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Water flow and distribution around buried landmines
Proc. SPIE 6217, 62171S (2006); http://dx.doi.org/10.1117/12.666375
Monday 17 April 2006
Orlando (Kissimmee), FL, USA
Detection and Remediation Technologies for Mines and Minelike Targets XI
J. Thomas Broach, Russell S. Harmon, John H. Holloway, Jr.
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Add to FacebookSoil properties make a significant impact in the observed responses of various sensors for mine detection. Soil moisture affects the performance of electromagnetic sensors through its effects on soil thermal and dielectric properties. We have initiated laboratory, field and numerical studies to advance our fundamental understanding of the properties and governing processes of moisture distribution and flow around buried landmines. The laboratory component features magnetic resonance imaging (MRI) to map water distribution around a mine-like obstacle placed in a test soil sample. The field component investigates the moisture migration around landmines under realistic weather and soil conditions. We use anti-tank mines instrumented with moisture and temperature sensors to monitor the weather-driven processes. The numerical component investigates existing physics models underlying current simulations of moisture transport in soils. We use existing flow simulators to evaluate the completeness of process descriptions and to estimate the relative importance of individual processes on micro-scale moisture movement. These existing simulators include both continuum codes designed to work at scales much larger than the grain size and pore-scale models that discretize individual pores. We present the preliminary results of our investigations and discuss the potential impact of our findings on infrared and radar detection of buried landmines.
© 2006 COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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Online May 18, 2006
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Gary Koh, Mark D. Ginsberg and Stacy E. Howington, "Water flow and distribution around buried landmines",
Proc. SPIE 6217, 62171S (2006); http://dx.doi.org/10.1117/12.666375
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