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MIDOC: An improved open and closing net system for stratified sampling of mid-water biota

机译：MIDOC：用于中水生物田的分层采样的改进的开放式净净系统

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In support of ecosystem and fisheries studies the CSIRO has deployed a variety of towed and tethered systems to collect quantitative data to understand the distribution and makeup of mid-water biota. A series of platforms have been developed at the CSIRO which incorporate both imaging and acoustics to augment the physical samples. Although these systems provide high fidelity data, they often require specialised technical staff to operate, which limits their use on commercial vessels and vessels of opportunity where it is impractical and/or too costly to dedicate staff to their use. As such it was necessary to develop a self-contained system which could collect stratified physical samples and be deployed in a flexible manner from a variety of vessels with minimal to no technical supervision. A self-contained MIDwater Open and Closing net system (MIDOC) was developed with the ability to conduct self-contained sample collection via pre-programmed sequence or via direct vessel command using acoustic link or electrical connection. The system is designed to be flexible and can be towed with a single wire from the stern of a ship, incorporated as a cod end in a larger commercial net system, or dropped vertically to profile the water column. This paper will discuss the design, development and testing of an open and closing net system for midwater sample collection. Finally, the paper discusses the next phases of development for the system.
机译：为了支持生态系统和渔业研究，CSIRO部署了各种牵引和系绳系统，以收集定量数据以了解中水生物群的分布和化妆。 CSIRO开发了一系列平台，该平台包括成像和声学来增加物理样本。虽然这些系统提供了高保真数据，但它们通常需要专门的技术人员来运作，这限制了他们对商业船只和机会船只的使用，在那里献上员工的机会是不切实际和/或太昂贵的员工。因此，有必要开发一种自含有的系统，该系统可以收集分层的物理样品，并以灵活的方式从各种血管部署，以最小的无技术监督。通过预先编程的序列或通过使用声学链路或电气连接通过直接船只命令进行自包含样品收集的能力，开发了一种独立的跨界净系统（MINOC）。该系统设计为柔性，可以用船船尾的单线牵引，作为鳕鱼结束，在较大的商业净系统中，或垂直落在水柱上。本文将讨论用于跨水样本收集的开放式净系统的设计，开发和测试。最后，本文讨论了系统开发的下一阶段。

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