309 Soil Water Determination for Field Applications: Current Problems, Advances in Technology, and Scale Issues: I

Oral Session
S01 Soil Physics
Soil water content can be determined using many methods, including direct sampling, neutron scattering and a host of methods that rely on electronic measurement systems that respond to changes in the soil's dielectric permittivity at different scales. All methods suffer from some problems, which affect their utility for accurate calculations of the soil water balance and relevant inferences about rates of evapotranspiration, water use efficiency, recharge to groundwater and fluxes of dissolved substances and microfauna among other interests. This session will focus on methods of soil water determination. Relevant presentations would include, but not be limited to, those describing new sensor systems, calibrations for particular soils or conditions, comparisons and evaluations of sensors, relationship of measurement method to scale of the problem, discriminating between real spatial and temporal soil water content patterns and those appearing due to systematic measurement errors, accuracy of soil water balance, and theoretical and practical solutions to sensor application problems.
Wednesday, November 4, 2009: 12:55 PM-4:55 PM
Convention Center, Room 410, Fourth Floor

Steven Evett and Timothy Green
Steven Evett and Timothy Green
12:55 PM
Introductory Remarks
1:40 PM
Direct Measurements of Dielectric Constant of Porous and Non-Porous Media.
Martin Buehler, Decagon Devices, Inc.; Giulia Ricciardi, Decagon Devices, Inc.; Douglas Cobos, Decagon Devices, Inc.
1:55 PM
In Situ Validation of Soil Water Content From Satellite Remote Sensing.
Michael Cosh, USDA-ARS, Hydrology & Remote Sensing Lab.; Thomas J. Jackson, USDA-ARS, Hydrology & Remote Sensing Lab.
2:30 PM
The Spatial Sensitivity of Heat Pulse Methods for Measuring Soil Water Fluxes.
John Knight, Queensland Univ. of Technology; Gerard Kluitenberg, Kansas State Univ.; Wei Jin, Kansas State Univ.
2:45 PM
Significance of Heat Loss and Improved Calibration for Soil Property Estimates Using a Heat-Pulse Probe.
Andrew Sherfy, Univ. of Tennessee; Jaehoon Lee, Univ. of Tennessee; John Tyner, Univ. of Tennessee; Stacy Worley, Univ. of Tennessee
3:00 PM
3:55 PM
Scale Dependent Spatial Covariance of Soil Water Flux Across Soil Horizon Interfaces.
Miles Dyck, CANADA, Univ. of Alberta; R. Gary Kachanoski, CANADA, Univ. of Alberta
4:10 PM
Measurement of Oil and Water Contents In Oil-Contaminated Soil with a Thermo-Time Domain Reflectometry Probe.
Kosuke Noborio, Meiji Univ.; Misato Kakizawa, Meiji Univ.; Mito Saegusa, Meiji Univ.; Hiroyuki Ochiai, Meiji Univ.
4:25 PM
Measuring the Dynamic Soil Water Evaporation.
Xinhua Xiao, Iowa State Univ.; Robert Horton, Iowa State Univ.; J.L. Heitman, North Carolina State Univ.; Thomas Sauer, USDA-ARS, Natl. Soil Tilth Lab.; Tusheng Ren, China Agricultural Univ.; Robert Ewing, Iowa State Univ.
4:40 PM
<< Previous Session | Next Session >>
See more from this Division: S01 Soil Physics