Distributed Temperature Sensing (DTS)

DTS technologies use fiber optic cables to precisely measure temperature, strain, or vibration at many locations continuously through time.

For example, temperature monitoring within sediment reveals water movement and allows quantifying groundwater emergences across large areas.  Because it is continuous, changes associated with tides, precipitation, pumping, and seasonal climate differences may be observed.  SelkerMetrics can also use this to measure sediment deposition and scouring continuously over large areas and durations.

Other examples include tracking water and fluid movement in soils, through man-made caps, and in other geotechnical applications where contaminant flows are of interest.  For example, SelkerMetrics has installed patented cable technology in wells to detect water movement within and near well, and can detect leaks in infrastructure such as sheet piling, landfill liners, and other barriers.

DTS technology can also be applied in situations involving temperature monitoring in air or liquids, and can be used to monitor vibration, sound, and strain over long distances and across large areas through time.

Introductory Articles

Selker, J.S., Fiber Optics for Environmental Sensing. Sensors (May 2008)
A Distributed Temperature Primer for Oil and Gas Production Presented by Shell (2003)
Sherman, L., Wired Watershed, Oregon State Terra Magazine (2009)