HR: 1340h
AN: H23G-1722    [Abstracts]
TI: Multi-spectral Colloid Transport Imaging at the Meso-scale
AU: * Kraft, E L
EM: krafte@engr.orst.edu
AU: Selker, J S
EM: selkerj@engr.orst.edu
AB: Light-transmission is a relatively inexpensive approach to visualization which can be applied at the meso-scale for observation of subsurface flow and transport affected by heterogeneities such as textural layering, textural inclusions, preferential flow paths, and transient infiltration. A light-transmission system was developed to allow for near-real-time collection of multiple signals for the detection of colloid concentration, water content, and water flow paths throughout a 70cm x 50cm x 1cm porous media system. Fluorescent latex colloids, fluorescent tracer dye, various grades of translucent silica sand, and a specific set of LEDs and bandpass filters are employed in this system to allow for the collection of multi-spectral data which may be used to evaluate water flow paths and transport behavior of colloidal particles under spatio-temporally heterogeneous subsurface conditions.
DE: 0452 Instruments and techniques
DE: 1829 Groundwater hydrology
DE: 1831 Groundwater quality
DE: 1832 Groundwater transport
DE: 1835 Hydrogeophysics
SC: Hydrology [H]
MN: 2007 Fall Meeting