TY - RPRT TI - Modeling GPR data to interpret porosity and DNAPL saturations for calibration of a 3-D multiphase flow simulation AU - Kristen W. Sneddon AU - Michael H. Powers AU - Raymond H. Johnson AU - Eileen P. Poeter PY - 2002 DO - 10.3133/ofr02451 UR - https://pubs.usgs.gov/publication/ofr02451 ID - ofr02451 ER -