Impact of Holocene tsunamis detected in lagoonal environments on Corfu (Ionian Islands, Greece): Geomorphological, sedimentary and microfaunal evidence
Impact of Holocene tsunamis detected in lagoonal environments on Corfu (Ionian Islands, Greece): Geomorphological, sedimentary and microfaunal evidence
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在科孚岛（希腊爱奥尼亚群岛）泻湖环境中检测到的全新世海啸的影响：地貌、沉积和微型动物证据
DOI：
10.1016/j.quaint.2015.07.019
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发表时间：
2016
影响因子：
2.2
通讯作者：
Metallinou
中科院分区：
文献类型：
--
作者：
Fischer;Finkler;Röbke;Hadler;Willershäuser;Rigakou;Metallinou
在本文中，我们首次提出了古太阳海啸影响科孚(希腊爱奥尼亚群岛)的地貌、沉积和微生物群证据。科孚岛位于一个异常构造应力的地区：在南面，非洲大洋板块正被俯冲到爱琴海板块之下，而在北面，亚得里亚海和欧洲板块形成大陆碰撞带。最近的出版物提供了与地震有关的同震运动的证据，这些运动可能引发极端海浪事件以及相对的海平面波动。在此背景下，我们调查了两个选定的近海地质档案--东部的查利基奥普卢泻湖和科孚岛西南部的科里蒂斯泻湖。我们的结果清楚地表明，科孚岛东部和西南部海岸在全新世期间多次受到古海啸的影响。关于每个研究区的当地地形星座和最近的地貌动力潜力，高能波撞击的证据是基于选定振动点的地层和微型动物群记录以及数值模拟结果。结果表明，科孚岛东部沿海较好地受到南向高能海浪的影响。这种影响很可能与希腊海沟主要地震区的远震有关。相比之下，科孚西南海岸受到来自西部和南部两个方向的影响，濒临灭绝。这种影响可能包括在希腊海沟或埃特纳地区引发的远洋海啸，但也可能是科孚以西陡峭大陆架的当地海底山体滑坡造成的。我们的研究在爱奥尼亚海南部和亚得里亚海进行的古海啸研究之间架起了一座桥梁，并使我们能够更好地区分远洋海啸的影响和地中海东部地震最活跃地区之一的当地引发的事件。
In this paper, we present for the first time geomorphological, sedimentary and microfaunal evidence of palaeotsunami impact on Corfu (Ionian Islands, Greece). The island of Corfu is located in an area of exceptional tectonic stress: towards the south, the African oceanic plate is being subducted underneath the Aegean plate, whereas towards the north, the Adriatic and European plates form a continental collision zone. Recent publications provide evidence of earthquake related co-seismic movements that potentially trigger extreme wave events as well as relative sea level fluctuations. In this context, we investigated two selected near-coast geological archives – the Chalikiopoulou Lagoon in the east and the Korission Lagoon in the southwest of Corfu Island. Our results clearly document that the eastern as well as the southwestern coasts of Corfu were repeatedly affected by palaeotsunami impact during the Holocene. With regard to the local topographical constellation and the recent geomorphodynamic potential of each study area, evidence of high-energy wave impact is based on the stratigraphical and microfaunal record of selected vibracoring sites as well as on numerical modelling results. It is concluded that the eastern coast of Corfu is preferably affected by high-energy wave impacts from a southern direction. Such impacts are most likely related to teletsunamis from the major seismical zone of the Hellenic Trench. In contrast, the southwestern coast of Corfu is endangered by impacts from both western and southern directions. Such impacts may comprise teletsunamis triggered in the Hellenic Trench or the Etna regions but may also be caused by local submarine landslides at the steeply sloping continental shelf directly west of Corfu. Our study builds a bridge between palaeotsunami-research conducted in the southern Ionian Sea and the Adriatic Sea and allows to better discriminate between the effects of teletsunamis and locally triggered events within one of the seismically most active regions in the eastern Mediterranean.
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DOI：
--
发表时间：
2006
期刊：
影响因子：
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作者：
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DOI：
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发表时间：
1999
期刊：
影响因子：
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作者：
S. Mathers;D. Brew;R. Arthurton
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R. Arthurton
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DOI：
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发表时间：
2007
期刊：
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作者：
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DOI：
--
发表时间：
2006
期刊：
影响因子：
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作者：
D. Papanikolaou;M. Alexandri;P. Nomikou
通讯作者：
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影响因子：
2.9
作者：
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通讯作者：
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