Engineering Challenges and Options in Remediation and Prevention of Permafrost Coastal Erosion

Min Liew, Ming Xiao

Research output: Contribution to journalConference article

Abstract

Erosion along the permafrost coasts has been accelerating, threatening the wellbeing of many Alaskan communities. This paper synthesizes and presents the engineering challenges, the costs of erosion control measures, and the remediation and prevention measures for permafrost coastal erosion through case histories. The review and synthesis of the state-of-the-practice of permafrost coastal erosion controls can be used to identify measures and construction materials that are proven effective in Arctic coasts. The synthesis shows that revetments built with rocks have the least reported failures and are the most common measures applied along the permafrost coasts. For seawalls, bulkheads, and groin systems, reported failures are mostly associated with displacement, deflection, settlement, vandalism, and material ruptures. The effectiveness of beach nourishment is inconclusive; only one successful beach nourishment project is reported in Alaska, but it is located outside the permafrost region. This study also shows that the unit cost of the erosion control measures in Alaska has continued to increase over the past 40 years.

Original languageEnglish (US)
Pages (from-to)881-889
Number of pages9
JournalGeotechnical Special Publication
Volume2020-February
Issue numberGSP 318
DOIs
StatePublished - Jan 1 2020
EventGeo-Congress 2020: Geotechnical Earthquake Engineering and Special Topics - Minneapolis, United States
Duration: Feb 25 2020Feb 28 2020

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All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Architecture
  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

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