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Adriatic meteotsunami events of 25-26 June 2014: observations, numerical modelling and assessment of atmospheric processes (CROSBI ID 625667)

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Šepić, Jadranka ; Vilibić, Ivica ; Međugorac, Iva ; Telišman-Prtenjak, Maja ; Janeković, Ivica ; Dunić, Natalija Adriatic meteotsunami events of 25-26 June 2014: observations, numerical modelling and assessment of atmospheric processes // IUGG 26th General Assembly Prag, Češka Republika, 22.06.2015-02.07.2015

Podaci o odgovornosti

Šepić, Jadranka ; Vilibić, Ivica ; Međugorac, Iva ; Telišman-Prtenjak, Maja ; Janeković, Ivica ; Dunić, Natalija

engleski

Adriatic meteotsunami events of 25-26 June 2014: observations, numerical modelling and assessment of atmospheric processes

A series of destructive meteorological tsunamis struck several regions in the Mediterranean and the Black Sea during the period of 23 to 27 June 2014. One of the affected areas was the Adriatic Sea. During morning and afternoon hours of 25 June, four bays in the middle Adriatic were hit by tsunami-like waves with maximum observed wave-heights up to 3 m. The waves were accompanied by strong destructive currents with eyewitnessed velocities up to 5 m/s. One day later, on 26 June, slightly weaker tsunami-like waves with wave heights up to 1 m were observed in two bays in the middle Adriatic as well. During the period a number of individual air pressure perturbations were recorded over the middle Adriatic area. Pressure oscillations were characterized by: abrupt air pressure changes > 1 hPa/5 min, limited cross-propagation dimensions (~20 - 40 km), and speeds of propagation of 30-40 m/s. Passage of air pressure oscillations over affected bays coincided with onset times of tsunami-like waves, supporting that these events were indeed meteotsunamis. Deeper analysis of general synoptic conditions, radio sounding data, satellite images and outputs of atmospheric numerical models suggested that observed air pressure oscillations were ducted atmospheric gravity waves. High-frequency sea level oscillations with wave heights up to 60 cm were recorded at numerous tide-gauge stations at the western and eastern coast of the middle and south Adriatic region, coincident to times of the observed meteotsunami events. Significant amount of available tide gauge data along with detailed eyewitnesses reports, and use of numerical ocean model, allowed for a detailed study of generation, propagation and amplification of meteotsunami waves in the Adriatic Sea.

meteotsunamis ; Adriatic Sea

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Podaci o prilogu

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Podaci o skupu

IUGG 26th General Assembly

poster

22.06.2015-02.07.2015

Prag, Češka Republika

Povezanost rada

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