Collaborative Research: Facility Support: Center for Transformative Environmental Monitoring Programs: Fiber-optic Distributed Sensing

合作研究：设施支持：变革性环境监测项目中心：光纤分布式传感

• 批准号: 1129003
• 负责人: John Selker
• 金额: $ 51.17万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2015-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1129003&HistoricalAwards=false
• 关键词: Collaborative; Research; Facility; Support; Center

1129003SelkerThis collaborative grant between Oregon State University (PI: Selker) and the University of Nevada Reno (PI: Tyler; EAR-1128999), supports a three year continuation and enhancement of national multi-user facility support for the Center for Transformative Environmental Monitoring Programs (CTEMPs). CTEMPs was established in 2009 with initial support through the American Recovery and Reinvestment Act (ARRA; EAR-0943682). CTEMPs offers community support for planning, training, equipment lease and field implementation using distributed fiber optic methods including Raman backscatter Distributed Temperature Sensing (DTS) to allow for unprecedented observation of the spatial and temporal distribution of temperature for environmental applications including but not limited to, snow, groundwater and watershed hydrology, aquatic and terrestrial ecology, karst geology, soil science (including permafrost studies), atmospheric boundary layer turbulence and glaciology. Data collected using the CTEMPs DTS systems will be integrated into the CUAHSI Hydrologic Information System (HIS) and CTEMPs will become a Hydrologic Measurement Facility (HMF) Node of CUAHSI. CTEMPs plans training workshops and field deployment for up to 26 research projects a year with this support. CTEMPs currently maintains five DTS system, one of which is high resolution, and 27 km of fiber optic cable. High resolution DTS systems allow for near continuous (0.25 m) and precise (+/- 0.3 deg C) observations of river bottom, lake, or estuary bottom, snow pack, soil horizon or atmospheric temperatures over distances as great at 8 km at high temporal frequency (1 Hz). Temperature precision of +/ 0.01 deg C can be achieved when observation are sampled hourly. When placed in a stream or river, fiber optic DTS allows for observation of the location, temperature, and flux of each groundwater inflow, calculation of an exact heat budget to determine hyporheic exchange, and observation of micro-thermal habitats critical to successful larval fish recruitment. DTS systems were originally developed for applications in the oil industry and for fire detection in high rise buildings. Support for CTEMPs will make this developing technology available to broader scientific community for marginal instrument lease costs and applications for instrument use will be prioritized by an advisory committee with external representation.***

1129003Selker 俄勒冈州立大学（PI：Selker）和内华达大学里诺分校（PI：Tyler；EAR-1128999）之间的这项合作赠款，支持对转型环境监测计划中心的国家多用户设施支持的三年延续和加强（CTEMP）。 CTEMPs 成立于 2009 年，最初得到《美国复苏和再投资法案》(ARRA；EAR-0943682) 的支持。 CTEMP 使用分布式光纤方法（包括拉曼反向散射分布式温度传感 (DTS)）为规划、培训、设备租赁和现场实施提供社区支持，以便对环境应用中的温度空间和时间分布进行前所未有的观察，包括但不限于：雪、地下水和流域水文学、水生和陆地生态学、岩溶地质学、土壤科学（包括永久冻土研究）、大气边界层湍流和冰川学。 使用 CTEMP DTS 系统收集的数据将集成到 CUAHSI 水文信息系统 (HIS) 中，CTEMP 将成为 CUAHSI 的水文测量设施 (HMF) 节点。 在此支持下，CTEMP 每年计划为多达 26 个研究项目举办培训研讨会和现场部署。 CTEMPs目前维护着五个DTS系统，其中一个是高分辨率的，以及27公里的光缆。 高分辨率 DTS 系统可对河底、湖泊或河口底部、积雪、土壤水平或大气温度进行近乎连续 (0.25 m) 和精确 (+/- 0.3 ℃) 的观测，最高距离可达 8 公里时间频率（1 Hz）。 每小时采样一次观测，温度精度可达到±0.01℃。 当放置在溪流或河流中时，光纤 DTS 可以观察每个地下水流入的位置、温度和通量，计算精确的热预算以确定潜流交换，并观察对幼鱼成功至关重要的微热栖息地招聘。 DTS 系统最初是为石油工业的应用和高层建筑的火灾探测而开发的。 对 CTEMP 的支持将使更广泛的科学界能够以边际仪器租赁成本使用这一正在开发的技术，并且具有外部代表的咨询委员会将优先考虑仪器使用的应用。***