Eddy formation behind a coastal cape in a flow generated by transient longshore wind (Numerical experiments) |
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Authors: | Email author" target="_blank">V?M?ZhurbasEmail author N?P?Kuzmina D?A?Lyzhkov |
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Institution: | 1.Shirshov Institute of Oceanology,Russian Academy of Sciences,Moscow,Russia;2.Marine Systems Institute at Tallinn University of Technology,Tallinn,Estonia |
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Abstract: | It is shown that the process of eddy formation behind a coastal cape essentially depends on the method by which longshore flow is generated. Numerical simulations of the flow around a cape generated by transient longshore wind have revealed different modes of eddy formation in a rotating stratified environment depending on such dimensionless parameters as the Burger and Kibel–Rossby numbers, Bu and Ro, respectively. At Ro < 0.6, depending on the magnitude of Bu, either a trapped anticyclonic or cyclonic eddy (at Bu < 0.2) or periodic eddy shedding (at Bu < 0.2) forms. The eddies are weakened and stretched along the coastline at 0.4–0.6 < Ro < 1.4 and ultimately disappear at Ro < 1.4. |
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