This paper deals with the analysis of drifter campaigns realized in two different domains, the Gulf of Mexico and the Mar Grande Basin (Italy). Relative dispersion, diffusivity, and velocity variance were estimated, identifying different growth regimes. An exponential growth of the dispersion process was detected during the initial phase of deployment, and empirical laws for horizontal diffusivity were inferred. Velocity variance and integral time scale of the turbulence were obtained by using different techniques capable of evaluating short-term dispersion phenomena and sub-mesoscale turbulence. A spectral analysis realized in accordance with Taylor’s theory was used to estimate the Lagrangian time scale in domains strongly affected by inertial oscillations.

Statistical analysis of turbulent dispersion in the sea surface layer based on satellite-tracked drifter data / Pini, Agnese; Leuzzi, Giovanni; Monti, Paolo. - In: INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING. - ISSN 1053-5381. - 28:3(2018), pp. 240-247. [10.17736/ijope.2018.ak29]

Statistical analysis of turbulent dispersion in the sea surface layer based on satellite-tracked drifter data

Agnese Pini
;
Giovanni Leuzzi;Paolo Monti
2018

Abstract

This paper deals with the analysis of drifter campaigns realized in two different domains, the Gulf of Mexico and the Mar Grande Basin (Italy). Relative dispersion, diffusivity, and velocity variance were estimated, identifying different growth regimes. An exponential growth of the dispersion process was detected during the initial phase of deployment, and empirical laws for horizontal diffusivity were inferred. Velocity variance and integral time scale of the turbulence were obtained by using different techniques capable of evaluating short-term dispersion phenomena and sub-mesoscale turbulence. A spectral analysis realized in accordance with Taylor’s theory was used to estimate the Lagrangian time scale in domains strongly affected by inertial oscillations.
2018
absolute dispersion; drifters; horizontal diffusivity; Lagrangian time scale; Lagrangian transport; marine turbulence; relative dispersion; civil and structural engineering; ocean engineering; mechanical engineering
01 Pubblicazione su rivista::01a Articolo in rivista
Statistical analysis of turbulent dispersion in the sea surface layer based on satellite-tracked drifter data / Pini, Agnese; Leuzzi, Giovanni; Monti, Paolo. - In: INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING. - ISSN 1053-5381. - 28:3(2018), pp. 240-247. [10.17736/ijope.2018.ak29]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1183695
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