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Regional shoreline change and coastal erosion hazards in Arctic Alaska

By:
, , ,
DOI: 10.1061/41185(417)24

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Abstract

Historical shoreline positions along the mainland Beaufort Sea coast of Alaska were digitized and analyzed to determine the long-term rate of change. Average shoreline change rates and ranges from 1947 to the mid-2000s were determined every 50 meters between Barrow and Demarcation Point, at the U.S.-Canadian border. Results show that shoreline change rates are highly variable along the coast, with an average regional shoreline change rate of-2.0 m/yr and localized rates of up to -19 m/yr. The highest erosion rates were observed at headlands, points, and associated with breached thermokarst lakes. Areas of accretion were limited, and generally associated with spit extension and minor beach accretion. In general, erosion rates increase from east to west, with overall higher rates east of Harrison Bay. ?? 2011 ASCE.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Regional shoreline change and coastal erosion hazards in Arctic Alaska
ISBN:
9780784411858
DOI:
10.1061/41185(417)24
Year Published:
2011
Language:
English
First page:
258
Last page:
272
Number of Pages:
15
Conference Title:
2011 Solutions to Coastal Disasters Conference
Conference Location:
Anchorage, AK
Conference Date:
25 June 2011 through 29 June 2011