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PHYSICAL OCEANOGRAPHY

机译:物理海洋学

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摘要

This paper describes a near-surface ocean profiler, which has been designed to precisely measure vertical gradients in the top 10m of the ocean. Variations in the depth of seawater collection are minimized when using the profiler compared to conventional CTD/rosette deployments. The profiler consists of a remotely operated winch mounted on a tethered yet free-floating buoy, which is used to raise and lower a small frame housing sensors and inlet tubing. Seawater at the inlet depth is pumped back to the ship for analysis. The profiler can be used to make continuous vertical profiles or to target a series of discrete depths. The profiler has been successfully deployed during wind speeds up to 10ms~1 and significant wave heights up to 2 m. We demonstrate the potential of the profiler by presenting measured vertical profiles of the trace gases carbon dioxide and dimethylsulfide. Trace gas measurements use an efficient microporous membrane equilibrator to minimize the system response time. The example profiles show vertical gradients in the upper 5m for temperature, carbon dioxide and dimethylsulfide of 0.15 ℃, 4 μatm and 0.4nM respectively.
机译:本文介绍了一种近地表海洋剖面仪,该剖面仪旨在精确测量海洋顶部10m处的垂直梯度。与常规的CTD /玫瑰花结相比,使用探查器时,海水收集深度的变化最小。探查器由安装在系留但自由浮动的浮标上的遥控绞车组成,该浮标用于升高和降低容纳传感器和进气管的小框架。入口深度的海水被抽回到船上进行分析。轮廓仪可用于制作连续的垂直轮廓或瞄准一系列离散的深度。在风速高达10ms〜1且波高高达2 m时,探查器已成功部署。我们通过介绍痕量气体二氧化碳和二甲基硫的垂直剖面图来证明剖面仪的潜力。痕量气体测量使用高效的微孔膜平衡器来最小化系统响应时间。示例剖面显示温度为5m时上部的垂直梯度,二氧化碳为0.15℃,二甲基硫为4μatm,二甲基硫为0.4nM。

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  • 来源
    《Oceanographic Literature Review》 |2017年第11期|2307-2324|共18页
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