June 11th, 2019
Choosing the Right Antenna for GPR Investigations

By Jami Harmon, GSSI Antennas used with ground penetrating radar (GPR) come in different shapes and sizes. The largest antennas typically radiate the lower frequencies necessary to detect the deepest targets. The smallest antennas radiate the highest frequencies that provide the greatest resolution required to detect small, shallow targets. The “best” antenna for a job

June 4th, 2019
Monitoring Network Assesses Ozone Layer Threats

On the heels of the first definitive signs of the ozone layer recovery in 2018, an international team of scientists discovered that production and emission of a banned, potent ozone-depleting chemical is on the rise again. A new research finding, published in Nature on May 23, locates the source region for about half of those

May 28th, 2019
USGS, Scientists Test Drone-Based Stream Gauging

U.S. Geological Survey (USGS) and independent scientists gathered in Auburn, Maine, to evaluate the use of sensor-mounted unmanned aircraft systems (UAS), or drones, to gauge stream stage, velocity, bathymetry and discharge. The technology is being evaluated and modeled to determine whether it will support the fast, accurate and safe measurement of rivers, especially when they

May 20th, 2019
360-Degree Camera Provides Ground-Based Imaging Following Weather Disasters

In the aftermath of natural disasters, capturing image data is a critical information resource for disaster management, supporting the response effort to deliver emergency infrastructures and supplies, risk assessment, damage assessment for cost estimation, structural analysis, and beyond. After Hurricane Michael in 2018 and a devastating tornado in Alabama in 2019, Site Tour 360 visited