Difference between revisions of "Meteotsunami"

From Glossary of Meteorology
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== meteotsunami ==
 
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<div class="definition"><div class="short_definition">[[long wave|Long-wave]] [[disturbance|disturbances]] of the [[ocean]] surface driven by [[atmospheric pressure]] variations associated with fast-moving [[weather]] events such as [[thunderstorm|thunderstorms]], [[squall|squalls]], and other [[storm]] [[front|fronts]]. Proudman [[resonance]] is believed to play a significant role in the formation of meteotsunamis via the coupling of the [[wave motion|wave propagation]] [[velocity]] with that of the weather front, after which the [[wave]] can become detached from the [[weather system]] and impact remote coastlines without an associated [[weather warning]]. The storm generates waves that move both offshore and toward the shore and can be amplified by a shallow [[continental shelf]], inlets, bays, and other coastal features.</div></div><br/>
  
<div class="definition"><div class="short_definition">(''Also called'' meteorological tsunami.) A [[tsunami]]-like wave phenomenon generated by a meteorological or atmospheric disturbance.</div><br/> <div class="paragraph">Meteotsunami are caused by traveling air pressure disturbances associated with atmospheric [[gravity waves]], [[pressure jumps]], [[frontal passage]]s, [[squalls]], [[gales]], [[typhoon]]s, [[hurricanes]], and other atmospheric sources. These generate barotropic ocean waves in the open ocean through resonance, which can subsequently be amplified near the coast through shoaling and basin resonance.</div><br/>Reference: <br/>
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<p>''Term edited 20 May 2021.''</p>
Intergovernmental Oceanographic Commission, 2013: Tsunami glossary. Revised ed. UNESCO IOC Tech. Series 85, 42 pp. <nowiki>[Available online at http://unesdoc.unesco.org/images/0018/001882/188226E.pdf]</nowiki>
 
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</div><br/>''term added 12 Dec 2014''
 
  
 
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Latest revision as of 12:24, 20 May 2021

meteotsunami

Long-wave disturbances of the ocean surface driven by atmospheric pressure variations associated with fast-moving weather events such as thunderstorms, squalls, and other storm fronts. Proudman resonance is believed to play a significant role in the formation of meteotsunamis via the coupling of the wave propagation velocity with that of the weather front, after which the wave can become detached from the weather system and impact remote coastlines without an associated weather warning. The storm generates waves that move both offshore and toward the shore and can be amplified by a shallow continental shelf, inlets, bays, and other coastal features.


Term edited 20 May 2021.