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基于Argo数据的吕宋海峡东部海域的会聚区特征分析

阮海林 杨燕明 牛富强 文洪涛

阮海林, 杨燕明, 牛富强, 文洪涛. 基于Argo数据的吕宋海峡东部海域的会聚区特征分析[J]. 海洋学报, 2015, 37(7): 78-84.
引用本文: 阮海林, 杨燕明, 牛富强, 文洪涛. 基于Argo数据的吕宋海峡东部海域的会聚区特征分析[J]. 海洋学报, 2015, 37(7): 78-84.
Ruan Hailin, Yang Yanming, Niu Fuqiang, Wen Hongtao. Analysis the characteristics of convergence zone in the east of Luzon Strait based on Argo data[J]. Haiyang Xuebao, 2015, 37(7): 78-84.
Citation: Ruan Hailin, Yang Yanming, Niu Fuqiang, Wen Hongtao. Analysis the characteristics of convergence zone in the east of Luzon Strait based on Argo data[J]. Haiyang Xuebao, 2015, 37(7): 78-84.

基于Argo数据的吕宋海峡东部海域的会聚区特征分析

基金项目: 国家海洋局第三海洋研究所基本科研业务费专项资助项目(海三科2011008,海三科2014018).

Analysis the characteristics of convergence zone in the east of Luzon Strait based on Argo data

  • 摘要: 利用2010-2013年的Argo浮标观测资料,对吕宋海峡东部海域(19°~23°N,123~127°E)的会聚区特征进行综合分析.研究结果如下:(1)吕宋海峡东部海域4个季节表面的声速从大至小依次为夏季、秋季、春季和冬季,夏季最大为1 543.5 m/s,冬季最小为1 533.4 m/s;混合层深度从大到小依次为冬季、秋季、春季和夏季;(2)采用WOA13气候态数据对声速剖面进行深海延拓,获得全海深的声速剖面,分析4个季节的声道特征.声道轴深度和声速较为稳定,声道轴深度在1 000~1 040 m之间,声道轴处的声速为1 482 m/s,4个季节的平均声道厚度都超过4 500 m,利于会聚区形成;(3)研究区较易发生会聚现象,发生会聚现象概率高于50%的占70.6%;会聚现象的发生概率季节变化明显,春季、冬季极易发生声场的会聚现象,夏季最小;(4)运用RAMGeo声场模型对研究区4个季节的声传播损失进行仿真,分析会聚区的季节变化特征.当声源深度100 m,接收深度10 m时,第一会聚区,离声源的距离在61~64 km左右,夏季离声源最近,春、冬季较远;会聚区宽度上,夏季最宽为10 km,春季最窄为4.6 km;会聚区增益分布特点与会聚区宽度刚好相反,春季最大为14.6 dB,夏季最小为8.5 dB.
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出版历程
  • 收稿日期:  2014-10-08
  • 修回日期:  2015-03-15

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