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

Record‐breaking height for 8000‐year‐old tsunami in the North Atlantic
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北大西洋8000年前海啸的高度创纪录

DOI:
10.1029/2003eo310001
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发表时间:
2003
期刊:
Eos, Transactions American Geophysical Union
影响因子:
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通讯作者:
Øystein S. Lohne
Øystein S. Lohne
中科院分区:
--
文献类型:
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作者:
S. Bondevik;J. Mangerud;S. Dawson;A. Dawson;Øystein S. Lohne

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地球上绘制的最大的全新世海底滑坡之一是挪威近海的斯托雷加滑坡[布格,1987](图1)。大约3500千米的物质滑出,并引发了一场巨大的海啸,日期约为公元前7300年,或公元前8150历年。海啸是从挪威[Bondevik等人,1997a]、法罗群岛[Grauert等人,2001]和苏格兰[Dawson等人,1993]的陆上沉积物中得知的。其中,挪威西部的海啸沉积物达到最高海拔,表明海平面上升了10-12米。在本文中,我们证明了在挪威和苏格兰之间的设得兰群岛(图1),这场海啸达到了至少高于当时海平面20米的岸上高度。
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.