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A review on onshore tsunami deposits along the Atlantic coasts
Earth-Science Reviews ( IF 12.1 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.earscirev.2020.103441
Pedro J.M. Costa , Sue Dawson , Ricardo S. Ramalho , Max Engel , Francisco Dourado , Ivana Bosnic , César Andrade

Abstract This paper reviews the evidence for onshore sedimentary imprints of tsunami inundation known from the geological record of the Atlantic basin. The central aim of the paper is to offer a broad overview on the main deposits and key localities that have been documented along the Atlantic coastlines, and which attest to the local or regional impact of tsunamis during historical, pre-historical and recent geological times. Considerable detail is devoted to summarising key diagnostic criteria used to identify the deposits as tsunami-derived, and to set each deposit in its own unique geomorphological setting and context, always referring to the latest scientific knowledge of the events that generated them. The paper also discusses the relationships between the different tsunamigenic sources that concurred to the formation of the deposits, as well as critical information on magnitude and frequency, as inferred from the sedimentary responses preserved in the sediment archives. Documented case studies range from the well-studied landslide-triggered and earthquake-triggered Storegga and 1755 Lisbon tsunamis, respectively, to collapse- and eruption-triggered tsunamis in the Atlantic archipelagos, to other less well-known events in the south Atlantic, Caribbean and Arctic. Despite its less frequent tsunami recurrence, the Atlantic coastal stratigraphy presents some world-class case studies and outstanding outcrops, from which critical knowledge can be gained with respect to some of the most enigmatic aspects of tsunami science.

中文翻译:

大西洋沿岸陆上海啸沉积物综述

摘要 本文回顾了从大西洋盆地的地质记录中得知的海啸淹没陆上沉积印记的证据。该论文的中心目的是对大西洋沿岸记录的主要矿床和关键地点进行广泛概述,并证明海啸在历史、史前和近代地质时期对当地或区域的影响。相当多的细节致力于总结用于将沉积物识别为海啸衍生的关键诊断标准,并将每个沉积物置于其自己独特的地貌环境和背景中,始终参考产生它们的事件的最新科学知识。该论文还讨论了与沉积物形成一致的不同海啸源之间的关系,以及从保存在沉积物档案中的沉积响应推断出的关于幅度和频率的关键信息。记录在案的案例研究范围从分别经过充分研究的滑坡触发和地震触发的 Storegga 和 1755 年里斯本海啸,到大西洋群岛的坍塌和喷发触发的海啸,再到南大西洋、加勒比海地区其他鲜为人知的事件和北极。尽管海啸复发的频率较低,大西洋沿岸地层学提供了一些世界级的案例研究和杰出的露头,从中可以获得关于海啸科学一些最神秘方面的关键知识。记录在案的案例研究范围从分别经过充分研究的滑坡触发和地震触发的 Storegga 和 1755 年里斯本海啸,到大西洋群岛的坍塌和喷发触发的海啸,再到南大西洋、加勒比海地区其他鲜为人知的事件和北极。尽管海啸复发的频率较低,大西洋沿岸地层学提供了一些世界级的案例研究和杰出的露头,从中可以获得关于海啸科学一些最神秘方面的关键知识。记录在案的案例研究范围从分别经过充分研究的滑坡触发和地震触发的 Storegga 和 1755 年里斯本海啸,到大西洋群岛的坍塌和喷发触发的海啸,再到南大西洋、加勒比海地区其他鲜为人知的事件和北极。尽管海啸复发的频率较低,大西洋沿岸地层学提供了一些世界级的案例研究和杰出的露头,从中可以获得关于海啸科学一些最神秘方面的关键知识。
更新日期:2021-01-01
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