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des Tombe, B.F. (author), Schilperoort, B. (author), Bakker, M. (author)
Distributed temperature sensing (DTS) systems can be used to estimate the temperature along optic fibers of several kilometers at a sub-meter interval. DTS systems function by shooting laser pulses through a fiber and measuring its backscatter intensity at two distinct wavelengths in the Raman spectrum. The scattering-loss coefficients for...
journal article 2020
document
des Tombe, B.F. (author), Bakker, M. (author), Smits, F.J.C. (author), Schaars, Frans (author), van der Made, Kees Jan (author)
An approach is presented to determine groundwater flow in unconsolidated aquifers with a heat pulse response test using a heating cable and a fiber-optic cable. The cables are installed together using direct push so that the cables are in direct contact with the aquifer. The temperature response is measured for multiple days along the fiber...
journal article 2019
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des Tombe, B.F. (author), Bakker, M. (author), Schaars, Frans (author), van der Made, Kees Jan (author)
An approach is presented to determine the seasonal variations in travel time in a bank filtration system using a passive heat tracer test. The temperature in the aquifer varies seasonally because of temperature variations of the infiltrating surface water and at the soil surface. Temperature was measured with distributed temperature sensing...
journal article 2018
document
van Ginkel, M. (author), des Tombe, B.F. (author), Olsthoorn, T.N. (author), Bakker, M. (author)
Regular aquifer storage recovery, ASR, is often not feasible for small-scale storage in brackish or saline aquifers because fresh water floats to the top of the aquifer where it is unrecoverable. Flow barriers that partially penetrate a brackish or saline aquifer prevent a stored volume of fresh water from expanding sideways, thus increasing...
journal article 2016
document
des Tombe, B.F. (author), Bakker, M. (author), Schaars, F (author), van der Made, KJ (author), Calje, R (author), Borst, L. (author)
Targeted provisional session N°8.01 The seasonal variation in residence times is determined in a managed aquifer recharge system using a passive heat tracer test. The managed aquifer recharge system consists of a sequence of alternating elongated recharge basins and rows of recovery wells. The temperature of both the water in the recharge basin...
abstract 2016
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