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An isolated cyclonic free eddfy was generated in a rotating basin with the (topographic) beta-effect by locally cooling the water surface, and its structure and evolution were observed by means of flo...w visualization methods. After an initial adjustment period, the cold core eddy exhibited a fairly good vertical coherence. Clearly the eddy was of the Rankine type having a net circulation (𝚪≠0) in contrast to the Gaussian eddy (𝚪=0). The cyclonic main eddy moved west or southwest (the southward movement took place mainly in the initial adjustment period). Weak vortices and streamings were certainly induced around the main eddy, but the induced flow pattern was of transient nature and quite dissimilar to the "herringbone" pattern predicted by previous numerical experiments for the Gaussian eddy. It is now obvious that the Gaussian eddy cannot necessarily be representative of cyclonic eddies.続きを見る
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Mendeley出力
033100_p001