Border Patrol

1 Result
Date Inputs. Currently set to enter a start and end date.
Current Filters Clear all

Detecting tunnels using seismic waves not as simple as it sounds

December 6, 2012 • ALBUQUERQUE, N.M. — You’d think it would be easy to use seismic waves to find tunnels dug by smugglers of drugs, weapons or people. You’d be wrong. Nedra Bonal of Sandia’s geophysics and atmospheric sciences organization is nearing the end of a two-year study, “Improving Shallow Tunnel Detection From Surface...