Internal wave weather heterogeneity in a deep multi-basin subalpine lake resulting from wavelet transform and numerical analysis

被引：21

作者：

Guyennon, N. ^{[1
]}

Valerio, G. ^{[2
]}

Salerno, F. ^{[3
]}

Pilotti, M. ^{[2
]}

Tartari, G. ^{[3
]}

Copetti, D. ^{[3
]}

机构：

[1] CNR, Ist Ric Acque, I-00015 Monterotondo, RM, Italy

[2] Univ Brescia, Dipartimento DICATAM, I-25123 Brescia, Italy

[3] UOS Brugherio, CNR, Ist Ric Acque, I-20861 Brugherio, MB, Italy

来源：

ADVANCES IN WATER RESOURCES | 2014年 / 71卷

关键词：

Internal waves; Multi-basin lakes; Wavelet transform; Modal analysis; STRATIFIED LAKE; SEASONAL EVOLUTION; VERTICAL-MODES; SEICHE; WIND; DYNAMICS; ENVIRONMENTS; PRODUCTIVITY; RESERVOIR; KINNERET;

D O I：

10.1016/j.advwatres.2014.06.013

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

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). (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：149 / 161

页数：13

共 60 条

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