Observed and Modeled Currents from the Tohoku-oki, Japan and other Recent Tsunamis in Northern California

Admire, A. R.; Dengler, Lori; Crawford, Greg; Uslu, Burak; Borrero, José C.; Greer, S. Dougal; Wilson, R. I.

doi:10.1007/s00024-014-0797-8

Cited by 40 publications

(26 citation statements)

References 27 publications

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“…On the other hand, the commonly used numerical scheme in tsunami modeling with shallow water approximation (e.g., Titov and González 1997;Imamura 1996) has an efficient computational time with relatively good accuracy. However, they should be equipped with high-resolution bathymetry and topographic data with an accuracy of at least 10 m if one would like to use them for detailed modeling of tsunami hazard in ports (Uslu et al 2013;Lynett et al 2012Lynett et al , 2014Admire et al 2014). By referring to the above-mentioned conditions, this study chooses to use the world standard tsunami model (IOC-UNESCO 1997), which utilizes the shallow water approximation and nested grid system as a basis for detailed simulations including the advance friction factor to accommodate tsunami inundation in built environment (Imamura 2009).…”

Section: Tsunami Simulationmentioning

confidence: 99%

“…The latter has led to a poor understanding of the mechanisms of tsunami-induced current hazards (lynett et al 2012, 2014). To address this problem, numerical simulations with specific conditions have been recommended as a potential solution (e.g., Admire et al 2014;Lynett et al 2014). By using a high-approximation numerical scheme and/or high-resolution bathymetry data, a reliable tsunami simulation around the port can be obtained.…”

Section: Introductionmentioning

confidence: 99%

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Assessment of tsunami hazards in ports and their impact on marine vessels derived from tsunami models and the observed damage data

Muhari

Charvet

Futami³

et al. 2015

Nat Hazards

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This paper presents a detailed study of tsunami hazard in ports and its correlation with the damage suffered by marine vessels. The study aims to develop a new loss function to estimate the potential damage of marine vessels due to tsunami attack based on a novel multivariate statistical modeling method, which used several explanatory variables simultaneously to estimate an outcome or the probability of such outcome. In the first part of the paper, tsunami heights and velocities are numerically modeled by using highresolution bathymetry and topography data for the southern part of Honshu Island. We apply statistical methods to the complete sequence of spatially distributed time series of tsunami parameters in order to obtain the best fit with the observed damage data. In the second part, we develop loss functions for marine vessels by using ordinal regression, which uses simultaneously several explanatory variables. We perform several statistical tests to determine the appropriate model variables to be used in developing three-dimensional loss estimation surfaces, which provide probability of loss for each combination of measured or simulated values of tsunami parameters. The main feature of the developed loss functions presented in this study is their capability to integrate the key factors influencing the damage probability, such as tsunami parameters, characteristics of marine vessels and the impact of collision experienced by the vessels during the tsunami. Such a robust method, therefore, is crucially important to understand the tsunami impact on ports and, particularly on marine vessels.

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Section: Tsunami Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Assessment of tsunami hazards in ports and their impact on marine vessels derived from tsunami models and the observed damage data

Muhari

Charvet

Futami³

et al. 2015

Nat Hazards

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“…They also show that a model neglecting dispersion effects could underestimate wave heights and current speeds of the trailing waves developing in coastal waters. This is followed by ADMIRE et al (2014), who present some relatively rare tsunami current speed data from northern California, including instrumental data from the 2010 Chile and 2011 Tohoku tsunamis in Humboldt Bay and current speeds derived from video camera footage at the entrance to Crescent City Harbor during the 2011 Tohoku tsunami. During the 2011 event, the tsunami signal was evident for more than 40 h in Humboldt Bay, with a peak current speed of 0.8 m/s occurring approximately 1 h after arrival.…”

Section: The 2011 Tohoku Tsunamimentioning

confidence: 99%

“…In the far field, ZHOU et al (2014) andADMIRE et al (2014) investigate both tsunami wave heights and currents. Firstly, ZHOU et al (2014), examine the effects of frequency dispersion on tsunami waves and currents from the 2011 Tohoku event.…”

Section: The 2011 Tohoku Tsunamimentioning

confidence: 99%

Introduction to “Tsunamis in the Pacific Ocean: 2011–2012”

Rabinovich

Borrero

Fritz

2014

Pure Appl. Geophys.

