Open AccessEnhancements to and characterization of the very early time electromagnetic (VETEM) prototype instrument and applications to shallow subsurface imaging at sites in the DOE complex. 1998 annual progress report
Author(s) -
David L. Wright,
Weng Cho Chew
Publication year - 1998
Language(s) - English
Resource type - Reports
DOI - 10.2172/13573
Subject(s) - ground penetrating radar , instrumentation (computer programming) , nuclear decommissioning , electromagnetic shielding , characterization (materials science) , environmental remediation , environmental science , trench , remote sensing , engineering , systems engineering , marine engineering , geology , radar , computer science , aerospace engineering , electrical engineering , contamination , waste management , materials science , ecology , layer (electronics) , composite material , nanotechnology , operating system , biology
'The objective of this project is to enhance the state-of-the-art of electromagnetic imaging of the shallow (0 to 5 m) subsurface in electrically conductive media where ground penetrating radar (GPR) provides insufficient penetration and time domain electromagnetic (TEM) systems provide insufficient resolution. This objective is being pursued by instrumentation enhancements to the existing very early time electromagnetic (VETEM) system coupled with physical and numerical modeling. Success in this endeavor will improve the speed and accuracy of waste pit and trench location and characterization, and could have additional applications to shallow DNAPL and LNAPL spill and cleanup monitoring, clay cap integrity assessment, and landfill stabilization monitoring. This could result in significant savings in time and money during characterization, remediation, and decommissioning of facilities. This report summarizes accomplishments after 8 months of a three-year project. The authors have focused mainly on instrumentation and numerical modeling during this time.