Record-breaking height for 8000-year-old tsunami in the North Atlantic

Stein Bondevik, Jan Mangerud, Sue Dawson, Alastair Dawson, Øystein Lohne

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)

Abstract

One of the largest Holocene sub‐marine slides mapped on Earth is the Storegga slide offshore Norway [Bugge, 1987] (Figure 1). Approximately 3500 km3 material slid out and generated a huge tsunami dated to about 7300 14C yr BP [Bondevik et al., 1997a], or ca 8150 calendar years BP. The tsunami is known from onshore deposits in Norway [Bondevik et al., 1997a], on the Faroe Islands [Grauert et al., 2001], and in Scotland [Dawson et al., 1993]. Of these, the tsunami deposits in western Norway reaches the highest elevation, indicating a runup of 10–12 m. In this article, we demonstrate that at the Shetland Islands between Norway and Scotland (Figure 1), this tsunami reached onshore heights at least 20 m above the sea level of that time.
Original languageEnglish
Pages (from-to)289-293
Number of pages6
JournalEos
Volume84
Issue number31
DOIs
Publication statusPublished - 5 Aug 2003

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