Geophysics

Geophysics involves various techniques to quantitatively study the surface and subsurface of the earth. These methods include seismic refraction, seismic reflection, ground penetrating radar (GPR), electrical resistivity, induced polarization (IP), TEM,  gravity gradiometry, magnetotellurics (MT) and others.

Whales imaging the ocean crust?
Geophysics

Whale Songs to Image the Ocean Subsurface

February 17, 2021 rockman Comments Off on Whale Songs to Image the Ocean Subsurface

A cool new study indicates there may be potential for seismologists to gather information on the ocean subsurface using passive seismic data collection with whale songs as the seismic source! Researchers from Oregon State University […]

Geophysics

Kansas Geological Survey uses Geophysics to Find Border Tunnels

February 5, 2008 rockman Comments Off on Kansas Geological Survey uses Geophysics to Find Border Tunnels

The Kansas Geological Survey has some interesting seismic equipment that they have used on behalf of the U.S. Department of Homeland Security to look for drug tunnels along the US-Mexico border. I’ve never seen anything quite like this. The sensors all appear to be placed within an old fire hose and mounted onto a Bobcat Toolcat utility machine. On the front of the vehicle is a cyllinder with a 60-lb weight that gets dropped. Read on. (Photo by Richard Gwin, LJWorld.com)

[…]