Shoreline change at Alaska coastal communities, Chefornak, Alaska
Description
The Division of Geological & Geophysical Surveys has analyzed long-term shoreline change at 48 Alaska communities. Shoreline datasets were compiled from previously published U.S. Geological Survey assessments and created from historical and recent aerial images by the Alaska Division of Geological & Geophysical Surveys. Shorelines were analyzed to calculate shoreline change rates every 25 meters along coastlines and tidally influenced riverbanks using the Digital Shoreline Analysis System (DSAS; Himmelstoss and others, 2018). The geodatabase for each community includes shoreline positions, the alongshore baseline used to cast transects, and transects that include shoreline change rates and statistics. All files can be downloaded free of charge from the Alaska Division of Geological & Geophysical Surveys website (http://doi.org/10.14509/30552).
Resources
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Description |
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vector data |
http://dx.doi.org/10.14509/30552 |
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https://doi.org/10.14509/30552 |
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https://doi.org/10.14509/29548 |
Tags
- topography
- aerial photography
- alaska
- engineering
- sea level changes
- inundation
- floodplain
- aerial
- marine geology
- environmental
- geology
- dggs
- chefornak
- coastal
- erosion
- flood
- shoreface
- water
- hazards
- emergency preparedness
- storm surge
- surface
- outreach
- tides
- shelf