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Multi-meteotsunami event in the Adriatic Sea generated by atmospheric disturbances of 25–26 June 2014 (CROSBI ID 225297)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Šepić, Jadranka ; Međugorac, Iva ; Janeković, Ivica ; Dunić, Natalija ; Vilibić, Ivica Multi-meteotsunami event in the Adriatic Sea generated by atmospheric disturbances of 25–26 June 2014 // Pure and applied geophysics, 173 (2016), 12; 4117-4138. doi: 10.1007/s00024-016-1249-4

Podaci o odgovornosti

Šepić, Jadranka ; Međugorac, Iva ; Janeković, Ivica ; Dunić, Natalija ; Vilibić, Ivica

engleski

Multi-meteotsunami event in the Adriatic Sea generated by atmospheric disturbances of 25–26 June 2014

A series of meteotsunamis hit a few locations in the Mediterranean and Black Seas during 22– 27 June 2014. Meteot- sunamis were particularly numerous on 25 and 26 June in the Adriatic Sea, where at least six harbours and bays were stricken by ˇ powerful waves: strongest events occurred in Vela Luka (Korcula Island), a known meteotsunami hot-spot, where waves reached ˇ height of *3 m, and in Rijeka dubrovacka Bay, where strong *5 m/s currents accompanied *2.5 m high waves. Inten- sification of high-frequency sea level activity was observed at both the eastern and western Adriatic tide gauge stations, with maximum recorded wave heights reaching *68 cm (Ortona, Italy). A series of individual air pressure disturbances characterized by pronounced rates of air pressure change (up to 2.4 hPa/5 min), limited spatial extent (*50 km) and high temporal variability, propagated over the Adriatic on 2 days in question. Numerical hydrodynamic model SCHISM forced by measured and idealised air pressure distur- bances was utilised to reproduce the observed Adriatic sea level response. Several important conclusions were reached: (1) meteotsunamis occurring at various parts of the coast were gen- erated by different atmospheric air pressure disturbances ; (2) topographic influence can be removed from sea level spectra by computing spectral signal- to-background ratios ; the result, being related to the external forcing, resembles atmospheric pressure spectra ; (3) sea response is strongly dependant on details of atmospheric forcing ; and (4) over complex bathymetries, like the middle and south Adriatic ones, numerous effects, including Proudman resonance, edge waves, strong topographical enhance- ment and refractions on the islands placed on the pathway of atmospheric disturbances should be taken into account to fully understand meteotsunami generation and dynamics. An in- depth numerical study is planned to supplement the latter conclusion and to quantify contribution of each process.

Meteotsunami ; Adriatic Sea ; hydrodynamic modelling ; Proudman resonance ; atmospheric pressure disturbances

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Podaci o izdanju

173 (12)

2016.

4117-4138

objavljeno

0033-4553

10.1007/s00024-016-1249-4

Povezanost rada

Geofizika

Poveznice
Indeksiranost