| 加里曼丹岛西北侧低盐水季节变化及机理分析 |
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| 引用本文： | 谢华伟.加里曼丹岛西北侧低盐水季节变化及机理分析[J].海洋学研究,2011,29(2):1-11. |
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| 作者姓名： | 谢华伟 |
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| 作者单位： | 浙江水利水电专科学校,浙江,杭州,310018;国家海洋局第二海洋研究所,卫星海洋环境动力学国家重点实验室,浙江,杭州,310012 |
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| 基金项目： | 海岸灾害及防护教育部重点实验室开放研究基金资助项目，浙江水利水电专科学校校级科研课题资助项目 |
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| 摘 要： | 利用LEVITUS温盐资料、HOAPS降水及蒸发资料以及OFES模式资料等分析加里曼丹岛西北侧表层低盐水的季节变化规律,并使用盐度平衡模式诊断了海面淡水通量、径流、卷挟作用以及平流作用对低盐水变化的贡献.分析表明:加里曼丹西北侧全年均存在1个低盐水团,其季节变化具有"双峰"特征,3月至4月以及10月至11月会发生2次低...
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| 关 键 词： | 表层低盐水 盐度平衡公式 海面淡水通量 平流 风场 加里曼丹岛 |
Analysis of the seasonal variations and their mechanism of the low-salinity water to the northwest side of Kalimantan Island |
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| XIE Hua-wei.Analysis of the seasonal variations and their mechanism of the low-salinity water to the northwest side of Kalimantan Island[J].Journal of Marine Sciences,2011,29(2):1-11. |
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| Authors: | XIE Hua-wei |
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| Institution: | XIE Hua-wei 1,2(1.Zhejiang Water Conservancy and Hydropower College,Hangzhou 310018,China;2.State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,SOA,Hangzhou 310012,China) |
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| Abstract: | Using LEVITUS temperature and salinity data,HOAPS precipitation and evaporation data and OFES model data,the seasonal variation characteristics of the low-salinity water to the northwest side of Kalimantan Island are analyzed,and the change mechanism is discussed.A salinity balance model is used for diagnosing the contribution of sea surface freshwater flux,runoff,and entrainment and advection actions to the variations.The results show that there is a low-salinity water mass all the year round and its seasonal variation has "double apices" feature.The minimum values appear from March to April and from October to November,and the center of the low-salinity water is located near the Rajang river estuary at the northwest of the island.However,the sea surface freshwater flux does not show "double apices" pattern,which indicates that the seasonal changes of the low-salinity water are not controlled by the sea water flux solely.Meanwhile,after adding the runoff of land,it is found that the runoff would increase obviously in winter,this fits the forming conditions of the winter low-salinity water,but this does not happen from March to April,which provides evidence to the statement that the low-salinity water is not controlled by the fresh water flux,but by advection in this period.The increase of freshwater flux is the main effect for the formation of the low-salinity water from October to December.Analysis also shows that the wind field can change the flow field and further result in great impacts on the variation of salinity,which is the main driving force for the seasonal variation of salinity in this area. |
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| Keywords: | surface low-salinity water salinity budget formula sea surface freshwater flux advection wind field Kalimantan Island |
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