第二岛链以东附近海域冬季水文要素特征分析

张胜军; 高飞

doi:10.3969/j.issn.1001-909X.2015.04.006

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海洋学研究 ›› 2015, Vol. 33 ›› Issue (4) : 53-60. DOI: 10.3969/j.issn.1001-909X.2015.04.006

研究论文

第二岛链以东附近海域冬季水文要素特征分析

张胜军¹, 高飞²

作者信息 +

Analysis on the characteristics of hydrological elements in the easterly ocean nearby the second island chain in winter

ZHANG Sheng-jun¹, GAO Fei²

Author information +

文章历史 +

摘要

利用西太平洋冬季海洋综合调查获取的数据资料,分析了第二岛链以东附近海域冬季温度、盐度、声速和密度的分布特征和变化规律。使用Ocean Data View海洋数据软件对资料进行网格化处理,同时采用Wilson方法和垂直梯度法计算声速和声速梯度。分析数据结果表明:第二岛链以东附近海域冬季温度随深度增加而减小,且750 m以浅变化幅度较大;而盐度和声速的垂直结构特征均表现为从表层向下先减小后增大,但各自存在不同的临界深度。海区存在温度和声速双跃层结构,上跃层强度大,厚度小;下跃层强度较小,厚度较大。

Abstract

Based on the conductivity-temperature-depth (CTD) data from the compositive survey in the westen Pacific, the distribution characteristics and change regularity of the temperature, salinity, speed of sound and density in the easterly ocean nearby the second island chain in winter have been analysed. Data were processed with average gridding methods by using a software named Ocean Data View (ODV), and the speed of sound and sound velocity gradient were obtained with the speed calculation method of Wilson and vertical gradient methods. Comprehensive analytic results indicate: the temperature are decrease as the depth increase, and the rate of change is obvious above 750 meters; however, the characteristics of vertical structure of salinity and speed of sound values are decrease first, and then increase downward from surface layer, which have different critical depth. There are two thermoclines in the sea area, the upper one is stronger and thinner than the under one.

导出引用

张胜军, 高飞. 第二岛链以东附近海域冬季水文要素特征分析[J]. 海洋学研究. 2015, 33(4): 53-60 https://doi.org/10.3969/j.issn.1001-909X.2015.04.006

ZHANG Sheng-jun, GAO Fei. Analysis on the characteristics of hydrological elements in the easterly ocean nearby the second island chain in winter[J]. Journal of Marine Sciences. 2015, 33(4): 53-60 https://doi.org/10.3969/j.issn.1001-909X.2015.04.006

中图分类号： P731.1

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