Detection of short-period sea level oscillations in the Gulf of Genoa

Picco, Paola; Demarte, Maurizio; D'Epifanio, Riccardo; Guideri, Matteo; Repetti, Luca; Morucci, Sara; Ferla, Maurizio

doi:10.1109/oceanse.2017.8084614

Cited by 1 publication

(1 citation statement)

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“…Minor peaks are at 45 min and 10 min, as well as in the swell band at 4-5 minutes. Time frequency analysis [43][44][45] using a centered window 720 min wide and moving at 180 min steps was then performed on each yearly sample. The chosen window and overlap lengths were long enough to ensure adequate spectral resolution, and short enough to detect the occurrences of the events that, in some cases, lasted for just a few hours.…”

Section: Event Detection By Time-frequency Analysismentioning

confidence: 99%

Detection and Characterization of Meteotsunamis in the Gulf of Genoa

Picco¹,

Schiano

Incardone³

et al. 2019

JMSE

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A long-term time series of high-frequency sampled sea-level data collected in the port of Genoa were analyzed to detect the occurrence of meteotsunami events and to characterize them. Time-frequency analysis showed well-developed energy peaks on a 26–30 minute band, which are an almost permanent feature in the analyzed signal. The amplitude of these waves is generally few centimeters but, in some cases, they can reach values comparable or even greater than the local tidal elevation. In the perspective of sea-level rise, their assessment can be relevant for sound coastal work planning and port management. Events having the highest energy were selected for detailed analysis and the main features were identified and characterized by means of wavelet transform. The most important one occurred on 14 October 2016, when the oscillations, generated by an abrupt jump in the atmospheric pressure, achieved a maximum wave height of 50 cm and lasted for about three hours.

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Section: Event Detection By Time-frequency Analysismentioning

confidence: 99%