FY2004 Continued Acquisition of Geophysical Logs for Characterization of the Naval Air Warfare Center, New Jersey

As part of its applied research initiatives in FY2004, the USGS Office of Ground Water, Branch of Geophysics (OGW BG) assisted in the planning for and collection of geophysical logs at the USGS Toxic Substances Hydrology Program's Naval Air Warfare Center (NAWC) research site in New Jersey. This is an ongoing project in collaboration with other Toxics Program scientists, building on research conducted during FY2002 and FY2003.

In summer 2004 OGW BG conducted field work to test the use of innovative high-frequency seismic surface-wave methods for characterization of a shallow fault plane at the NAWC site. The work was performed through a cooperative agreement with the Kansas Geological Survey and included two new technologies:
(1) use of high-frequency seismic surface waves for near-surface imaging, and
(2) use of rapid-imaging methods for fast visualization and interpretation of the data.
The data collection proved to be rapid and cost effective. Early results show a correlation between faults and velocity profiles and are consistent with the current understanding of the bedrock surface.

Additional borehole geophysical logs also were collected in a cored borehole prior to the borehole being permanently grouted.

This research was funded by the USGS Toxic Substances Hydrology Program.

This research was conducted by John W. Lane, Jr., Carole D. Johnson, and John H. Williams (USGS OGW BG) with assistance from OGW BG staff.

For related information, see:

• Summary of FY2002 OGW BG research at the NAWC site
• Summary of FY2003 OGW BG research at the NAWC site
• USGS Toxic Substances Hydrology Program's NAWC Research Site web site
• NAWC Toxics Site Home Page