Geophysics Department Core Capability:
Advanced Geophysical Instrumentation
The focus of this research area is the development of innovative geophysical hardware and methodologies for subsurface imaging and monitoring, such as high-resolution borehole tomographic tools (radar and seismic), and micro-earthquake monitoring systems. Specific examples include the following: development of low-cost passive seismic sensor arrays; development of both passive and active seismic systems for utilizing micro-hole technology (boreholes that are smaller diameter and less expensive to drill); and development of an optimum electromagnetic system for detecting and identifying unexploded ordnance.
Additionally, ESD's long development of borehole seismic sources continues, with recent focus on the piezo-tube, a tubing-deployed seismic source allowing continuous active-source seismic monitoring during fluid injection/withdrawal. Other development includes multisource arrays and a small-diameter high-frequency orbital-vibrator shear source for crosswell and single-well seismic imaging applications.
ESD has developed a multi-sensor electromagnetic system (BUD, Berkeley UXO Discriminator) that quickly determines the location, size, shape, and metal content of buried unexploded ordnance (UXO) and more importantly differentiates explosive from harmless metal.
