A5078723272- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Coastal and Marine Dynamics
- Earthquake and Tsunami Effects
- Climate variability and models
- Oceanographic and Atmospheric Processes
- earthquake and tectonic studies
- Meteorological Phenomena and Simulations
- Flood Risk Assessment and Management
- Earthquake and Disaster Impact Studies
- Coastal wetland ecosystem dynamics
- Fluid Dynamics Simulations and Interactions
- Aeolian processes and effects
- Methane Hydrates and Related Phenomena
- Geophysics and Gravity Measurements
- Coastal and Marine Management
- Arctic and Antarctic ice dynamics
- Seismology and Earthquake Studies
- Wave and Wind Energy Systems
- Underwater Acoustics Research
- Oil Spill Detection and Mitigation
- Disaster Management and Resilience
- Fluid Dynamics and Mixing
- Seismic Performance and Analysis
- Earthquake Detection and Analysis
Kyoto University
2016-2025
Swansea University
2021-2025
Yokohama National University
2010-2025
Prevention Institute
2011-2024
Kyoto University of Education
2022-2024
Kyoto Bunkyo University
2018-2024
National Research Institute for Earth Science and Disaster Resilience
2022
East China University of Science and Technology
2022
Shanghai Normal University
2022
ShanghaiTech University
2022
[1] At 14:46 local time on March 11, 2011, a magnitude 9.0 earthquake occurred off the coast of northeast Japan. This generated tsunami that struck Japan as well various locations around Pacific Ocean. With participation researchers from throughout Japan, joint research groups conducted survey along 2000 km stretch Japanese coast. More than 5300 have been surveyed to date, generating largest dataset in world. On Sendai Plain, maximum inundation height was 19.5 m, and bore propagated more 5...
AbstractAt 14:46 local time on March 11, 2011, a magnitude 9.0 earthquake occurred off the coast of northeast Japan. This generated tsunami that struck Japan as well various locations around Pacific Ocean. With participation about 300 researchers from throughout Japan, joint research groups conducted survey along 2,000 km stretch Japanese coast. More than 5,200 have been surveyed to date, generating largest dataset in world. The inundation height and run-up were by laser, GPS, other...
Abstract An unprecedentedly large ensemble of climate simulations with a 60-km atmospheric general circulation model and dynamical downscaling 20-km regional has been performed to obtain probabilistic future projections low-frequency local-scale events. The the latter half twentieth century, 4 K warmer than preindustrial climate, century without historical trends associated anthropogenic effect are each simulated for more 5,000 years. From simulations, changes in extreme events available...
Abstract Typhoon Haiyan, which struck the Philippines in November 2013, was an extremely intense tropical cyclone that had a catastrophic impact. The minimum central pressure of Haiyan 895 hPa, making it strongest typhoon to make landfall on major island western North Pacific Ocean. characteristics and its related storm surge are estimated by numerical experiments using weather prediction models model. Based analysis best hindcast results, level 5–6 m local amplification water surface...
Abstract Based on a weakly non-Gaussian theory, the occurrence probability of freak waves is formulated in terms number time series and surface elevation kurtosis. Finite kurtosis gives rise to significant enhancement wave generation comparison with linear narrowbanded theory. For fixed waves, estimated amplification ratio due deviation from Gaussian theory 50%–300%. The results are compared laboratory field data.
The influence of global climate change due to greenhouse effects on the earth's environment will require impact assessment, mitigation and adaptation strategies for future our society. This study predicts ocean wave in comparison with present based atmospheric general circulation model model. annual averaged extreme sea surface winds waves are analyzed detail. There clear regional dependences both average also height changes from climates. heights increase at middle latitudes Antarctic...
Acoustic Doppler velocimeter (ADV) measurements are useful and powerful for of mean turbulent components fluids in both hydraulic experimental facilities fields. However, it is difficult to use the ADV bubbly flows because air bubbles generate spike noise velocity data. This study describes validity flows. The true three-dimensional phase space method originally developed by Goring Nikora 2002 significantly eliminate recorded data flow comparison with classical low correlation method.
We discuss two independent, large scale experiments performed in wave basins of different dimensions which the statistics surface elevation are addressed. Both facilities equipped with a maker capable generating waves prescribed frequency and directional properties. The experimental results show that probability formation amplitude strongly depends on properties waves. Sea states characterized by long-crested steep more likely to be populated freak respect those spreading.
Abstract Based on Monte Carlo simulations of the nonlinear Schrödinger equation in two horizontal dimensions, dependence kurtosis directional energy distribution initial conditions is examined. The parametric survey carried out to obtain behavior as function Benjamin–Feir index and spread sea states. As dispersion effect becomes significant, monotonically decreases comparison with unidirectional waves. A parameterization estimated from spectra proposed here; error at most 10%. verified...
