کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4553327 | 1328892 | 2011 | 14 صفحه PDF | دانلود رایگان |
We analyze tide gauge records at four stations of the ISPRA network located in the Adriatic Sea basin (Eastern Italy), namely, going from North to South: Trieste, Ancona, Ortona and Otranto. We use linear and nonlinear methods in the frequency and time domains, including spectral and Independent Component Analysis (ICA), inter-times occurrence, and phase space embedding dimension evaluation. We show that four tidal constituents can be extracted by ICA and interpreted as coherent self-sustained oscillations. Finally, we show that these constituents can be reproduced by adopting a simple nonlinear oscillatory model that generalizes classical Andronov oscillator with the inclusion of a time dependent pumping.
► We examine water level oscillations in the Adriatic Sea as coherent self-sustained oscillations.
► We demonstrate that a few main tidal constituents are involved in the dynamics.
► We introduce a forecast tidal modeling based on the nonlinear Andronov oscillator.
Journal: Progress in Oceanography - Volume 91, Issue 4, December 2011, Pages 447–460