Local amplification of storm surge by Super Typhoon Haiyan in Leyte Gulf

Mori, Nobuhito; Kato, Masaaki; Kim, Sooyoul; Mase, Hajime; Shibutani, Yoko; Takemi, Tetsuya; Tsuboki, Kazuhisa; Yasuda, Tomohiro

doi:10.1002/2014gl060689

Cited by 187 publications

(133 citation statements)

References 12 publications

(15 reference statements)

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“…For the Leyte Gulf and in particular San Pedro Bay off Tacloban, Mori et al (2014) conclude that amplification of storm surge-induced water levels was due to seiches, also provoking the specific inundation pattern of distinct flooding pulses observed by residents.…”

Section: Origin Of Exceptional Flooding Patternmentioning

confidence: 87%

“…These processes may include, in addition to incident (potentially very high) gravity waves and (or on top of) pressure-and wind-driven storm surge, meteo-tsunamis or seiches (Mori et al, 2014), as well as infragravity waves with periods of up to several minutes. The sustained high-velocity coastal flooding resulting from these infragravity waves, in combination with inundation depths of several metres, is capable of transporting clasts similar to palaeo-deposits commonly related to tsunamis.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Block and boulder transport in Eastern Samar (Philippines) during Supertyphoon Haiyan

May¹,

Engel²,

Brill³

et al. 2015

Earth Surf. Dynam.

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Abstract. Fields of dislodged boulders and blocks record catastrophic coastal flooding during strong storms or tsunamis and play a pivotal role in coastal hazard assessment. Along the rocky carbonate coast of Eastern Samar (Philippines) we documented longshore transport of a block of 180 t and boulders (up to 23.5 t) shifted upslope to elevations of up to 10 m above mean lower low water level during Supertyphoon Haiyan on 8 November 2013. Initiation-of-motion approaches indicate that boulder dislocation occurred with flow velocities of 8.9-9.6 m s −1 , which significantly exceeds depth-averaged flow velocities of a local coupled hydrodynamic and wave model (Delft3D) of the typhoon with a maximum < 1.5 m s −1 . These results, in combination with recently published phase-resolving wave models, support the hypothesis that infragravity waves induced by the typhoon were responsible for the remarkable flooding pattern in Eastern Samar, which are not resolved in phase-averaged storm surge models. Our findings show that tsunamis and hydrodynamic conditions induced by tropical cyclones may shift boulders of similar size and, therefore, demand a careful re-evaluation of storm-related transport where it, based on the boulder's sheer size, has previously been ascribed to tsunamis.

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Section: Origin Of Exceptional Flooding Patternmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Block and boulder transport in Eastern Samar (Philippines) during Supertyphoon Haiyan

May¹,

Engel²,

Brill³

et al. 2015

Earth Surf. Dynam.

View full text Add to dashboard Cite

show abstract

“…It can be seen that as the storm approached the coast, while moving in the northwest direction, water level in the northern-rim of BoB increased. The surface water piles up due to the mass transport from offshore to onshore in generating the storm surge (Mori et al 2014) as the storm associated strong wind stress exert parallel to the sea surface (Sinha et al 2008). The shallower bathymetry in the continental shelf region, the coastal orientation and the basin geometry of the BoB enhanced the surface water level in northern rim.…”

Section: Resultsmentioning

confidence: 99%

Development of tropical cyclone wind field for simulation of storm surge/sea surface height using numerical ocean model

Das

Mohanty

Indu

2015

Model. Earth Syst. Environ.

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Coupled ocean-atmospheric phenomenon such as tropical cyclones (TC's) is governed by geophysical fluid dynamics. TC associated strong wind stress transfer momentum energy to the ocean surface that acts as the prime mechanism in modulating the sea surface and in generating the storm surge. A primitive equation, Princeton ocean model (POM) with free surface, sigma (terrain-following) coordinates and realistic bottom topography is configured in Bay of Bengal (BoB) to simulate the storm surge/sea surface height (SSH) and surface currents during a super cyclone TC05B 1999. TC wind fields are developed by adopting a suitable formulation based on partial conservation of angular momentum. Modeled TC wind fields are superimposed with QuikSCAT Satellite/National Centre for Environmental Prediction (QSCAT/NCEP) blended ocean surface winds to drive the three-dimensional ocean model. Model simulated storm surge and SSH are compared with limited available surge estimates/observations and multi-satellite observed AVISO (Archive, Validation and Interpolation of Satellite Oceanography) SSH, respectively to evaluate its performance.

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“…Among tropical cyclones of November, 2013 the super typhoon Hiayan is of great interest (Mori et al, 2014). It was formed in the North West Pacific and evolved over the deeply warmed ocean (Lin et al, 2014) on 11/02 -11/11 moving quickly ashore by almost straight westward trajectory.…”

Section: Tropical Cyclones In November 2013mentioning

confidence: 99%

Satellite radiothermovision of atmospheric mesoscale processes: case study of tropical cyclones

Ermakov

Шарков

Chernushich

2015

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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ABSTRACT:Satellite radiothermovision is a set of processing techniques applicable for multisource data of radiothermal monitoring of oceanatmosphere system, which allows creating dynamic description of mesoscale and synoptic atmospheric processes and estimating physically meaningful integral characteristics of the observed processes (like avdective flow of the latent heat through a given border). The approach is based on spatiotemporal interpolation of the satellite measurements which allows reconstructing the radiothermal fields (as well as the fields of geophysical parameters) of the ocean-atmosphere system at global scale with spatial resolution of about 0.125° and temporal resolution of 1.5 hour. The accuracy of spatiotemporal interpolation was estimated by direct comparison of interpolated data with the data of independent asynchronous measurements and was shown to correspond to the best achievable as reported in literature (for total precipitable water fields the accuracy is about 0.8 mm). The advantages of the implemented interpolation scheme are: closure under input radiothermal data, homogeneity in time scale (all data are interpolated through the same time intervals), automatic estimation of both the intermediate states of scalar field of the studied geophysical parameter and of vector field of effective velocity of advection (horizontal movements). Using this pair of fields one can calculate the flow of a given geophysical quantity though any given border. For example, in case of total precipitable water field, this flow (under proper calibration) has the meaning of latent heat advective flux. This opportunity was used to evaluate the latent heat flux though a set of circular contours, enclosing a tropical cyclone and drifting with it during its evolution. A remarkable interrelation was observed between the calculated magnitude and sign of advective latent flux and the intensity of a tropical cyclone. This interrelation is demonstrated in several examples of hurricanes and tropical cyclones of August, 2000, and typhoons of November, 2013, including super typhoon Haiyan.

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Local amplification of storm surge by Super Typhoon Haiyan in Leyte Gulf

Cited by 187 publications

References 12 publications

Block and boulder transport in Eastern Samar (Philippines) during Supertyphoon Haiyan

Block and boulder transport in Eastern Samar (Philippines) during Supertyphoon Haiyan

Development of tropical cyclone wind field for simulation of storm surge/sea surface height using numerical ocean model

Satellite radiothermovision of atmospheric mesoscale processes: case study of tropical cyclones

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