Rapid Sampling of Fluorescence Using Laser/Fiber Optics

俄勒冈州立大学正在进行一个为期30个月的项目，该项目旨在解决生物和化学海洋学中改进海上数据收集技术的需要和要求，这些技术描述了营养物质和生物在空间和时间尺度上的分布，比目前可用的技术许可更有针对性。目前用于测量营养物和叶绿素的细微分布的水样瓶、拖曳装置和抽水系统过于粗糙，不能用精细的物理参数来描述浮游生物的分布。总体计划是开发一个光纤系统来感知和测量叶绿素荧光，并将其与现有的测量微结构和湍流的物理海洋仪器相匹配。该多学科项目将开发一种海上激光/光纤系统，用于进行高频、高空间分辨率(垂直和水平)、现场生物和化学测量。已确定以下具体目标：1)开发远程光纤荧光技术的海洋学应用；2)获得证明该技术的重要性和适用性的科学数据；3)使上层海洋的生物测量尺度和物理测量尺度保持一致；以及4)调查对营养物质浓度进行现场测量的可能方法。部分开发工作将由劳伦斯·利弗莫尔国家实验室以分包合同的形式完成。海军研究办公室和生物海洋学项目也在提供支持。

Oregon State University is undertaking a 30-month project that addresses a need and requirement within biological and chemical oceanography to improve sea-going data gathering technologies that describe the distribution of nutrients and organisms on space and time scales that are better focused than presently available technology permits. Water sampling bottles, towed devices, and pumping systems that are presently used to measure fine-scale distributions of nutrients and chlorophyll are too coarse to describe plankton distribution in terms of fine scale physical parameters. The overall plan is to develop a fiber-optic system to sense and measure chlorophyll fluorescence and mate it to the existing physical oceanographic instrumentation that measures microstructure and turbulence. The multidisciplinary project will develop a sea-going laser/fiber optic system for making high-frequency, high spatial resolution (vertical and horizontal), in-situ biological and chemical measurements. The following specific objectives have been identified: 1) develop an oceanographic application for remote fiber optic fluorescent technology; 2) obtain scientific data that demonstrates the importance and applicability of this technology; 3) obtain coherence between biological and physical measurement scales in the upper ocean; and 4) investigate potential methods for making in-situ measurements of nutrient concentrations. Part of the development work is to be done by the Lawrence Livermore National Laboratory on a sub-contract. The Office of Naval Research and the Biological Oceanography Program are also providing support.