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引用本文:张书文.黄海冷水团夏季叶绿素垂向分布结构的影响机制.海洋与湖沼,2003,34(2):179-186.
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黄海冷水团夏季叶绿素垂向分布结构的影响机制
张书文
海洋环境科学和数值模拟国家海洋局重点实验室
摘要:
通过求解黄海冷水团叶绿素一维模式控制方程,首次对风搅拌混合、潮混合和光衰减强度的影响机制进行了解析研究。结果表明,湍流混合过程和光的衰减强度对叶绿素夏季垂向分布结构具有重要影响。增强海面风搅拌混合作用的结果,导致叶绿素表层分布趋于均匀;增强潮混合,导致叶绿素最大值增加,最大值的位置向海面抬升;减少光的衰减强度,导致叶绿素最大值增加,最大值的位置下沉。
关键词:  黄海冷水团,叶绿素,影响机制
DOI:10.11693/hyhz200302008008
分类号:
基金项目:国家973基础规划资助项目,G1999043802号、国家863项目资助课题编号:2002AA633100
EFFECT MECHANISMS ON CHLOROPHYLL-A VERTICAL DISTRIBUTION IN THE SUMMER WITHIN YELLOW SEA COLD WATER MASS
ZHANG Shu-Wen
Department of Physical Oceanography, the Key Laboratory of Marine Science and Numerical Modelling, State Oceanic Administration, First Institute of Oceanography
Abstract:
This paper deals with the effect mechanisms on chlorophyll-a vertical distribution during the summer months. The relative importance of various environmental factors such as light, stratified waters and turbulence mixing process are discussed in this paper.The degree of vertical turbulent mixing, which largely determines the inorganic nutrients for phytoplankton growth, can be defined in terms of wind and tide. The theoretical approach indicates that when the wind increased, the homogeneous layer of chlorophyll-a in the upper seawaters will be increased. While when the tidal mixing becomes stronger, the maximum value of chlorophyll-a will be increased and the maximum position will be shoaled. The light, on the other way, is the more effective factor on chlorophyll-a vertical distribution. When the extinction coefficient increase, the maximum value of chlorophyll-a will be decreased and the maximum position will be also shoaled.
Key words:  Yellow Sea Cold Water Mass, Chlorophyll-a, Effect mechanism
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