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Article: Modern erosion rates and loss of coastal features and sites, Beaufort Sea coastline, Alaska.(Report)
- Article from:
- Arctic
- Article date:
- December 1, 2008
- Author:
CopyrightCOPYRIGHT 2008 Arctic Institute of North America of the University of Calgary. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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ABSTRACT. This study presents modern erosion rate measurements based upon vertical aerial photography captured in 1955, 1979, and 2002 for a 100 km segment of the Beaufort Sea coastline. Annual erosion rates from 1955 to 2002 averaged 5.6 m [a.sup.-1]. However, mean erosion rates increased from 5.0 m [a.sup.-1] in 1955-79 to 6.2 m [a.sup.-1] in 1979-2002. Furthermore, from the first period to the second, erosion rates increased at 60% (598) of the 992 sites analyzed, decreased at 31% (307), and changed less than [+ or -] 30 cm at 9% (87). Historical observations and quantitative studies over the past 175 years allowed us to place our erosion rate measurements into a ...