A probabilistic approach for determining submarine landslide tsunami hazard along the upper east coast of the United States

Grilli, Stéphan T.; Taylor, Oliver Denzil S.; Baxter, Christopher; Maretzki, S.

doi:10.1016/j.margeo.2009.02.010

Cited by 89 publications

(70 citation statements)

References 33 publications

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“…Here, run-up estimation is found by setting H 1 = 1m as the last wet point, in order to avoid singularity in Equation (17). The use of the Green's law close to the coasts is a common approach for rapid estimation of the maximum tsunami wave height for both probabilistic hazard ( [11]) and warning purposes ( [57]) and its good agreement with computational results has been demonstrated by [57].…”

Section: Source Interactions In Long-and Short-term Totpthamentioning

confidence: 96%

“…However, it has been demonstrated that in many areas, major causes of tsunami are the non-seismic sources, such as mass failures (whether or not triggered by seismic events) ( [17,18]), volcanic activity ( [19][20][21][22][23][24][25]). In particular, volcanic flows ( [26,27]), landslides and rock slides on coastal areas ( [28][29][30][31][32]) and submarine mass failures ( [33][34][35][36]) may lead to the catastrophic tsunamis, but very few analyses treated such non-seismic tsunamigenic sources in a probabilistic frame ( [13,37]).…”

Section: Introductionmentioning

confidence: 99%

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A Methodology for a Comprehensive Probabilistic Tsunami Hazard Assessment: Multiple Sources and Short-Term Interactions

Grezio

Tonini

Sandri

et al. 2015

JMSE

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Abstract:We propose a methodological approach for a comprehensive and total probabilistic tsunami hazard assessment (T otP T HA), in which many different possible source types concur to the definition of the total tsunami hazard at given target sites. In a multi-hazard and multi-risk perspective, the approach allows us to consider all possible tsunamigenic sources (seismic events, slides, volcanic eruptions, asteroids, etc.). In this respect, we also formally introduce and discuss the treatment of interaction/cascade effects in the T otP T HA analysis and we demonstrate how the triggering events may induce significant temporary variations in short-term analysis of the tsunami hazard. In two target sites (the city of N aples and the island of Ischia in Italy) we prove the feasibility of the T otP T HA methodology in the multi−source case considering near submarine seismic sources and submarine mass failures in the study area. The T otP T HA indicated that the tsunami hazard increases significantly by considering both the potential submarine mass failures and the submarine seismic events. Finally, the importance of the source interactions J. Mar. Sci. Eng. 2015, 3 24 is evaluated by applying a triggering seismic event that causes relevant changes in the short-term T otP T HA.

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Section: Source Interactions In Long-and Short-term Totpthamentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

A Methodology for a Comprehensive Probabilistic Tsunami Hazard Assessment: Multiple Sources and Short-Term Interactions

Grezio

Tonini

Sandri

et al. 2015

JMSE

View full text Add to dashboard Cite

show abstract

“…The main drawback of this method is that it relies upon the occurrence probability distribution function of the tsunamigenic sources, which cannot always be estimated reliably, especially if submarine mass failures are involved. Therefore, it is often restricted to application where only tsunamis of seismic origin are taken into account, with only rare exceptions (see Grilli et al, 2009). The scenario-based approach stands on the idea that in many applications concerning tsunami mitigation, what matters most is not the knowledge of the effects of a full spectrum of tsunami events with associated probability of occurrence, but only the knowledge of the features of the extreme events.…”

Section: The 1303 Tsunamimentioning

confidence: 99%

Scenario-based assessment of buildings' damage and population exposure due to earthquake-induced tsunamis for the town of Alexandria, Egypt

Pagnoni

Armigliato

Tinti

2015

Nat. Hazards Earth Syst. Sci.

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Abstract. Alexandria is the second biggest city in Egypt with regards to population, is a key economic area in northern Africa and has very important tourist activity. Historical records indicate that it was severely affected by a number of tsunami events. In this work we assess the tsunami hazard by running numerical simulations of tsunami impact in Alexandria through the worst-case credible tsunami scenario analysis (WCTSA). We identify three main seismic sources: the western Hellenic Arc (WHA -reference event AD 365, M w = 8.5), the eastern Hellenic Arc (EHA -reference event 1303, M w = 8.0) and the Cyprus Arc (CA -hypothetical scenario earthquake with M w = 8.0), inferred from the tectonic setting and from historical tsunami catalogues. All numerical simulations are carried out in two sea level conditions (mean sea level and maximum high-tide sea level) by means of the code UBO-TSUFD, developed and maintained by the Tsunami Research Team of the University of Bologna. Relevant tsunami metrics are computed for each scenario and then used to build aggregated fields such as the maximum flood depth and the maximum inundation area. We find that the case that produces the most relevant flooding in Alexandria is the EHA scenario, with wave heights up to 4 m. The aggregate fields are used for a building vulnerability assessment according to a methodology developed in the framework of the EU-FP6 project SCHEMA and further refined in this study, based on the adoption of a suitable building damage matrix and on water inundation depth. It is found that in the districts of El Dekhila and Al Amriyah, to the southwest of the port of Dekhila, over 12 000 (13 400 in the case of maximum high tide) buildings could be affected and hundreds of them could sustain damaging consequences, ranging from critical damage to total collapse. It is also found that in the same districts tsunami inundation covers an area of about 15 km 2 , resulting in more than 150 000 (165 000 in the case of maximum high tide) residents being exposed.

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“…These data showed a tsunami signal during the across the Indian Ocean [24]. The number of publications based on earthquake monitoring increases significantly and becomes a topic of increasing interest in the last decade [25,26].…”

Section: Introductionmentioning

confidence: 96%

Applied Engineering Using Schumann Resonance for Earthquakes Monitoring

et al. 2017

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For populations that may be affected, the risks of earthquakes and tsunamis are a major concern worldwide. Therefore, early detection of an event of this type in good time is of the highest priority. The observatories that are capable of detecting Extremely Low Frequency (ELF) waves (<300 Hz) today represent a breakthrough in the early detection and study of such phenomena. In this work, all earthquakes with tsunami associated in history and all existing ELF wave observatories currently located worldwide are represented. It was also noticed how the southern hemisphere lacks coverage in this matter. In this work, the most suitable locations are proposed to cover these geographical areas. Also, ELF data processed obtained from the observatory of the University of Almeria in Calar Alto, Spain are shown. This is a contribution to help protect against natural disasters such as those caused by earthquakes and tsunamis.

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A probabilistic approach for determining submarine landslide tsunami hazard along the upper east coast of the United States

Cited by 89 publications

References 33 publications

A Methodology for a Comprehensive Probabilistic Tsunami Hazard Assessment: Multiple Sources and Short-Term Interactions

A Methodology for a Comprehensive Probabilistic Tsunami Hazard Assessment: Multiple Sources and Short-Term Interactions

Scenario-based assessment of buildings' damage and population exposure due to earthquake-induced tsunamis for the town of Alexandria, Egypt

Applied Engineering Using Schumann Resonance for Earthquakes Monitoring

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