Runup of solitary waves on a circular Island

Liu, Philip L.‐F.; Cho, Yong-Sik; Briggs, Michael J.; Kânoğlu, Utku; Synolakis, Costas E.

doi:10.1017/s0022112095004095

Cited by 399 publications

(282 citation statements)

References 12 publications

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“…all three numerical sets. This is consistent with previous research (e.g., Liu et al, 1995), where it is shown that bottom friction effects are minor for nonbreaking waves, and will typically alter the runup by < 0.5% of the maximum. For larger wave heights, breaking is initiated, both experimentally and numerically, near e = 0.04.…”

Section: Nonbreaking and Breaking Solitary Wave Runupsupporting

confidence: 93%

“…The numerical results show less of a depression following the main wave than in the experiments. This deviation is consistent with other runup model tests (e.g., Liu et al, 1995;Chen et al, 2000). The agreement of Case C is especially notable, as the soliton breaks along the backside of the island as the trapped waves intersect.…”

Section: Runup On a Conical Islandsupporting

confidence: 90%

“…In addition to recording free surface elevation at a half dozen locations, maximum wave runup around the entire island was measured. This data set has been used by several researchers to validate numerical runup models (e.g., Liu et al, 1995;Titov and Synolakis, 1998;Chen et al, 2000). In this paper, free surface elevation is compared at the locations shown in Fig.…”

Section: Long Wave Resonance In a Parabolic Basinmentioning

confidence: 99%

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Modeling wave runup with depth-integrated equations

Lynett

Liu

2002

Coastal Engineering

362

212

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In this paper, a moving boundary technique is developed to investigate wave runup and rundown with depth-integrated equations. Highly nonlinear and weakly dispersive equations are solved using a high-order finite difference scheme. An eddy viscosity model is adopted for wave breaking so as to investigate breaking wave runup. The moving boundary technique utilizes linear extrapolation through the wet -dry boundary and into the dry region. Nonbreaking and breaking solitary wave runup is accurately predicted by the proposed model, yielding a validation of both the wave breaking parameterization and the moving boundary technique. Two-dimensional wave runup in a parabolic basin and around a conical island is investigated, and agreement with published data is excellent. Finally, the propagation and runup of a solitary wave in a trapezoidal channel is examined. D

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Section: Nonbreaking and Breaking Solitary Wave Runupsupporting

confidence: 93%

Section: Runup On a Conical Islandsupporting

confidence: 90%

Section: Long Wave Resonance In a Parabolic Basinmentioning

confidence: 99%

See 1 more Smart Citation

Modeling wave runup with depth-integrated equations

Lynett

Liu

2002

Coastal Engineering

362

212

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“…The COMCOT tsunami package has been extensively tested and compared with laboratory experiments for solitary waves climbing a circular island (Liu et al, 1995b). Different applications for various tsunamis events have been published including the 2004 Indian Ocean tsunami (Wang and Liu, 2006) and the 1960 Chilean tsunami recorded at Hilo, Hawaii (Liu et al, 1995a).…”

Section: Numerical Simulationsmentioning

confidence: 99%

“…Nonlinear convection terms are approximated using the upwind scheme. A numerical algorithm is employed together with the leap-frog method to find the limit between the dry and wet cells tracking the shoreline movements in time and space (Liu et al, 1995b). Numerical sponge layer at the limit of the computational domain is prescribed where the amplitude of incoming waves is dampened.…”

Section: Numerical Simulationsmentioning

confidence: 99%

Source of the tsunami generated by the 1650 AD eruption of Kolumbo submarine volcano (Aegean Sea, Greece)

Ulvrová

Paris

Nomikou

et al. 2016

Journal of Volcanology and Geothermal Research

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Abstract:The 1650 AD explosive eruption of Kolumbo submarine volcano (Aegean Sea, Greece) generated a destructive tsunami. In this paper we propose a source mechanism of this poorly documented tsunami using both geological investigations and numerical simulations. Sedimentary evidence of the 1650 AD tsunami was found along the coast of Santorini Island at maximum altitudes ranging between 3.5 m a.s.l. (Perissa, southern coast) and 20 m a.s.l. (Monolithos, eastern coast), corresponding to a minimum inundation of 360 and 630 m respectively. Tsunami deposits consist of an irregular 5 to 30 cm thick layer of dark grey sand that overlies pumiceous deposits erupted during the Minoan eruption and are found at depths of 30-50 cm below the surface.Composition of the tsunami sand is similar to the composition of the present-day beach sand but differs from the pumiceous gravelly deposits on which it rests. The spatial distribution of the tsunami deposits was compared to available historical records and to the results of numerical simulations of tsunami inundation. Different source mechanisms were tested: earthquakes, underwater explosions, caldera collapse, and pyroclastic flows. The most probable source of the 1650 AD Kolumbo tsunami is a 250 m high water surface displacement generated by underwater explosion with an energy of ~2 × 10 16 J at water depths between 20 and 150 m. The tsunamigenic explosion(s) occurred on September 29, 1650 during the transition between submarine and subaerial phases of the eruption. Caldera subsidence is not an efficient tsunami source mechanism as short (and probably unrealistic) collapse durations (< 5 minutes) are needed. Pyroclastic flows cannot be discarded, but the required flux (10 6 to 10 7 m³.s -1 ) is exceptionally high compared to the magnitude of the eruption.

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Effects of rupture complexity on local tsunami inundation: Implications for probabilistic tsunami hazard assessment by example

et al. 2015

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We investigated the influence of earthquake source complexity on the extent of inundation caused by the resulting tsunami. We simulated 100 scenarios with collocated sources of variable slip on the Hikurangi subduction interface in the vicinity of Hawke's Bay and Poverty Bay in New Zealand and investigated the tsunami effects on the cities of Napier and Gisborne. Rupture complexity was found to have a first-order effect on flow depth and inundation extent for local tsunami sources. The position of individual asperities in the slip distribution on the rupture interface control to some extent how severe inundation will be. However, predicting inundation extent in detail from investigating the distribution of slip on the rupture interface proves difficult. Assuming uniform slip on the rupture interface in tsunami models can underestimate the potential impact and extent of inundation. For example, simulation of an M w 8.7 to M w 8.8 earthquake with uniform slip reproduced the area that could potentially be inundated by equivalent nonuniform slip events of M w 8.4. Deaggregation, to establish the contribution of different sources with different slip distributions to the probabilistic hazard, cannot be performed based on magnitude considerations alone. We propose two predictors for inundation severity based on the offshore tsunami wavefield using the linear wave equations in an attempt to keep costly simulations of full inundation to a minimum.

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Runup of solitary waves on a circular Island

Cited by 399 publications

References 12 publications

Modeling wave runup with depth-integrated equations

Modeling wave runup with depth-integrated equations

Source of the tsunami generated by the 1650 AD eruption of Kolumbo submarine volcano (Aegean Sea, Greece)

Effects of rupture complexity on local tsunami inundation: Implications for probabilistic tsunami hazard assessment by example

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