Observing meteotsunamis (“Marrobbio”) on the southwestern coast of Sicily

Petra Zemunik, Angelo Bonanno (), Salvatore Mazzola, Giovanni Giacalone, Ignazio Fontana, Simona Genovese, Gualtiero Basilone, Julio Candela, Jadranka Šepić, Ivica Vilibić and Salvatore Aronica
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Petra Zemunik: Institute of Oceanography and Fisheries
Angelo Bonanno: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Salvatore Mazzola: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Giovanni Giacalone: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Ignazio Fontana: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Simona Genovese: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Gualtiero Basilone: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola
Julio Candela: Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE)
Jadranka Šepić: Institute of Oceanography and Fisheries
Ivica Vilibić: Institute of Oceanography and Fisheries
Salvatore Aronica: Istituto per lo studio degli impatti Antropici e Sostenibilità in ambiente marino, Consiglio Nazionale delle Ricerche, UOS di Capo Granitola

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2021, vol. 106, issue 2, No 11, 1337-1363

Abstract: Abstract The paper presents sea level and air pressure observations acquired during the 2007 experiment carried out along the southwestern coast of Sicily. The experiment aimed to quantify the atmospheric and oceanic conditions related with the phenomenon of marrobbio, a kind of meteotsunami that is frequently observed in the Strait of Sicily. Sea level data measured at surrounding tide gauges, radio-sounding atmospheric profiles and ERA5 reanalysis data conjoined the analysis. Rapid air pressure and sea level oscillations were measured simultaneously during marrobbio events, while the atmospheric disturbances were estimated to propagate mostly towards east-northeast with a predominant speed of 19–24 m/s. The observed propagation direction and speed were found conducive for generation of long ocean waves through Proudman resonance over a wide outer shelf, although a complex bathymetry in front of affected area may strongly modify the generation. The atmospheric patterns were favourable for wave ducting mechanism during most of the observed marrobbio events. A need for establishing long-term high-frequency observations at marrobbio hot spots, as well to apply high-resolution atmospheric and oceanic models for proper quantification of meteotsunamis, is emphasized.

Keywords: Strait of Sicily; High-frequency observations; Meteotsunami; Proudman resonance (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s11069-020-04303-2

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