复合指数模型及其在海流测量中的应用  

Complex Exponential Distribution Model and Its Application in Current Measurement

作　　者：周冲 任少华 林楠 唐东跃 

机构地区：[1]浙江省河海测绘院水文分院,浙江杭州310008

出　　处：《人民黄河》2014年第4期26-28,共3页Yellow River

基　　金：国家自然科学基金资助项目(51109188);水利部公益性行业科研专项(201001072);浙江省河海测绘院院长基金资助项目(CHJJ-20131114)

摘　　要：对海流分层流速数据进行分析,提出了复合指数模型,并将该模型与常见的几个海流垂向分布模型作了适用性比较。复合指数模型参数多,线型灵活,对不同海域、不同水深垂向海流流速分布适用性较好。二次函数法适用于海水较浅的海域。扩展后的对数线性模型适用范围较小,对垂向流速拟合效果较差。在实际应用中,应结合ADCP,把海流垂向分布模型运用到海流流速的测量处理当中。The current velocity distributions in vertical were compared with the data of current velocity in layer. A complex exponential distribution model was suggested. This complex exponential distribution model has five parameters. And the line is flexible. It is suitable for the current velocity in vertical. Quadratic function is suit for the current velocity in the area with shallow waters. Extended log-linear model is suit for the current veloci- ty in the area with deep waters sometimes, not shallow waters. Combining with ADCP we used the models in inferring current velocity.

关 键 词：海流流速 垂向分布 复合指数模型 声学多普勒流速剖面仪 

分 类 号：P332[天文地球—水文科学]