For 3 days, with the help of so-called vibro trucks, sound waves were sent into the ground every 50 meters and their echo recorded by hundreds of geophones along the route. The trucks, which apply ca. 20 tons of pressure to generate the vibrations, are safer and more environmentally friendly than explosive methods and are ideal for inner-city exploration.
"We are delighted to have completed the survey and especially the profile on the A1 on time and without any lost time incidents," said DMT's Dept. Head of Exploration Seismic, Rüdiger Misiek.
The survey was funded by the state of NRW and the EU.
Watch our vibros in action: https://cutt.ly/rlnye2p