HR: 0830h
AN: H31B-0445    [PDF]
TI: Experimental Design Considerations for Estimating Flow Parameters with GPR and Hydrological Measurements
AU: * Majone, B
AF: Dipartimento di Ingegneria Civile ed Ambientale, Universit… di Trento, via Mesiano 77, Povo Trento, 38050 Italy
AU: Kowalsky, M B
AF: Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 90-1116, Berkeley, CA 94720 United States
AU: Kowalsky, M B
AF: Civil and Environmental Engineering, University of California, 435 Davis Hall, Berkeley, CA 94720 United States
AU: Rubin, Y
AF: Civil and Environmental Engineering, University of California, 435 Davis Hall, Berkeley, CA 94720 United States
- AB: Using a method recently developed in our group for estimating flow parameter distributions in the vadose zone with transient ground-penetrating radar (GPR) data (such as travel times or inferred values of water saturation) and hydrological data, we investigate various issues of experimental design for parameter estimation. Specifically, an extension of the pilot point method was recently implemented in the iTOUGH2 software (Finsterle, 1999) so that GPR measurements collected during a transient flow event could be used to estimate distributions of flow parameters (Kowalsky et al., 2003). Using this approach, we examine the impact that ponding conditions, temporal sampling strategies, increasing degrees of soil heterogeneity, and varying soil characteristics have on parameter estimation uncertainty.
DE: 0600 ELECTROMAGNETICS
DE: 1866 Soil moisture
DE: 1869 Stochastic processes
DE: 1875 Unsaturated zone
DE: 3260 Inverse theory
SC: Hydrology [H]
MN: 2003 Fall Meeting