In this study, we develop stochastic random-field slip models for the 2011 Tohoku earthquake and conduct a rigorous sensitivity analysis of tsunami hazards with respect to uncertainty fault geometry. Synthetic distributions generated from modified Mai-Beroza method captured key features inversion-based source representations mega-thrust event, which were calibrated against rich geophysical observations event. Using original synthesised (varied strike, dip, distributions), simulations carried...
New scaling relationships of key earthquake source parameters are developed by uniformly and systematically analyzing 226 finite-fault rupture models from the SRCMOD database (http://equake-rc.info/srcmod/). The include fault width, length, area, mean slip, maximum Box-Cox power, correlation lengths along dip strike directions, Hurst number. distinguishing tsunamigenic non-tsunamigenic models; typically, former occurs in ocean has gentler angles than latter. new based on extensive data,...
Tropical cyclones generate severe hazards in the middle latitudes. A brief review and applications of dynamical statistical downscaling tropical cyclone (TC) are described targeting extreme storm surge wave hazard assessment. First, a current understanding changes characteristics TCs past future is shown. Then, ongoing research about impact assessment both model for Typhoon Vera 1959 Haiyan 2013. Finally, several examples presented. Changes TC intensity track linked to climate latitude.
Effects of climate change on the worst case scenario a storm surge induced by super typhoon in present are investigated through study Typhoon Haiyan. We results our investigation super-typhoon Haiyan using high resolution (1 km grid) regional model that explicitly handles cloud microphysical processes. As parent model, we adopted operational weekly ensemble experiments (60 Japan Meteorological Agency, and compared sea surface temperatures atmospheric environmental parameters from before...
Abstract This dataset, produced through the Coordinated Ocean Wave Climate Project (COWCLIP) phase 2, represents first coordinated multivariate ensemble of 21 st Century global wind-wave climate projections available (henceforth COWCLIP2.0). COWCLIP2.0 comprises general and extreme statistics significant wave height ( H S ), mean period T m direction θ ) computed over time-slices 1979–2004 2081–2100, at different frequency resolutions (monthly, seasonally annually). The full comprising 155...
This study examines long-term ensemble projections for historical and future climate conditions over 5,000 years using an atmospheric global circulation model. The condition is assumed as a constant +4K in the mean temperature from before Industrial Revolution (c.a. 1850), perturbed by observed sea surface (SST) error. A set of experiments assesses impact low probability phenomena, such tropical cyclones storm surge comparison with conventional time-slice experiments. Future changes will be...
Abstract A large-ensemble climate simulation database, which is known as the database for policy decision-making future changes (d4PDF), was designed change risk assessments. Since completion of first set simulations in 2015, has been growing continuously. It contains results ensemble conducted over a total thousands years respectively past and climates using high-resolution global (60 km horizontal mesh) regional (20 atmospheric models. Several sets are available, mean surface air...
Multiple cascading hazards triggered by the 2018 Sulawesi, Indonesia, earthquake caused various compounding consequences. A major strike-slip fault movement with along-dip components resulted in intense ground shaking, liquefaction and lateral spreading, large-scale mudflows, tsunamis. This paper presents observations of such multi-hazard effects on buildings infrastructure areas along Palu Bay, based field reconnaissance work, discusses main causes disaster focusing upon combined geological...
Climate change due to global warming is expected have major impacts on phenomena such as tropical cyclones (TCs), Baiu, precipitation, and seasonal storms. Many natural disasters in East Asia are driven by TC (typhoon) activity particular their associated hazards sensitive local-scale characteristics. As such, it critically important numerically simulate (and other phenomenon) local scales order properly assess climate the region. In addition, projecting future changes of many TC-related...
Abstract Historical trends in the direction and magnitude of ocean surface wave height, period, or are debated due to diverse data, time-periods, methodologies. Using a consistent community-driven ensemble global products, we quantify establish regions with robust multivariate fields between 1980 2014. We find that about 30–40% experienced seasonal mean extreme direction. Most Southern Hemisphere exhibited strong upward-trending heights (1–2 cm per year) periods during winter summer. Ocean...
Abstract To evaluate the impacts of global warming on local‐scale extreme precipitation in Japan, 720‐year ensemble dynamical downscaling is conducted by a regional climate model with 5 km grid spacing. Our based large data set called database for Policy Decision making Future change (d4PDF). Comparing historical and 4K climates, annual maximum daily hourly are enhanced over Japan due to warming. The increasing rate larger coast Pacific Ocean eastern western northern parts Japan. periods...
On January 1 2024, at 16:10 JST, an earthquake of Mw 7.5 occurred underneath the Noto Peninsula Ishikawa Prefecture, Japan. This event caused a cascading disaster impact on cities in through series strong shakes, ground motions, slope failures, liquefaction, fire, and tsunamis. The tsunami first reached Suzu City few minutes after earthquake, eventually affecting approximately 340 km coast from to Niigata Prefectures. Coastal Engineering Committee Japan Society Civil Engineers conducted...