distributed fiber-optic sensing Articles

  • Assessment of detection limits of fiber-optic distributed temperature sensing for detection of illicit connections

    Distributed temperature sensing (DTS) with fiber-optic cables is a powerful tool to detect illicit connections in storm sewer systems. High-frequency temperature measurements along the in-sewer cable create a detailed representation of temperature anomalies due to illicit discharges. The detection limits of the monitoring equipment itself are well-known, but there is little information available ...


    By IWA Publishing

  • Searching for storm water inflows in foul sewers using fibre-optic distributed temperature sensing

    A major drawback of separate sewer systems is the occurrence of illicit connections: unintended sewer cross-connections that connect foul water outlets from residential or industrial premises to the storm water system and/or storm water outlets to the foul sewer system. The amount of unwanted storm water in foul sewer systems can be significant, resulting in a number of detrimental effects on ...


    By IWA Publishing

  • Map Algal Blooms with Satellite Remote Sensing Technology

    The quality of water bodies is a key determinant in the usability of the resource for the purpose required. It is therefore of great importance to managers of hydrologic resources to be able to confidently tell the status of their water resource. One of the major problems in the quality of surface water bodies is the blooming of algae and blue green algae. Algal blooms can result in ecological, ...


    By LG Sonic

  • Distributed Thermal-Acoustic Data Integration

    Silixa has developed a technique called Distributed Thermal Acoustics (DTA) to monitor simultaneously the thermal and acoustic profile along a hybrid optical fibre cable in submarine environments. Using its world leading distributed fibre optic technology (ULTIMATM DTS and iDASTM) Silixa deployed an optical fibre cable along the seabed and across the water column in an active gas seepage ...


    By Silixa Ltd

  • Distributed Measurements Unlock the Future of Design

    The next generations of materials and design will require sensing technologies that can monitor beyond the scope of point sensors such as thermocouples and strain gauges. New sensing platforms based on optical fibers can obtain spatially continuous, real time data, giving developers detailed insight across broad areas into how their materials and designs behave. Such systems also can sense ...


    By Sensuron

  • Flow Profiling on Demand – Illuminating the reservoir with Silixa’s intelligent Distributed Acoustic Sensor (iDAS) and ULTIMA Distributed Temperature Sensor (DTS)

    As energy demands increase rapidly, the goal of energy companies is to maximize ultimate recovery in an economically sound manner. One critical capability is the accurate measurement and monitoring of production from individual layers / perforated intervals in a multi-zone completion. This data allows operators to optimize zonal production, improve recovery, increase production per well and ...


    By Silixa Ltd

  • Remote sensing of particulate pollution from space: Have we reached the promised land?

    This paper follows presentation and publication of the Hoff and Christopher 2009 Critical Review and represents an integration of discussants’ views of their paper. The discussants’ comments are organized beginning with a note on the history of satellite sensing, followed with a brief discussion of the strengths and weaknesses of satellite observations relative to air quality management needs. ...

  • Monitoring ecosystem optical properties with the UniSpec-SC

    Understanding patterns of ecosystem properties is important if we are to effectively monitor ecosystem change due to a variety of reasons (e.g. global changes, human management). Remote sensing provides a great tool for monitoring the earth's surface at different temporal and spatial scales. Patterns of vegetation and biodiversity dynamics are important ecosystem properties, with strong links to ...


    By PP Systems

  • Theory, Modeling, and Measurements of Gas Plumes

    Abstract Spectroscopic measurements of infrared CO2 transitions in gas plumes are reported, and evaluated for their potential to yield a reliable remote sensing technique for determination of plume temperature. Measurements were made on two types of plumes: a sideways-directed plume from a vehicle exhaust, and a stack plume from a propane-burning portable plume generator. Modeling of CO2 ...


    By D&P Instruments

  • Combining LiDAR and IKONOS data for eco-hydrological classification of an ombrotrophic peatland

    Received for publication March 11, 2009. Remote sensing techniques have potential for peatland monitoring, but most previous work has focused on spectral approaches that often result in poor discrimination of cover types and neglect structural information. Peatlands contain structural 'microtopes' (e.g., hummocks and hollows) which are linked to hydrology, biodiversity and carbon sequestration, ...

  • Assessing the transport and fate of MTBE

    Untitled Document ...


    By Solinst Canada Ltd.

  • The challenges and benefits of local air quality monitoring

    A new generation of air quality monitors is now being offered to provide localised, real-time air quality readings – but the potential benefit is only just starting to be realised. It is generally accepted that whilst measurements from air quality reference stations are highly accurate, they are not sufficiently location-specific. Key pollutants – such as NO2 and PM2.5 ...


    By AQMesh

  • Problem Solving with InfoNet 5: Managing Surveys

    Untitled Document ...


    By Innovyze

  • Citizens Drive 65 Percent Diversion System

    For better or worse, citizens opposing waste management projects usually end up being labeled as NIMBYs — not in my backyard. This could have been the case in Halifax, Nova Scotia but instead, the citizens took their opposition one step further, basically taking the design for an acceptable waste management system into their own hands. In the process, they laid out the foundation for an ...


    By BioCycle Magazine

  • Cart-Based Organics Collection. Citizens Drive 65 Percent Diversion System

    For better or worse, citizens opposing waste management projects usually end up being labeled as NIMBYs — not in my backyard. This could have been the case in Halifax, Nova Scotia but instead, the citizens took their opposition one step further, basically taking the design for an acceptable waste management system into their own hands. In the process, they laid out the foundation for an ...


    By BioCycle Magazine

  • Harnessing The Power Of Microbes

    University researchers are advancing both the understanding and scalability of a biological process where bacteria living under anaerobic conditions consume organic waste and generate electrons and protons that are tapped for electricity production.IMAGINE a self-sustaining battery that never runs out of juice. While the notion may sound far-fetched, Dr. Leonard Tender at the Naval Research ...


    By BioCycle Magazine

  • Top International News in Chemical Policy and Regulation

    AUSTRALIA Australia Releases Third Consultation Paper Concerning NICNAS Reform: On April 29, 2016, the National Industrial Chemicals Notification and Assessment Scheme (NICNAS) published the third consultation paper on its  ...


    By Acta Group

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