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8 results on '"Sammarco, Paolo"'

1. Prototype data analysis of the dynamics of the Venice gate-barriers during an extreme storm event.

Author

Sammarco, Paolo, Fischione, Piera, Romano, Alessandro, Bellotti, Giorgio, and Dalla Villa, Sergio

Subjects
*STORM surges, *SEVERE storms, *ORTHOGONAL functions, *FREQUENCIES of oscillating systems, *FREE surfaces
Abstract

The MoSE barriers system was designed and constructed at the inlets of the Venice Lagoon (Italy) in order to limit and tame the flooding events in the Lagoon areas and in the City. The success of the design and operation of the system has been demonstrated by the significant reduction in the number and intensity of floods in the lagoon since its beginning of operations in 2020. In this study, we investigate the dynamical behavior of the MoSE system at full-scale by analyzing the barriers behavior during the severe storm event of November 22nd, 2022. In particular, the dynamical response of the Chioggia barrier to waves and storm surge is studied in detail. Spectral analysis of field records, barrier and inlet modal analyses and Empirical Orthogonal Functions (EOF) techniques are applied to provide a key for interpreting the actual behavior of such a complex system during a storm event, highlighting dominant frequencies and checking for the occurrence of resonance phenomena. First, a brief review of the experimental and theoretical studies carried out over the past forty years is given. Modal patterns of gates oscillations detected via EOF analysis confirm the presence of the eigenmodes of both the barrier and the inlet; however, the gates oscillations during the considered event are mild and the hydraulic performances of the system are satisfactory for the severe event studied. Further field measurements and future severe events should be studied to reach extended conclusions. • Field records of the MOSE gates' motions analyzed during a severe event (RP=30 yrs) • Spectral, modal, EOF methods estimate gates and free surface oscillations' frequencies • Some gates and inlet modal oscillations detected but with limited mode amplifications • Barrier long period oscillations driven by longitudinal and cross modes of the inlet [ABSTRACT FROM AUTHOR]

Published
2024
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6. Numerical Modeling of Low Frequency Hydro-acoustic Waves Generated By Submarine Tsunamigenic Earthquake.

Author

Abdolali, Ali, Cecioni, Claudia, Kirby, James T., Sammarco, Paolo, Bellotti, Giorgio, and Franco, Leopoldo

Abstract

The article discusses research which examined the low frequency hydro-acoustic waves generated by submarine tsunamigenic earthquake by numerical modeling. Topics discussed include the role of a viscous compressible sedimentary layer under sea water on the formation, propagation and attenuation of hydro-acoustic waves and depth integrated model for rigid bottom.

Published
2015

7. Met-Ocean and Heeling Analysis During the Violent 21/22 October 2014 Storm Faced by the Sailboat ECO40 in the Gulf of Lion: Comparison Between Measured and Numerical Wind Data

Author

Augusto Mazzoni, Paolo Sammarco, Davide Pasquali, Marcello Di Risio, Giorgio Bellotti, Paolo De Girolamo, Alessandro Romano, Alessandro Pezzoli, Mattia Crespi, Myrta Castellino, Leopoldo Franco, Cabri J.,Correia P.P., DE GIROLAMO, Paolo, Romano, Alessandro, Bellotti, Giorgio, Pezzoli, Alessandro, Castellino, Myrta, Crespi, Mattia Giovanni, Mazzoni, Augusto, DI RISIO, Marcello, Pasquali, Davide, Franco, Leopoldo, and Sammarco, Paolo

Subjects
010504 meteorology & atmospheric sciences, Meteorology, forecast, Wind, sailing boat, waves, wind, computer science (all), GPS signals, 01 natural sciences, Wind speed, Course (navigation), Sailing boat, 0103 physical sciences, Hindcast, Wave, 010303 astronomy & astrophysics, 0105 earth and related environmental sciences, business.industry, Computer Science (all), Storm, Wind direction, Inertial platform, Global Positioning System, Forecast, business, Geology
Abstract

On 19 October 2014 Matteo Miceli, a known italian oceanic sailor, left the Port of Riva di Traiano (Rome, IT) with the italian sailing boat ECO 40, for the Roma Ocean World Project. This ambitious challenge consists of a non-stop sailing alone around the World in energy and food self-sufficiency. ECO 40 is a Class 40 oceanic vessel (LOA of 12,0 m) that has been equipped with a data acquisition system for measuring both the met-ocean parameters recorded (apparent and real wind speed and wind direction, atmospheric pressure, current velocity, air temperature, sea temperature, etc.) and the kinematic characteristics of the boat itself (i.e., speed and course over ground). Furthermore, the boat has been equipped with three high precision GPS receivers, provided by Leica Geosystem, for measuring the motion of the boat and an inertial platform. Due to these high-precision instruments it is possible to fully measure and characterize the six degrees of freedom of the boat, and accordingly to use her as a sailing wave buoy. Within this paper we present the analysis of the met-ocean data measured by the boat during the storm occurred in the Gulf of Lion on the 21–22 October 2014 that ECO 40 has faced just few days after her departure. Furthermore, by analyzing the GPS signals by means of an innovative application of differential kinematic positioning technique, a detailed analysis of the boat heeling during the Gulf of Lion event has been carried out. The boat heeling measurements have been used to correct the measured wind data that have been compared with the hindcast time series.

Published
2016
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8. Numerical modeling of low frequency hydro-acoustic waves generated by submarine tsunamigenic earthquake

Author

Abdolali, A., Cecioni, C., Kirby, J. T., Sammarco, P., Giorgio Bellotti, Franco, L., International Society of Offshore and Polar Engineers, Abdolali, Ali, Cecioni, Claudia, Kirby, James T., Sammarco, Paolo, Bellotti, Giorgio, and Franco, Leopoldo

Subjects
Viscous sediment, Tsunami, Mechanical Engineering, Damping term, Energy Engineering and Power Technology, Ocean Engineering, Compressible fluid, Peak frequency, Hydro-acoustic wave
Abstract

We investigate the role of a viscous compressible sedimentary layer underlying sea water on the formation, propagation and attenuation of hydro-acoustic waves. The analysis of low frequency pressure waves can be used for evaluation of stratified sediment structure. Two models based on depth-integration, for rigid and permeable sea bed are presented. The hydro-acoustic waves modeling, hereinafter presented can be used for tsunami prediction in large scale domains, overcoming computational difficulties of three-dimensional models and therefore enhance the promptness and accuracy of Tsunami Early Warning Systems (TEWS).

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