Longwave Measurements for the Coast of British Columbia and Improvements to the Tsunami Warning Capability

Rabinovich, Alexander B.; Stephenson, F.

doi:10.1023/b:nhaz.0000035549.26392.c8

Cited by 46 publications

(49 citation statements)

References 23 publications

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“…Eliminating the influence of topography and restoring the source, it is possible to identify these phenomena and gain insight into their nature. In particular, Rabinovich and Stephenson (2004) examined in this way the tide gauge records for the coast of British Columbia and demonstrated some found differences between tsunami and meteotsunamis reconstructed source functions.…”

Section: Discussionmentioning

confidence: 99%

“…Both tsunamis and meteotsunamis are determined by two major factors: (1) source, and (2) topography (cf. Rabinovich, 1997;Monserrat et al, 1998;Rabinovich and Stephenson, 2004). Topography for both phenomena is the same, but their sources are different.…”

Section: Similarities and Differences Between Ordinary Tsunamis And Mmentioning

confidence: 99%

“…A major seismic tsunami is a transoceanic (sometimes even global) event that can have a destructive effect on coasts located many thousands of kilometres from the source area (as was observed for the catastrophic Sumatra tsunami of 26 December 2004 in the Indian Ocean, see Titov et al, 2005;Rabinovich et al, 2006). In contrast, meteotsunamis are always local; damaging oscillations are normally observed only in a specific bay (harbour) or in a few neighbouring bays.…”

Section: Generationmentioning

confidence: 99%

“…Rabinovich, 1997) and occupied approximately the same frequency band (∼1-30 cph). Rabinovich and Stephenson (2004), using the data from the same stations at the coast of British Columbia (Pacific coast of Canada), examined source functions for storm-generated ocean waves and for the 2001 Peru tsunami waves and found only minor differences mainly related to the influence of wind waves and swell on stormgenerated long waves.…”

Section: Generationmentioning

confidence: 99%

“…In fact, there are some possibilities to identify "the source mechanism of the seiche excitations only by analyzing the sea level records" (cf. Rabinovich and Stephenson, 2004). However, such identification is far from trivial because most of the tsunami and meteotsunami properties are very similar.…”

Section: Inundation and Harbour Resonancementioning

confidence: 99%

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Meteotsunamis: atmospherically induced destructive ocean waves in the tsunami frequency band

Monserrat

Vilibić

Rabinovich

2006

Nat. Hazards Earth Syst. Sci.

430

393

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Abstract. In light of the recent enhanced activity in the study of tsunami waves and their source mechanisms, we consider tsunami-like waves that are induced by atmospheric processes rather than by seismic sources. These waves are mainly associated with atmospheric gravity waves, pressure jumps, frontal passages, squalls and other types of atmospheric disturbances, which normally generate barotropic ocean waves in the open ocean and amplify them near the coast through specific resonance mechanisms (Proudman, Greenspan, shelf, harbour). The main purpose of the present study is to describe this hazardous phenomenon, to show similarities and differences between seismic and meteorological tsunamis and to provide an overview of meteorological tsunamis in the World Ocean. It is shown that tsunamis and meteotsunamis have the same periods, same spatial scales, similar physical properties and affect the coast in a comparably destructive way. Some specific features of meteotsunamis make them akin to landslide-generated tsunamis. The generation efficiency of both phenomena depend on the Froude number (Fr), with resonance taking place when Fr∼1.0. Meteotsunamis are much less energetic than seismic tsunamis and that is why they are always local, while seismic tsunamis can have globally destructive effects. Destructive meteotsunamis are always the result of a combination of several resonant factors; the low probability of such a combination is the main reason why major meteotsunamis are infrequent and observed only at some specific locations in the ocean.

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Section: Discussionmentioning

confidence: 99%

Section: Similarities and Differences Between Ordinary Tsunamis And Mmentioning

confidence: 99%

Section: Generationmentioning

confidence: 99%

Section: Generationmentioning

confidence: 99%

Section: Inundation and Harbour Resonancementioning

confidence: 99%

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