Tracing the Alkinoos Harbor of ancient Kerkyra, Greece, and reconstructing its paleotsunami history

Tracing the Alkinoos Harbor of ancient Kerkyra, Greece, and reconstructing its paleotsunami history
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追踪古希腊克基拉岛的阿尔基努斯港并重建其古海啸历史

DOI:
10.1002/gea.21609
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发表时间:
2018
期刊:
影响因子:
1.7
通讯作者:
A. Vött
A. Vött
中科院分区:
地球科学4区
文献类型:
--
作者:
Finkler;Fischer;Rigakou;Metallinou;Hadler;A. Vött

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本研究采用地貌学和沉积学的方法对古科孚岛的Alkinoos港进行了调查,以重建古港的建造、使用时期和空间范围以及当地的古环境变化。我们提出了沉积学证据的阿尔基努斯港,显示疏浚活动的明显迹象。尽管该港口从远古时期就开始被使用,但基于振动测深、地球物理勘探、电导率测井、微动物研究和地球化学分析的一组古环境指标显示,在公元1世纪至6世纪之间,一个封闭的、受保护的罗马港口的典型沉积物被使用。此外,沉积学和微动物证据使我们能够区分罗马港口的不同部分。相比之下,前罗马时代的港口和船棚都建在沙滩上。我们的数据揭示了两种不同的与海啸影响有关的地层破坏。这些古海啸发生在公元3世纪到6世纪之间,以及公元5世纪到6世纪之间,最有可能分别与公元365年(克里特岛)和公元6世纪(伯罗奔尼撒)的超区域事件有关。阿尔基诺斯港被证明是重建全新世晚期人类与环境相互作用的杰出地理档案。
In this study, the Alkinoos Harbor of ancient Corfu was investigated by means of geomorphological and sedimentological methods in order to reconstruct the ancient harbor's construction, its period of use and spatial extent, and local paleoenvironmental changes. We present sedimentological evidence for the Alkinoos Harbor that shows distinct signs of dredging activities. Although the harbor must have been in use from the Archaic period onwards, a set of paleoenvironmental proxies based on vibracoring, geophysical prospection, electrical conductivity logging, microfaunal studies, and geochemical analyses revealed typical sediments of a closed, protected Roman harbor that was in use between the 1st and 6th century A.D. In addition, sedimentological and microfaunal evidence allowed us to differentiate between different parts of the Roman harbor. In contrast, the pre‐Roman harbor and its shipsheds were built on a sandy seashore. Our data revealed two distinct stratigraphic disruptions related to tsunamigenic impact. These paleotsunamis were dated between the 3rd and 6th century A.D. and between the 5th and 6th century A.D., most probably correlating with the A.D. 365 (Crete) and 6th century A.D. (Peloponnese) supraregional events, respectively. The Alkinoos Harbor turned out to be an outstanding geoarchive to reconstruct human‐environment interactions during the late Holocene.
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