Storm surge and tsunami deposits along the Moroccan coasts: state of the art and future perspectives

Khalfaoui, Otmane; Dezileau, Laurent; Mhammdi, Nadia; Medina, F.; Mojtahid, Meryem; Raji, Otmane; Talibi, Hajar El; Mellas, Samira; Degeai, Jean-Philipe; Khalidi, Khalid El; Snoussi, Maria; Zourarah, Bendahhou; Aboumaria, Khadija

doi:10.1007/s11069-023-05940-z

Cited by 5 publications

(1 citation statement)

References 138 publications

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“…A tsunami's sudden onset gives no warning unlike storm surges that are preceded by a period of stormy weather (Khalfaoui et al, 2023). Past hunter fisher gatherer societies in tsunami‐prone regions such as the Northern Pacific have shown a degree of resilience to the impacts of tsunamis, mitigating effects by moving to higher ground (Fitzhugh et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

Sharrocks,

Hill

2023

J Quaternary Science

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The Holocene Storegga tsunami, 8120–8175 cal a bp, resulted in run‐up heights of up to 3–6 m around mainland UK and coincided with a suggested large population decline in the coastally focused Mesolithic population in Northern Britain. At Howick, Northumberland, the site of a Mesolithic settlement, a nearby sediment deposit may be of tsunamigenic origin, but this is uncertain. Here, a numerical model was used to simulate the Storegga tsunami in Northumberland. Two scenarios of relative sea‐level change, and a third incorporating high tide, were simulated with mortality estimated within the intertidal zone for the Mesolithic sites in the region. The results showed that only with the addition of high tide could the sediment deposit site have been inundated by the tsunami. At Howick, mortality estimates varied but were up to 100% within the resource‐rich intertidal zone. The tsunami inundated a large area and would have led to the loss of key resources such as hazelnuts prior to the winter months. These combined effects would have probably been replicated throughout coastal settlements in Northern Britain, possibly leading to the contemporary population decline estimated to have occurred at this time.

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Section: Discussionmentioning

confidence: 99%

Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

Sharrocks,

Hill

2023

J Quaternary Science

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An extreme wave event in Timanfaya National Park: Possible first geological evidence of the 1755 Lisbon tsunami in Lanzarote, Canary Islands

Galindo,

Romero,

Martín‐González

et al. 2024

Earth Surf Processes Landf

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The identification of extreme wave events' deposits is of the main importance in the contexts of global warming and coastal geohazards. Specifically, improving the knowledge of this phenomenon is extremely relevant for high populated volcanic oceanic islands. In this paper, we analyse two extreme wave event deposits located on a coastal platform formed by lavas from the 1730–1736 Timanfaya eruption in Lanzarote Island (Spain). The first one consists of a boulder ridge parallel to the coast of approximately 750 m in length and 7 m asl in elevation. These are accumulations of non‐cemented large boulders and sands that extend about 150 m inland from the intertidal zone. The boulders are of basaltic composition, heterometric, sub‐rounded to angular, and they reach sizes up to 3 m of major axis. They are imbricated both inland and seaward, indicating a strong inundation and backwash. The second deposit is a small outcrop of boulders of equal composition and sizes up to 1 m of major axis, reaching an elevation up to 6 m asl, and has been correlated with the former deposit. Here, the boulders were also deposited on the Timanfaya lavas and later covered by lava flows extruded during the 1824 eruption. Therefore, both deposits could be related with a chronologically well‐contrasted event, between 1736 and 1824. The origin of these deposits could be interpreted as an extreme storm or a tsunami. There are no historical records of extreme storms in the Canary Islands for this period, but there is documentary evidence of the tsunamis of 1761 and 1755. Moreover, for the latter, there is documentation that indicates its impact on coastal infrastructures in the Canary Islands, including the western slope of Lanzarote, and therefore, we propose these deposits as the first sedimentary evidence of the 1755 tsunami in the Canary Islands.

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Storm-induced marine flooding on Morocco’s Atlantic Coast — case of El Jadida Bay

Joudar,

Bouchkara,

Chahid

et al. 2024

Nat Hazards

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Storm surge and tsunami deposits along the Moroccan coasts: state of the art and future perspectives

Cited by 5 publications

References 138 publications

Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

Evaluating the impact of the Storegga tsunami on Mesolithic communities in Northumberland

An extreme wave event in Timanfaya National Park: Possible first geological evidence of the 1755 Lisbon tsunami in Lanzarote, Canary Islands

Storm-induced marine flooding on Morocco’s Atlantic Coast — case of El Jadida Bay

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