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Abstract-With this volume of the Pure and Applied Geophysics (PAGEOPH) topical issue ''Tsunamis in the Pacific Ocean: 2011-2012'', we are pleased to present 21 new papers discussing tsunami events occurring in this two-year span. Owing to the profound impact resulting from the unique crossover of a natural and nuclear disaster, research into the 11 March 2011 Tohoku, Japan earthquake and tsunami continues; here we present 12 papers related to this event. Three papers report on detailed field survey results and updated analyses of the wave dynamics based on these surveys. Two papers explore the effects of the Tohoku tsunami on the coast of Russia. Three papers discuss the tsunami source mechanism, and four papers deal with tsunami hydrodynamics in the far field or over the wider Pacific basin. In addition, a series of five papers presents studies of four new tsunami and earthquake events occurring over this time period. This includes tsunamis in El Salvador, the Philippines, Japan and the west coast of British Columbia, Canada. Finally, we present four new papers on tsunami science, including discussions on tsunami event duration, tsunami wave amplitude, tsunami energy and tsunami recurrence.

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“…The Tohoku 2011 source used in this article was also selected due to a really good fit to DART ® buoy data from the Pacific Ocean [26]. More recently it was also shown to compare fairly well against tsunami currents measured by recently installed acoustic Doppler current profilers (ADCP; [27]). …”

Section: Numerical Modelingmentioning

confidence: 99%

Time Evolution of Man-Made Harbor Modifications in San Diego: Effects on Tsunamis

Barberopoulou

Legg

Gica

2015

JMSE

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San Diego, one of the largest ports on the U.S. West Coast and home to the largest U.S. Navy base, is exposed to various local and distant tsunami sources. During the first half of the twentieth century, extensive modifications to the port included but were not limited to dredging, expansion of land near the airport and previous tidal flats, as well as creation of jetties. Using historical nautical charts and available Digital Elevation Models, this study gives an overview of changes to San Diego harbor in the last 150+ years due to human intervention and examines the effects of these changes on tsunamis. Two distant and two local scenarios were selected to demonstrate the impact of modified nearshore topography and bathymetry to incoming tsunamis. Inundation pattern, flow depths, and flooded localities vary greatly from year to year in the four scenarios. Specifically, flooded OPEN ACCESS J. Mar. Sci. Eng. 2015, 3 1383 areas shift from the inner harbor to outer locations. Currents induced by the distant tsunamis intensify with modifications and shift from locations primarily outside the harbor to locations inside. A new characteristic in tsunami dynamics associated with port modifications is the introduction of high current spots. Numerical results also show that the introduction of high currents could threaten navigation, vessels, and facilities at narrow openings and also along the harbor "throat"-therefore, at an increased number of locations. Modifications in the port show that changes could have a negative but also a positive impact through constraint of flooding outside of the harbor and shifting of high currents to locations of minimal impact. The results of this study may be used as a first step toward future harbor design plans to reduce tsunami damages.

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Observed and Modeled Currents from the Tohoku-oki, Japan and other Recent Tsunamis in Northern California

Cited by 40 publications

References 27 publications

Assessment of tsunami hazards in ports and their impact on marine vessels derived from tsunami models and the observed damage data

Assessment of tsunami hazards in ports and their impact on marine vessels derived from tsunami models and the observed damage data

Introduction to “Tsunamis in the Pacific Ocean: 2011–2012”

Time Evolution of Man-Made Harbor Modifications in San Diego: Effects on Tsunamis

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