An Inexpensive Vertically Profiling Float for Seasonal-High-Resolution Measurements in P-BECS

P.I. Pinkel, Robert （SIO）提案#:0242187提案标题：用于p - becs季节性高分辨率测量的廉价垂直剖面浮子项目摘要：PI建议开发一种廉价的垂直剖面浮子，从海洋表面波场获取能量。该系统被命名为“Wirewalker”，它是一个能够支持各种独立仪器的通用平台。波浪的运动使正浮力剖面仪向下运动。然后它自由向上漂浮，与表面运动场分离。设计的重点是机械简单和低成本。在中等海况下，Wirewalker原型机每15分钟完成60米深度剖面。测试部署表明，从地面到50-100米的剖面可以足够快地获得，从而可以解决低频和高频变化。自由漂移和系留应用都是可能的。在测试过程中，在三周的时间内，将分析器固定在Scripps码头的末端，获得了超过6000条剖面的记录。这里提出的工作将有助于改进和扩展Wirewalker的设计，以生产一个可以被更广泛的海洋学社区使用的分析器。特别是，将构建一个通用的分析平台，能够处理任何中等重量（20公斤）的内部记录仪器。PI表示，这种设备的商业价格可能低于1000美元。此外，将开发具有GPS导航和远程数据遥测的ctd光学剖面仪。这种遥测技术可以实现实时数据收集和消耗性部署。此外，PI建议购买市售的点速度传感器用于剖面仪。这将使人们能够获得有关测量近地表速度问题的初步经验。PI建议，Wirewalker的最初科学应用是在P-BECS，在那里有文件证明需要建立快速波动的横向和垂直通量的长期平均值。一个特定的目标是与低纬度地表水的下午加热及其随后的风平流有关的侧向热通量。根据设想，wirewalker将单独部署或以小型阵列部署，以解决特定的科学问题。如果成功，Wirewalker系统可以显著延长监测阵列的深度时间分辨率，也可以增加过程实验的持续时间和空间覆盖。

P.I. Pinkel, Robert (SIO) Proposal #: 0242187Proposal Title: An Inexpensive Vertically Profiling Float for Seasonal-High-Resolution Measurements in P-BECSProject Summary The PI proposes to develop an inexpensive vertically profiling float that draws its energy from the ocean surface wavefield. This system has been named the "Wirewalker" and it is a generalized platform capable of supporting a variety of self-contained instruments. The motion of the waves drives the positively buoyant profiler downward. It then free floats upward, decoupled from the surface motion field. The design focuses on mechanical simplicity and low cost. In moderate sea states, a prototype Wirewalker has completed profiles to depths of 60 m every 15 min. Test deployments have shown that profiles from the surface to 50-100 m can be obtained rapidly enough that diel and higher-frequency variability can be resolved. Both free-drifting and tethered applications are possible. During testing a record with greater than 6000 profiles was obtained over a three-week period with the profiler tethered at the end of the Scripps Pier. The work proposed here will help refine and extend the Wirewalker design to produce a profiler that could be used by the broader oceanographic community. In particular, a general purpose profiling platform capable of handling any internally recording instrument of modest weight (20 kg) will be constructed. The PI states that the commercial price for such a device would likely be less than $1000. In addition, a CTD-optical profiler with GPS navigation and remote data telemetry will be developed. This telemetry would enable real-time data collection and expendable deployments. In addition, the PI proposed to purchase a commercially available point velocity sensor for use on the profiler. This will enable initial experience with the problem of measuring near-surface velocity to be gained. The PI proposes that the initial science application for the Wirewalker is in P-BECS, where there is a documented need to establish the long-term averages of rapidly fluctuating lateral and vertical fluxes. A specific target is the lateral heat flux associated with the afternoon heating of low latitude surface waters and its subsequent advection by the wind. It is envisioned that the Wirewalkers will be deployed individually or in small arrays to address specific science issues. If successful, the Wirewalker system could significantly extend the depth-time resolution of monitoring arrays and could also increase the duration and spatial coverage of process experiments.