
Dolan, Robert and others, 1991
historical shoreline compilation
Thieler, E.E.
Himmelstoss, E.A.
Zichichi, J.L.
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
United States
U.S. Geological Survey
http://dggs.alaska.gov/pubs/id/29507
http://woodshole.er.usgs.gov/project-pages/DSAS/version4/
ArcGIS extension
2008
publication date
Thieler, E.E. and others, 2008
historical shoreline compilation
Historical shoreline compilation - This database was initiated by first collecting historical aerial photographs and satellite images. Non-orthorectified images were orthorectified by the Alaska Division of Geological & Geophysical Surveys (DGGS) staff. Shorelines were then digitized in ArcGIS and used with the Digital Shoreline Assessment System (DSAS) to calculate rates of shoreline change and their associated uncertainties.
Boak, E.H. and Turner, I.L., 2005
Dolan, Robert and others, 1991
Thieler, E.E. and others, 2008
2014
Projected shoreline positions - In order to create projected shoreline positions, DGGS staff developed an ArcGIS tool to efficiently determine the location of a future shoreline position. This tool uses the long-term linear regression rate of shoreline change, calculated in DSAS, and projected along the same transect to determine a predicted shoreline position including the uncertainties. These points are connected between transects and smoothed.
2015
Database development - DGGS designed a repository to house these coastal data and developed and interactive map interface that allows users to explore the state to view both historic and projected shoreline positions. The database was designed to readily incorporate shoreline data from other organizations and create projected shorelines. All historic shoreline data is available for download.
2015
vector
Universal Transverse Mercator
4
0.999600
-159
0
500000.000000
0
coordinate pair
.00000001
.00000001
Meters
North American Datum of 1983
GRS 80
6378137
298.257222101
dds9-port-heiden-shoreline
This digital data distribution package provides digitized, historic shorelines that are proximal to the community of Port Heiden. 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.
Alaska Division of Geological & Geophysical Surveys (DGGS)
Port Heiden
UNCERTAINT
Calculated uncertainty for each polyline, see associated reference for discussion of methodology.
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
meters
DATE_
Date of the shoreline
Alaska Division of Geological & Geophysical Surveys (DGGS)
Dates are given in MO/DA/YEAR
Digitizer
Name of the person who digitized the shoreline
Alaska Division of Geological & Geophysical Surveys (DGGS)
Names are given in first name initial and then full last name (ex: A. Gould, N. Kinsman).
Agency
The agency or organization responsible for creating the data.
Alaska Division of Geological & Geophysical Surveys (DGGS)
free text
SIndicator
Shoreline indicator used
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
See associated reference for a complete discussion of the various shoreline indicators and the advantages and disadvantages of each type.
ReleaseDat
When the vectors were added to the database
Alaska Division of Geological & Geophysical Surveys (DGGS)
Dates are given as MO/YEAR
Source
The agency or organization responsible for creating the originating data or image and a brief description of procedures used to prepare the data or image.
Alaska Division of Geological & Geophysical Surveys (DGGS)
free text
Alaska Division of Geological & Geophysical Surveys
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
(907)451-5020
(907)451-5050
dggspubs@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays
Please view our website (http://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
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.
Contact DGGS for current pricing
Shapefiles
http://dx.doi.org/10.14509/29504
Free download
20150904
Alaska Division of Geological & Geophysical Surveys
Metadata Manager
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
(907)451-5020
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys.
http://www.dggs.alaska.gov/metadata/dggs.ext
dggs metadata extensions