Tsunami Hazard Assessment at Oeiras Municipality, Portugal

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...

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Main Authors: Angela Santos, Juan Fernandes, Nelson Mileu
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Journal of Marine Science and Engineering
Subjects:
Online Access:https://www.mdpi.com/2077-1312/10/8/1120
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author Angela Santos
Juan Fernandes
Nelson Mileu
author_facet Angela Santos
Juan Fernandes
Nelson Mileu
author_sort Angela Santos
collection DOAJ
description 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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spelling doaj.art-6a3520babe4f47b38cd24a061e82bb292023-12-03T13:54:29ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-08-01108112010.3390/jmse10081120Tsunami Hazard Assessment at Oeiras Municipality, PortugalAngela Santos0Juan Fernandes1Nelson Mileu2Centre for Geographical Studies and Associated Laboratory TERRA, Institute of Geography and Spatial Planning, Universidade de Lisboa, Rua Branca Edmée Marques, 1600-276 Lisboa, PortugalCentre for Geographical Studies, Institute of Geography and Spatial Planning, Universidade de Lisboa, Rua Branca Edmée Marques, 1600-276 Lisboa, PortugalCentre for Geographical Studies, Institute of Geography and Spatial Planning, Universidade de Lisboa, Rua Branca Edmée Marques, 1600-276 Lisboa, PortugalPortugal 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.https://www.mdpi.com/2077-1312/10/8/11201755 tsunamiOeirasnumerical modelfield surveytsunami hazard
spellingShingle Angela Santos
Juan Fernandes
Nelson Mileu
Tsunami Hazard Assessment at Oeiras Municipality, Portugal
Journal of Marine Science and Engineering
1755 tsunami
Oeiras
numerical model
field survey
tsunami hazard
title Tsunami Hazard Assessment at Oeiras Municipality, Portugal
title_full Tsunami Hazard Assessment at Oeiras Municipality, Portugal
title_fullStr Tsunami Hazard Assessment at Oeiras Municipality, Portugal
title_full_unstemmed Tsunami Hazard Assessment at Oeiras Municipality, Portugal
title_short Tsunami Hazard Assessment at Oeiras Municipality, Portugal
title_sort tsunami hazard assessment at oeiras municipality portugal
topic 1755 tsunami
Oeiras
numerical model
field survey
tsunami hazard
url https://www.mdpi.com/2077-1312/10/8/1120
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AT juanfernandes tsunamihazardassessmentatoeirasmunicipalityportugal
AT nelsonmileu tsunamihazardassessmentatoeirasmunicipalityportugal