Estimation of Subsurface Fracture Roughness by Polarimetric Borehole Radar

摘要

Borehole radar is known as a powerful tech- nique for monitoring of subsurface structures such as water flow. However, conventional borehole radar systems are operated in the frequency range lower than 100MHz and the resolution is poor to measure a surface roughness and an inner structure of subsurface fractures directly. In order to monitor the water flow, these characteristics of subsurface fractures are important.