Probabilistic Tsunami Hazard Analysis for Ports and Harbors

Thio, Hong Kie; Somerville, Paul; Polet, J.; Ichinose, Gene A.

doi:10.1061/40834(238)103

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…Probabilistic Tsunami Hazard Analysis (PTHA), as detailed by Thio et al (2005) amongst others, can be considered a conceptually standard approach to assessing tsunami hazard, as discussed by Geoscience Australia in the Tsunami Hazard Modelling Guidelines (2018). Typically, hazard curves of a hydrodynamic parameter such as surge level are produced at an offshore location.…”

Section: Contextmentioning

confidence: 99%

Inshore Tsunami Hazard Including Bathymetric and Epistemic Uncertainty – A Design Methodology

Couper,

Waterhouse

2023

Int. Conf. Coastal. Eng.

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Probabilistic Tsunami Hazard Analysis (PTHA), as detailed by Thio et al (2005) amongst others, can be considered a conceptually standard approach to assessing tsunami hazard, as discussed by Geoscience Australia in the Tsunami Hazard Modelling Guidelines (2018). Typically, hazard curves of a hydrodynamic parameter such as surge level are produced at an offshore location. This study presents a methodology which facilitates the production of inshore hazard curves which retain and account for complex hydrodynamic interactions, in addition to allowing uncertainty in bathymetry and model capture of seiching in local embayments. The methodologies are demonstrated through a case study of American Samoa, for which detailed bathymetry is available in the public domain, and high-resolution tsunami observations have been previously captured.

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Section: Contextmentioning

confidence: 99%

Inshore Tsunami Hazard Including Bathymetric and Epistemic Uncertainty – A Design Methodology

Couper,

Waterhouse

2023

Int. Conf. Coastal. Eng.

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“…PTHA is broken into multiple components, the first of which assesses the hazard for offshore tsunami height. The second component uses these tsunami waveforms and empirical data, when available, to obtain probabilistic tsunami run-up and inundation hazards (Thio et al 2006;Geist & Parsons 2006).…”

Section: Probabilistic Tsunami Hazard Analysis (Ptha)mentioning

confidence: 99%

ASM Sci. J., Vol. 2, No. 2, 2008

Liki

2008

ASMScJ

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In this fourth issue and second volume of the Journal, an attempt is made to introduce the thematic issue of photonics. Theterm describes the ‘combination of light technologies and electronics in telecommunication’ which now can be defined ‘asthe field in science, medicine and technology investigating and using laser light’.ASM Science Journal is mainly a multi-disciplinary one but periodically, adhering to the aims and objectives, a collectionof articles devoted to a single subject area is deemed fit to be published. This is to address current impending issues andthe demands cum needs of the scientific community and society pertaining to a specific area of a scientific discipline. Thenext thematic issue will be on Antarctic research.The Editorial Board is grateful to the guest editor, Prof Harith Ahmad of University of Malaya and his committee comprisingexperts in the area of photonics who selected, reviewed and approved nine research articles (pp. 107–168), covering amyriad of topics on tuning range characteristics, multiwavelength fiber laser, design of variable gain-flattened EDFA,wideband double-pass Raman fiber amplifier, chromatic dispersion measurement technique, the effect of fiber length onSNR in laser linewidth measurement, fabrication tolerance, loss analysis, grating waveguide, polarisation splitter, resonanttunnelling, Er-Yb co-doped phosphate DFB laser, optical code generating device and erbium/ytterbium co-doped fiberamplifier, etc.To complement the R&D articles on photonics, a topic on science forum (pp. 169–182) which describes laser research atthe University of Technology Malaysia, addressing the broad field of spectrum from laser materials, electronic devicesand laser application was also included.

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“…Probabilistic tsunami hazard analysis applies to different geographic scales. These scales include global-scale PTHA (Davies et al, 2018), regional-scale PTHA (Thio et al, 2007;Sorensen et al, 2012;Power et al, 2013;Lorito et al, 2015;Omira et al, 2015;Li et al, 2016;Zamora and Babeyko, 2020;Basili et al, 2021), national-scale PTHA (Grezio et al, 2012;Suppasri et al, 2012;Horspool et al, 2014;De Risi and Goda, 2016;El-Hussain et al, 2016;Davies and Griffin, 2019;Kotani et al, 2020), and local-scale PTHA (González et al, 2009;Omira et al, 2016;Volpe et al, 2019). Detailed PTHA of a specific coastal segment community (local-scale) often involves highresolution inundation modeling and treatment of uncertainties from local effects, such as the tidal stage (Omira et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Tsunami Hazard Assessment in Meso and Macro Tidal Areas. Application to the Cádiz Bay, Spain

et al. 2021

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Tsunami hazard can be analyzed from both deterministic and probabilistic points of view. The deterministic approach is based on a “credible” worst case tsunami, which is often selected from historical events in the region of study. Within the probabilistic approach (PTHA, Probabilistic Tsunami Hazard Analysis), statistical analysis can be carried out in particular regions where historical records of tsunami heights and runup are available. In areas where these historical records are scarce, synthetic series of events are usually generated using Monte Carlo approaches. Commonly, the sea level variation and the currents forced by the tidal motion are either disregarded or considered and treated as aleatory uncertainties in the numerical models. However, in zones with a macro and meso tidal regime, the effect of the tides on the probability distribution of tsunami hazard can be highly important. In this work, we present a PTHA methodology based on the generation of synthetic seismic catalogs and the incorporation of the sea level variation into a Monte Carlo simulation. We applied this methodology to the Bay of Cádiz area in Spain, a zone that was greatly damaged by the 1755 earthquake and tsunami. We build a database of tsunami numerical simulations for different variables: faults, earthquake magnitudes, epicenter locations and sea levels. From this database we generate a set of scenarios from the synthetic seismic catalogs and tidal conditions based on the probabilistic distribution of the involved variables. These scenarios cover the entire range of possible tsunami events in the synthetic catalog (earthquakes and sea levels). Each tsunami scenario is propagated using the tsunami numerical model C3, from the source region to the target coast (Cádiz Bay). Finally, we map the maximum values for a given probability of the selected variables (tsunami intensity measures) producing a set of thematic hazard maps. 1000 different time series of combined tsunamigenic earthquakes and tidal levels were synthetically generated using the Monte Carlo technique. Each time series had a 10000-year duration. The tsunami characteristics were statistically analyzed to derive different thematic maps for the return periods of 500, 1000, 5000, and 10000 years, including the maximum wave elevation, the maximum current speed, the maximum Froude number, and the maximum total forces.

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Probabilistic Tsunami Hazard Analysis for Ports and Harbors

Cited by 5 publications

References 11 publications

Inshore Tsunami Hazard Including Bathymetric and Epistemic Uncertainty – A Design Methodology

Inshore Tsunami Hazard Including Bathymetric and Epistemic Uncertainty – A Design Methodology

ASM Sci. J., Vol. 2, No. 2, 2008

Probabilistic Tsunami Hazard Assessment in Meso and Macro Tidal Areas. Application to the Cádiz Bay, Spain

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