Tsunami risk perception along the Tyrrhenian coasts of Southern Italy: the case of Marsili volcano

Gravina, Teresita; Mari, Nicola; Luca, Farina; Pierfrancesco, Calabria

doi:10.1007/s11069-019-03652-x

Cited by 12 publications

(3 citation statements)

References 38 publications

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“…A possible explanation of this difference is in the frequency and time interval of tsunamis that have occurred in the two regions. These results are consistent with a similar study by Gravina et al (2019). However, they also observed a low transfer of information and experiences, from generation to generation.…”

Section: A Gentle Perceived Tsunami Risk In the Western Part Of The M...supporting

confidence: 93%

Tsunami Risk and Alert Perceptions in Five Municipalities bordering the French Mediterranean Basin

Douvinet

Carles

Foulquier

et al. 2023

Preprint

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Abstract. Since the major tsunami that occurred in 2004, many studies have dealt with the evacuations, hazard mapping and awareness-actions, rather than on the perceived tsunami risk nor on alert perceptions declared locally by the population. In this study, we analyzed a sample of 750 answers to a face-to-face questionnaire, gathered from residents or workers in 5 densely-urbanized municipalities (e.g., Bandol, Bastia, Cannes, Six-Fours-Les-Plages, Sanary-sur-Mer), likely to be hit by a tsunami and bordering the French Mediterranean basin. Results first confirmed the tendency to underestimate the tsunami risk, as only 15.6 % identify tsunami as a risk. However, 48.7 % declare they should take protective actions if they feel ground-shaking on the seafront, and even 65.3 % if they also see a anormal sea movement. In contrast, the efficacy of alerting tools and the actors who can alert them are overestimated, as 44.7 % of the respondents think they should be alerted by sirens and 11.7 % by SMS, while such tools are not systematically present and rarely cover tsunami evacuation zones. And only 29.4 % correctly identify the official alert senders: mayors or prefectures. In contrast, 55.7 % declare they go high ground if they receive such instructions in one Alert SMS. The age, gender, residency status or location of the respondents explain a few differences in the collected data. However, relationships between tsunami risk and alert perceptions appear statistically not corelated. All the knowledge produced in this study finally might help the municipalities further develop awareness-actions and information on the tsunami, and inform what strategy they may apply in a short future to better increase the tsunami preparedness.

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Section: A Gentle Perceived Tsunami Risk In the Western Part Of The M...supporting

confidence: 93%

Tsunami Risk and Alert Perceptions in Five Municipalities bordering the French Mediterranean Basin

Douvinet

Carles

Foulquier

et al. 2023

Preprint

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“…Based on these and other geological data, the first probabilistic tsunami hazard assessment (of seismic origin) (S-PTHA) in the NEAM region (North-eastern Atlantic, the Mediterranean and connected seas) has been computed and published . In an S-PTHA approach, the hazard at any specific point on the coast comes from the various tsunami sources affecting that point, including close and distant sources (Selva et al, 2016;Grezio et al, 2017;Davies et al, 2017;Volpe et al, 2019). For Italy, it is evident that the most hazardous areas are those exposed to both local and distant earthquakes.…”

Section: Relevance Of Tsunami Risk On the Mediterranean And Italian Cmentioning

confidence: 99%

Tsunami risk perception in southern Italy: first evidence from a sample survey

Cerase

Crescimbene

Longa

et al. 2019

Nat. Hazards Earth Syst. Sci.

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Abstract. The Italian Tsunami Alert Centre of the Istituto Nazionale di Geofisica e Vulcanologia (Centro di Allerta Tsunami, hereinafter CAT-INGV) supported a computer-assisted telephone interview (CATI) survey to investigate tsunami risk perception in two pilot regions of southern Italy. The survey was carried out on a stratified sample of 1021 interviewees representing about 3.2 million people living in 183 coastal municipalities of the two regions, namely Calabria and Apulia. The main goal of this research is to verify whether and how people's perception of tsunami hazard compares to the results of (PTHA) – probabilistic tsunami hazard assessment (TSUMAPS-NEAM project; Basili et al., 2018). As shown by the results of this project, both investigated regions are characterised by high tsunami hazard. Nonetheless, the long return time of such events could lead people to consider the occurrence of a tsunami in the Mediterranean Sea to be very unlikely. The survey results reveal that people's risk perception is low: for almost half of the whole sample the occurrence of a tsunami in the Mediterranean Sea is considered quite unlikely, with a clear difference between Apulia and Calabria. In the latter region the risk perception is much higher than in the former, probably due to the shorter time elapsed since the last event. Also, belonging to different coastal areas1 appears to have a significant influence on the way tsunami hazard is conceived, having a stronger effect on risk characterisation: the interviewees of Tyrrhenian Calabria are indeed more likely to associate tsunami risk with volcanoes than the Ionian citizens. This is coherent considering the presence of active volcanoes and related tsunami precedents in the Tyrrhenian. Television emerged as the most relevant source of knowledge for almost 90 % of the sample, and the influence of media also results in the way tsunami risk is characterised. In particular, the survey showed that people's perception and understanding of tsunamis are affected by media accounts of large events, such as the 2004 Sumatra and the 2011 Japan tsunamis. At the same time, it is evident that the risk posed by smaller events is underrated. Furthermore, the survey's results show that the word “tsunami” occupies a different semantic space in comparison to the Italian traditional headword maremoto, with differences among sample strata. In other words, the same physical phenomenon would be understood in two different ways by younger, educated people and elders with a low education level. The results of this study, although limited to two regions, provide a first assessment of tsunami risk perception in Italy, also entailing important consequences for both risk communication practice and mitigation policies.

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“…Comment No. 2: At Page 2, Para 2: The surname of the author is Gravina, so the citation is Gravina et al, 2019 Reply No. 2: Thank you for your correction.…”

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confidence: 99%

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Syamsidik¹

2019

Preprint

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Tsunami risk perception along the Tyrrhenian coasts of Southern Italy: the case of Marsili volcano

Cited by 12 publications

References 38 publications

Tsunami Risk and Alert Perceptions in Five Municipalities bordering the French Mediterranean Basin

Tsunami Risk and Alert Perceptions in Five Municipalities bordering the French Mediterranean Basin

Tsunami risk perception in southern Italy: first evidence from a sample survey

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