Invasive vs. Non-Invasive Subsurface Exploration
Exploring the depths below our feet has historically involved disruptive practices that were dangerous, harmed the environment, and were…well, pretty loud. We know the last one may not seem important, but we think it may have everything to do with today's techniques.
You see, in the span of about thirty years, we had two world wars. As you can imagine, the development and implementation of advanced technologies like radar became a top priority across the globe. Since tactical considerations were a significant concern, technological advancements were preferred to have a minimal impact—whether in terms of noise or other physical evidence—to avoid detection.
Above: This early radar device was used during World War II on the beach in Normandy.
On a more peaceful note, a growing emphasis on sustainability arose in the late 20th century. Thankfully, modern geophysics matured enough to present viable solutions—like Electrical Resistivity Imaging (ERI) and other non-invasive techniques.
What Is “Invasive” Exploration?
"Invasive" exploration techniques involve physical disruption of the subsurface through methods like drilling, trenching, or blasting. These approaches require direct contact with the ground, causing significant disturbance to natural habitats and ecosystems…