The hydrodynamics principle of the spilled oil tracking buoy is analyzed in this paper. The relativity of the wind item in the drift model of the spilled oil is emphasized and the drift model is improved. The understanding of the relativity of the wind velocity is implemented throughout the theoretical analysis process. The balance equation for the spilled oil tracking buoy to track the oil spills is constituted at last.


Shipping is the main way of oil transportation. The frequency of oil spills is so high that the threat of oil spills to marine environment should not be neglected. Tracking the spilled oil accurately is the key to reduce the damage. It is important that accurate information about the location, velocity and direction of oil spill is obtained by advanced oil spills detecting and tracking equipment. Compared with other methods, using drifting buoys to track oil spills is more accurate, real-time and low-cost. In recent years, the selection and data transmission of spilled oil tracking buoy are discussed (Yang Yuewen and Shang Hongmei, 2007; Wang Yu, Xiong Deqi, 2007); A spilled oil tracking autonomous buoy system was completed (Senga Hidetaka, Kato Naomi, Ma Rong, Ito Asuka, Miyagawa Tomoyuki, Yoshie Muneo, Fujita Isamu and Omori Hideyuki, 2006) and some field experiment are carried out(Senga Hidetaka, Kato Naomi, Niou Hiroki, Hiratsuka Masahiro, Takagi Satoshi,2009). The hydrodynamic analysis on the oil spill buoy is studied in literatures (Yue Chengye, Cao Zude, 2003; Ages A B, Boom de Lange B R, Woodward M J.1994).Research on oil spills models in the world have been carried out over 40 years and some progress is made recently(Li Zhiwei, Christopher T M, Zhang Shushen,2000; Fingas M F, Hollerbone B P, 2003).

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