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DatoValore
TitleInternal wave weather heterogeneity in a deep multi-basin subalpine lake resulting from wavelet transform and numerical analysis
AbstractThe internal wave-field of a Y-shaped lake (Lake Como, North Italy) was investigated over a 3-year long period applying wavelet time-frequency analysis to temperature and wind data time series, recorded at the edge of each of the three arms. The comparison with the results from a modal model allowed to identify the presence of both first and second vertical modes of oscillations. The field data analysis underlined a heterogeneous baroclinic response with the eastern arm decoupled from the remaining part of the lake constituted by the northern and western arms (north-south west transect). This disjoined response is expected to enhance the water exchange between the northern and the western arm, with relevant consequences on the inter-basins water exchanges and on the distribution of chemical and biological species. In the north-south west transect the analysis of the low power signals in winter underlined a residual internal wave activity ascribed to the first vertical free mode of oscillation (V1H1). © 2014 Elsevier Ltd.
SourceAdvances in water resources 71, pp. 149–161
KeywordsInternal wavesModal analysisMulti-basin lakesWavelet transform
JournalAdvances in water resources
EditorC.M.L. Publications,, Southampton, Regno Unito
Year2014
TypeArticolo in rivista
DOI10.1016/j.advwatres.2014.06.013
AuthorsGuyennon N.; Valerio G.; Salerno F.; Pilotti M.; Tartari G.; Copetti D.
Text296783 2014 10.1016/j.advwatres.2014.06.013 Scopus 2 s2.0 84904099025 Internal waves Modal analysis Multi basin lakes Wavelet transform Internal wave weather heterogeneity in a deep multi basin subalpine lake resulting from wavelet transform and numerical analysis Guyennon N.; Valerio G.; Salerno F.; Pilotti M.; Tartari G.; Copetti D. Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, Via Salaria km 29.300, 00015 Monterotondo, RM, Italy; Dipartimento, DICATAM, Universita degli Studi di Brescia, Via Branze 43, 25123 Brescia, Italy; Consiglio Nazionale delle Ricerche, Istituto di Ricerca Sulle Acque, UOS Brugherio, Via del Mulino, 19, 20861 Brugherio, Manitoba, Italy The internal wave field of a Y shaped lake Lake Como, North Italy was investigated over a 3 year long period applying wavelet time frequency analysis to temperature and wind data time series, recorded at the edge of each of the three arms. The comparison with the results from a modal model allowed to identify the presence of both first and second vertical modes of oscillations. The field data analysis underlined a heterogeneous baroclinic response with the eastern arm decoupled from the remaining part of the lake constituted by the northern and western arms north south west transect . This disjoined response is expected to enhance the water exchange between the northern and the western arm, with relevant consequences on the inter basins water exchanges and on the distribution of chemical and biological species. In the north south west transect the analysis of the low power signals in winter underlined a residual internal wave activity ascribed to the first vertical free mode of oscillation V1H1 . © 2014 Elsevier Ltd. 71 http //www.scopus.com/inward/record.url eid=2 s2.0 84904099025 partnerID=q2rCbXpz Internal wave weather heterogeneity in a deep multi basin subalpine lake resulting from wavelet transform and numerical analysis Guyennon_et_al_2014_AWR.pdf Articolo in rivista C.M.L. Publications, 0309 1708 Advances in water resources Advances in water resources Adv. water resour. Advances in water resources. nicolasdominique.guyennon GUYENNON NICOLAS diego.copetti COPETTI DIEGO franco.salerno SALERNO FRANCO gianni.tartari TARTARI GIANNI TA.P04.021.009 Trasporto degli inquinanti a scala di bacino e impatto sulle comunita biologiche