Blog

July 19, 2018

In 2015, Enviroprobe conducted an electrical resistivity imaging (ERI) survey to locate underground caves in Bermuda. Along with the beauty and myth of Bermuda came one of the most difficult surveys. The majority of the survey areas were in jungles with tough terrains. Paths had to be cleared for the survey lines and they were kept narrow to minimize the impact to vegetation. In humid weather, carrying heavy equipment while watching your footing was a challenge to the survey crew, both physically and mentally.

Despite the difficult survey conditions, Enviroprobe's survey...

December 23, 2014

Enviroprobe recently conducted an underground void locating survey at a traveling center in New Jersey. MASW instead of electrical resistivity tomography (ERT) was used due to reinforced concrete in the survey areas. MASW is one of the seismic survey methods evaluating the elastic condition of subsurface materials. MASW measures seismic surface waves generated from a seismic source, analyzes the propagation velocities of those surface waves, and then finally deduces shear-wave velocity (Vs) variations of subsurface materials.

For each survey area, survey lines were laid...

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