A5011809976- earthquake and tectonic studies
- Coastal and Marine Dynamics
- Ocean Waves and Remote Sensing
- Tropical and Extratropical Cyclones Research
- Wave and Wind Energy Systems
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Geological and Geochemical Analysis
- Earthquake Detection and Analysis
- Earthquake and Tsunami Effects
- Fluid Dynamics Simulations and Interactions
- Oceanographic and Atmospheric Processes
- Methane Hydrates and Related Phenomena
- Ship Hydrodynamics and Maneuverability
- Seismology and Earthquake Studies
- Underwater Acoustics Research
- Geotechnical Engineering and Underground Structures
- Fluid Dynamics and Vibration Analysis
- Coastal wetland ecosystem dynamics
- Numerical methods in engineering
- Geology and Paleoclimatology Research
- Flood Risk Assessment and Management
- Seismic Imaging and Inversion Techniques
- Climate variability and models
- Underwater Vehicles and Communication Systems
University of Hawaiʻi at Mānoa
2016-2025
University of Hawaii System
2001-2017
University of Canterbury
2011
Oceanit (United States)
2006-2010
Tsinghua University
2006
City University of Hong Kong
1999-2004
Williams & Associates
2001-2002
Lawrence Livermore National Laboratory
1999
Sandwell College
1992-1993
University of British Columbia
1991-1993
Abstract This paper describes the formulation, verification, and validation of a depth‐integrated, non‐hydrostatic model with semi‐implicit, finite difference scheme. The formulation builds on nonlinear shallow‐water equations utilizes pressure term to describe weakly dispersive waves. A momentum‐conserved advection scheme enables modeling breaking waves without aid analytical solutions for bore approximation or empirical energy dissipation. An upwind extrapolates free‐surface elevation...
A computational algorithm based on the multiquadric, which is a continuously differentiable radial basis function, devised to solve shallow water equations. The numerical solutions are evaluated at scattered collocation points and spatial partial derivatives formed directly from of not by any difference scheme. method does require generation grid as in finite-element allows easy editing refinement model. To increase confidence multiquadric solution, sensitivity convergence analysis performed...
Abstract Tsunamis generated by earthquakes involve physical processes of different temporal and spatial scales that extend across the ocean to shore. This paper presents a shock‐capturing dispersive wave model in spherical coordinate system for basin‐wide evolution coastal run‐up tsunamis discusses implementation two‐way grid‐nesting scheme describe dynamics at resolution compatible processes. The depth‐integrated describes waves through non‐hydrostatic pressure vertical velocity, which also...
[1] The 2010 Chile earthquake of Mw 8.8 generated a destructive tsunami in the near field that resulted warnings across Pacific. Numerical modeling shows trapping and amplification energy over continental shelf slope. A spectral analysis computed surface elevation reveals resonance oscillations with periods up to 129 min along central coast. temporal data provides an explanation for long-period waves recorded by DART buoys prolonged wave activities belated impacts reported residents survey...
The massive tsunami generated by the 11 March 2011 Tohoku earthquake (M w 9.0) was widely recorded GPS buoys, wave gauges, and ocean bottom pressure sensors around source.Numerous inversions for finite-fault slip time histories have been performed using seismic and/ or geodetic observations, yielding generally consistent patterns of large co-seismic offshore near hypocenter and/or up-dip trench, where estimated peak is ∼60 m.Modeling generation near-field processes two detailed rupture...
Abstract The 13 November 2016 Kaikoura, New Zealand, M w 7.8 earthquake ruptured multiple crustal faults in the transpressional Marlborough and North Canterbury tectonic domains of northeastern South Island. Hikurangi trench underthrust Pacific slab terminate region south as subdution zone transitions to Alpine fault strike‐slip regime. It is difficult establish whether any coseismic slip occurred on megathrust from on‐land observations. rupture generated a tsunami well recorded at tide...
Abstract The 1938 M S 8.3 and 2021 W 8.2 earthquakes both ruptured within the Semidi segment of Aleutian‐Alaska subduction zone. large‐slip distribution event is well constrained depth range 25–45 km, with seaward tsunami observations excluding significant shallower coseismic slip. slip more uncertain. Regional far‐field tide gauge for are modeled to constrain location large largest (2.0 m) located below continental shelf on a 180‐km‐long portion rupture extending further northeast than...
Mentawai, Indonesia earthquake (M w 7.8) ruptured the shallow portion of subduction zone seaward Mentawai islands, off-shore Sumatra, generating 3 to 9 m tsunami run-up along southwestern coasts Pagai Islands that took at least 431 lives.Analyses teleseismic P, SH and Rayleigh waves for finite-fault source rupture characteristics indicate ∼90 s duration with a low velocity ∼1.5 km/s on 10°dipping megathrust, total slip 2-4 over an ∼100 km long region.The seismic moment-scaled energy release...
The 2009 Samoa tsunami resulted in severe damage and inundation at Tutuila, American Samoa. disparity of the impact varying accounts along coast remain one most intriguing aspects event. We utilize a dispersive wave model to reconstruct from earthquake source for understanding dynamics around Tutuila. After validation with water‐level measurements, Fast Fourier Transform computed surface elevation reveals coupled resonance oscillations between 3 18 min period over insular slope shelf as well...
Abstract The 25 October 2010 Mentawai tsunami earthquake ( M w 7.8) ruptured the shallow portion of Sunda megathrust seaward Islands, offshore Sumatra, Indonesia, generating a strong that took 509 lives. rupture zone was updip those 12 September 2007 8.5 and 7.9 underthrusting earthquakes. High‐rate (1 s sampling) GPS instruments Sumatra Array network deployed on Islands mainland recorded time‐varying static ground displacements at epicentral distances from 49 to 322 km. Azimuthally...
Abstract The unprecedented geophysical and hydrographic data sets from the 2011 Tohoku earthquake tsunami have facilitated numerous modeling inversion analyses for a wide range of dislocation models. Significant uncertainties remain in slip distribution as well possible contribution excitation submarine slumping or anelastic wedge deformation. We seek self‐consistent model primary teleseismic observations through an iterative approach that begins with downsampling finite fault inverted...
Abstract On 8 September 2017, a great ( M w 8.2) normal faulting earthquake ruptured within the subducting Cocos Plate ~70 km landward from Middle American Trench beneath Tehuantepec gap. Iterative inversion and modeling of teleseismic tsunami data prediction GPS displacements indicate that steeply dipping rupture extended ~180 to northwest along strike toward Oaxaca coast ~30 70 in depth, with peak slip ~13 m. The likely broke through entire lithosphere young subducted slab response downdip...
Abstract A major ( M W 7.9) intraplate earthquake ruptured the Pacific plate seaward of Alaska subduction zone near Kodiak Island on 23 January 2018. The aftershock seismicity is diffuse, with both NNW‐ and ENE‐trending distributions, while long‐period point source moment tensors have near‐horizontal compressional tensional principal strain axes significant non‐double‐couple components. Backprojections from three large‐aperture networks indicate sources short‐period radiation not aligned...