LAPIS: Development of a Large Area Plankton Imaging System

LAPIS：大面积浮游生物成像系统的开发

• 批准号: 0118444
• 负责人: Laurence Madin
• 金额: $ 49.98万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-01-01 至 2005-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0118444&HistoricalAwards=false
• 关键词: LAPIS; Development; Large; Area; Plankton

This proposal requests support for the design, construction and testing of a towed video instrument for surveying and identifying macrozooplankton and micronekton in the water column. Called the Large Area Plankton Imaging System (LAPIS), the device would fill a scale gap between existing optical instruments designed for small particles and zooplankton, such as the Video Plankton Recorder, and acoustic systems that have a greater range but currently lack the resolution to identify different taxa of organisms. We intend to build a device that would illuminate and image objects ranging from 0.5 to 100 cm in size, within a field of view ranging from 2 to 4 m2. Towed at 1-2 knots, LAPIS would survey volumes of water approaching those filtered by Midwater trawls. Power, operational data and video signals would be transmitted between the surface and LAPIS via standard electro-optical cable.The instrument would use an array of high efficiency LEDs to create a field of intense red light, imaged by a high resolution (4 Mpixel) digital camera operating at 8 frames s-1. Red light is invisible to most marine organisms, and together with a hydrodynamically quiet profile, will render the instrument inconspicuous to target organisms. We will take advantage of several technologies that are either existent or in development by other groups at WHOI, including the control and data telemetry electronics built for the SeaSoar, and the video processing and Telemetry being developed for the next generation Video Plankton Recorder. Existing winches, wire and slip rings are WHOI will be available for evaluation and use of LAPIS. We believe this device will fill an important niche in optical survey instruments, allowing rapid and extensive quantification of larger organisms, including gelatinous plankton, larger crustaceans and midwater fishes. Although proposed now as a towed instrument, the basic configuration could be adapted for use on ROVs, packaged with acoustics instruments, or on profiling or fixed moorings. Expected applications in the near future include survey of salp swarms, of gelatinous predators in the Gulf of Maine, and future midwater exploration and quantification in connection with the Census of Marine Life.

该提案要求支持设计、建造和测试一个拖曳式视频仪器，以调查和识别水柱中的大型浮游动物和微型浮游生物。该设备被称为大面积浮游生物成像系统（LAPIS），将填补现有光学仪器之间的规模差距，这些光学仪器是为小颗粒和浮游动物设计的，例如视频浮游生物记录仪，而声学系统具有更大的范围，但目前缺乏识别不同生物分类群的分辨率。我们打算建立一个设备，将照明和图像的对象范围从0.5至100厘米的大小，在一个视野范围从2至4平方米。LAPIS以1-2节的速度拖曳，将调查接近中层拖网过滤的水量。地面和LAPIS之间将通过标准的光电电缆传输电力、操作数据和视频信号。该仪器将使用一组高效率的LED来产生一个强烈的红光场，由一个高分辨率（4 Mpixel）的数字相机以8帧/秒的速度成像。红光对大多数海洋生物来说是不可见的，再加上流体动力学上的安静特性，将使仪器对目标生物不显眼。我们将利用WHOI其他小组现有或正在开发的几项技术，包括为SeaSoar建造的控制和数据遥测电子设备，以及为下一代视频浮游生物记录仪开发的视频处理和遥测技术。WHOI将提供现有的绞车、钢丝和滑环，用于LAPIS的评估和使用。我们相信，这一设备将填补光学勘测仪器的一个重要空白，使大型生物，包括凝胶状浮游生物、大型甲壳类动物和中层鱼类能够快速和广泛地量化。虽然现在建议作为拖曳式仪器，但其基本配置可适用于ROV，与声学仪器一起包装，或用于剖面或固定系泊。在不久的将来，预期的应用包括调查salp群，在缅因州海湾的胶状捕食者，以及未来的中层水勘探和量化与海洋生物普查。