| 近海海面油类漂流扩散的研究和预测实践 |
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| 引用本文： | 张和庆,李福娇.近海海面油类漂流扩散的研究和预测实践[J].热带气象学报,2001,17(1):83-89. |
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| 作者姓名： | 张和庆 李福娇 |
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| 作者单位： | 1. 国家海洋局南海分局,
2. 广州热带海洋气象研究所, |
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| 摘 要： | 根据珠江口气象站风速与潮汐站潮位资料，对1955－1998年12次El Nino过程的珠江口季风强度与海平面变化特点进行合成分析，结果表明，El Nino发生前一年冬季，珠江口冬季平均风速较常年值大0．4m/s,El Nino发生当年，月平均风速也普遍大于常年，而月平均海平面则普遍较常年偏低，其中10与11月份负距平为6cm左右。东亚地区的季风异常对珠江口海平面异常有着重大的影响。
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| 关 键 词： | 季风强度 海平面异常 厄尔尼诺 季风指数 |
| 文章编号： | 1004-4965（2001）01-0077-06 |
| 收稿时间： | 1999/12/21 0:00:00 |
| 修稿时间： | 1999年12月14 |
STUDY AND PRACTICE OF THE OIL DRIFT AND DIFFUSION ON THE SEA SURFACE IN THE OFFSHORE |
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| ZHANG He-qing and LI Fu-jiao.STUDY AND PRACTICE OF THE OIL DRIFT AND DIFFUSION ON THE SEA SURFACE IN THE OFFSHORE[J].Journal of Tropical Meteorology,2001,17(1):83-89. |
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| Authors: | ZHANG He-qing and LI Fu-jiao |
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| Institution: | South China Sea Branch, State Oceanic Administration, Guangzhou 510300, China;Guangzhou Inst. of Tropical Ocean Meteorology, Guangzhou 510080, China |
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| Abstract: | According to the test results of the drift and diffusion of the oil conducted on the ocean,this paper analyses the drift and diffusion process of the oils into the ocean and considers:(1) the drift speed and direction of surface oils are decided by the speed and direction of the wind and surface current;the oil drift speed and direction accord basically with U0=Uc+ξW andD=Ccurrent+r;(2) the diffusion form of surface oils has relation to the drift speed of oil,that is the faster the drift speed of oils is,the oils diffusion speed and time can be expressed with Udiffusion=at-b,that is the faster the drift speed of oils is,the longer and narrower the form of oils,and conversely,the wider and shorter;(3) the results of two practical examples test during shipwreck oil spill are close to the study result;(4) satisfactory forecast of oil spill drift was obtained by application of the above to oil pipeline broken in Huizhou 26-1 offshore oil field in 1996. |
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| Keywords: | offshore oil drift and diffusion study |
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