Integrated Use of Surface-Geophysical Methods to Indicate Subsurface Fractures atTibbetts Road, Barrington, New Hampshire

摘要

Four surface-geophysical methods were used to indicate the presence and estimatethe orientations of subsurface fractures at a site on Tibbetts Road, near Barrington, New Hampshire. The methods used were ground-probing radar, inductive terrain conductivity, direct-current resistivity, and seismic refraction. Three of the four geophysical data sets contain anomalies that are interpreted as representing subsurface fracturing. Interpretation of the individual data sets yields some conflicting results; however, an integrated interpretation indicates one fracture set oriented east--close to the orientations found in previous studies.