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

俄勒冈州立大学（PI: Selker）和内华达大学里诺分校（PI: Tyler; EAR-1128999）之间的合作拨款，支持为期三年的国家多用户设施支持，以支持变革环境监测项目中心（CTEMPs）。CTEMPs于2009年成立，最初得到了《美国复苏与再投资法案》（ARRA; EAR-0943682）的支持。CTEMPs为规划、培训、设备租赁和现场实施提供社区支持，使用包括拉曼反向散射分布式温度传感（DTS）在内的分布式光纤方法，允许对环境应用的温度时空分布进行前所未有的观测，包括但不限于雪、地下水和流域水文学、水生和陆地生态学、喀斯特地质、土壤科学（包括永久冻土研究）。大气边界层湍流与冰川学。使用CTEMPs DTS系统收集的数据将集成到中国科学院水文信息系统（HIS）中，CTEMPs将成为中国科学院的水文测量设施（HMF）节点。CTEMPs计划在这种支持下每年为多达26个研究项目举办培训讲习班和实地部署。CTEMPs目前维护着5个DTS系统，其中一个是高分辨率的，以及27公里的光纤电缆。高分辨率DTS系统允许近连续（0.25米）和精确（+/- 0.3℃）观察河底，湖泊或河口底部，积雪，土壤水平或大气温度，在高时间频率（1hz）下，距离可达8公里。每小时采样一次，温度精度可达+/ 0.01℃。当放置在溪流或河流中时，光纤DTS可以观察每次地下水流入的位置、温度和通量，计算精确的热量收支以确定潜热交换，并观察对成功捕获幼虫至关重要的微热栖息地。DTS系统最初是为石油工业和高层建筑的火灾探测应用而开发的。对CTEMPs的支持将使这项发展中的技术以边际仪器租赁成本向更广泛的科学界提供，仪器使用的应用将由一个有外部代表的咨询委员会优先考虑

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.***