Developing a Pumping System That Can Rapidly Obtain Continuous Chemical Profiles to Depths of ~600 m

这个海洋科学仪器开发项目包括建造一个海上抽水系统，以获得600米深处营养物质和溶解气体的连续垂直剖面。该系统基于一个成功的原型，该原型使用了一个相对较小直径的软管和一个底部安装的叶片泵。对系统流动特性的测试表明，混合产生的信号模糊最小，并且在获取溶解气体样品方面优于水样瓶。要完成的系统改进包括制造一个组合电缆，该电缆包括软管、电力线、数据传输线和一个强度构件。还将对牵引绞车进行改装，以处理特殊电缆。还将开展开发特殊比色溶解氧和硫化氢分析方法的工作，以便更好地在缺氧/缺氧界面及其附近收集连续数据。在计划于明年进行的黑海考察中，该泵送系统将特别有用。

This ocean sciences instrumentation development project involves constructing a seagoing pumping system to obtain continuous vertical profiles of nutrients and dissolved gases to depths of 600 meters. The system is based on a successful prototype that uses a relatively small diameter hose and a bottom-mounted vane pump. Tests on the system's flow characteristics indicate that there is minimal signal smearing from mixing and the performance is thought to be superior to water sampling bottles for obtaining dissolved gas samples. System improvements to be completed involve fabrication of a combined cable to encompass the hose, power line, data transmission line, and a strength-member. Modifications to a traction winch to handle the special cable will also be undertaken. Work will also be undertaken to develop special colorimetric dissolved oxygen and hydrogen sulfide analysis methods to better enable the collection of continuous data in and near oxic/anoxic interfaces. The pumping system will be especially useful on an expedition to the Black Sea scheduled in the next year.