Tsunami Deposits in Atlantic Iberia: A Succinct Review

Costa, Pedro; Lario, Javier; Reicherter, Klaus

doi:10.1007/978-981-19-1979-4_5

Cited by 5 publications

(3 citation statements)

References 89 publications

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“…Taking into account the uncertainties of 14 C dating, it is possible to correlate between the 2700 and 3800 cal BP events in the Tahaddart estuary, respectively with the deposits A and C of Rodríguez-Ramírez et al (2015). Other works on the Iberian Atlantic coasts agree on the existence of a submergence event between 3000 and 2500 cal BP, whose sedimentary traces are present in Guardiana, Rio Piedras, Tinto-Odiel and Guadalquivir (see the review of Costa et al 2022). Marine submersion deposit similar in term of age to the 625 cal BP deposit was recognized by Morales et al (2008) in the Tinto-Odeil estuary, in the form of a marine shell-rich tsunamigenic level (HEL2).…”

Section: Chronological Correlation Of Identified Events With Regional...mentioning

confidence: 85%

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

et al. 2023

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The Moroccan coast is occasionally confronted with marine submersion events caused by storm surges and tsunamis. The Moroccan historical archives recorded some of these events, such as the storm surge of 2014 CE and the tsunami of 1755 CE. The latter remains the most destructive event the country has ever faced, with major human and economic losses recorded mainly between the two cities of Tangier and Safi. The privileged way to prevent any hazard related to these events is to study their past occurrences and consequences. However, historical records are often very scarce to determine their return periods and evaluate their intensities.Accordingly, the scientific community increasingly uses sedimentary archives from coastal environments, since they offer a viable alternative to historical archives. Several studies using this approach have been conducted on the Moroccan coast in recent years; however, until now, there has been no review dealing with these studies, which is the main objective of this paper.The present review shows that most of the Moroccan sites containing marine submersion deposits are located along the Atlantic coast. The Mediterranean coast remain poorly studied despite the presence of tsunami and storm surge risks. The review draws attention also to the absence of chronological data for most of the marine submersion deposits recognized up to now 2 along the Moroccan coasts, which is a major issue that prevents the determination of the return period of these events.

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Section: Chronological Correlation Of Identified Events With Regional...mentioning

confidence: 85%

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

et al. 2023

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“…This set of evidence reveals that one or several high-energy marine events struck the seaboard of the Gulf of Cadiz in the middle of the first millennium BC. The geographic scope of the geomorphological and sedimentary effects of these events allows to suggest a tsunami as the cause, at least in some cases (Lario et al 2010 ;Lario et al 2011 ;Costa et al 2022). However, the fact that the radiocarbon dates of the samples establishing these deposits fall within the Hallstatt plateau, the period from 800/750 cal BC to 400 cal BC in which the 14 C calibration curve is practically flat (García Alfonso 2017 ; Calvo Trias et al 2020), indicates that these dates offer only a rough estimate.…”

Section: High-energy Marine Events In the Gulf Of Cadiz In The Middle...mentioning

confidence: 99%

Battles beneath the Sea: Phoenician Votive Offerings as a Possible Religious Response to Extreme Marine Events in the Gulf of Cadiz

Álvarez-Martí-Aguilar

2023

Journal of Eastern Mediterranean Archaeology and Heritage Studies

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This article reviews the possible cause for the underwater deposition of a series of Phoenician bronze figurines dated between the eighth and seventh centuries BC and discovered on the southwestern coast of the Iberian Peninsula, around the Islet of Sancti Petri (Cadiz) and on the coast near the city of Huelva. These figurines have been interpreted as votive offerings thrown into the waters near the ports of Cadiz and Huelva by Phoenician seafarers and merchants at the end of their voyages as an expression of gratitude to the god Melqart. Instead, I propose that these objects may have been thrown into the waters as part of religious rituals intended to appease the waters of the ocean following the occurrence of catastrophic marine floods, such as those that apparently affected the seaboard of the Gulf of Cadiz in the middle of the first millennium BC.

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“…The location of the tsunami source area of the 1755 earthquake and tsunami has been the focus of many publications. Different authors using several methodologies, over different periods of time, carried out the identification of sediment records and turbidites [6][7][8][9][10][11], seismo-tectonics [12][13][14][15][16][17][18][19][20][21][22][23], seismic moment assessment [24], seismic intensity analysis and modeling [25][26][27], tsunami wave ray analysis and tsunami numerical model applied at the regional scale (propagation) [28], and tsunami numerical model applied at the local scale (inundation) combined with field survey [3,29]. All these publications indicate the earthquake's magnitude would be M w = 8.7, with the earthquake and tsunami source area located on the Gorringe Bank (Figure 1a).…”

Section: Introductionmentioning

confidence: 99%

Tsunami Hazard Assessment at Oeiras Municipality, Portugal

Santos

Fernandes

Mileu

2022

JMSE

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Portugal has had several large tsunamis in the past, yet Oeiras municipality has not implemented mitigation strategies and awareness to the general public, to the authors’ knowledge. In addition, Oeiras has 10 beaches that are very popular among residents and tourists, who can become at high risk of a potential tsunami if they do not evacuate from the low ground areas on time. Thus, the tsunami numerical model of the 1755 event was carried out to calculate the inundation, complemented with a field survey, in order to assess the tsunami evacuation conditions of the beaches. The results show the tsunami hits Oeiras municipality 26 to 36 min after the earthquake, inundating all the beaches. The local tsunami hazard classification is Low on 3 beaches, Moderate on 1 beach, High on 5 beaches, and Critical on 1 beach. In addition, there are no tsunami evacuation signs to guide the people to move to higher ground. Therefore, it is important to conduct mitigation strategies to avoid and reduce fatalities in a future tsunami.

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Tsunami Deposits in Atlantic Iberia: A Succinct Review

Cited by 5 publications

References 89 publications

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

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

Battles beneath the Sea: Phoenician Votive Offerings as a Possible Religious Response to Extreme Marine Events in the Gulf of Cadiz

Tsunami Hazard Assessment at Oeiras Municipality, Portugal

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