Banded structure of drifting macroalgae

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• 作者：Fangli Qiao ; Dejun Dai ; John Simpson ; Harald Svendsen
• 关键词：Macroalgae ; Western Yellow Sea ; Banded structure ; Separation distance between neighboring bands ; Log-normal distribution
• 刊名：Marine Pollution Bulletin
• 出版年：2009
• 出版时间：December 2009
• 年：2009
• 卷：58
• 期：12
• 页码：1792-1795
• 全文大小：485 K

文摘

A massive bloom of macroalgae occurred in the western Yellow Sea at the end of May, 2008, and lasted for nearly 2 months. The surface-drifting macroalgae was observed to accumulate in a pattern dominated by linear bands. The maximum length of individual algal bands exceeded 10 km and the distance between neighboring bands ranged from hundreds of meters to 6 km. Seven satellite images were analyzed to determine the distances between neighboring bands. Proportions of about 24 % , 38 % , and 22 % are responsible for the separation distances smaller than 1 km, between 1 and 2 km, and between 2 and 3 km, respectively. The separation of about five percent of the bands exceeds 4 km. The probability distribution of the separation distance is quite close to log-normal which is that found in Langmuir circulation. However, the observed algal band separation greatly exceeds the distances between convergence lines reported in Langmuir circulation.