Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
AUSA 2021: Logos Technologies Unveils MicroKestrel Wide-Area Sensor for Tethered UAS
FAIRFAX, Va.-Logos Technologies LLC, a leader in wide-area motion...
Guidebook on Airport Response to UAS Threats, Developed by Woolpert, Published by National Safe Skies Alliance
DENVER  — The “Airport Response to Unmanned Aircraft System...
Matternet and SkyGo partner with Abu Dhabi DoH for world’s first city-wide medical drone network
ABU DHABI, UAE - Today, Matternet announced a city-wide drone...
Draganfly Selected as Exclusive Manufacturer for Valqari Drone Delivery Stations and Receives Initial $400,000 Order
Los Angeles, CA. - Draganfly Inc. (NASDAQ: DPRO) (CSE:...
Vexcel Data Program Enhances Wide Area Capture Program in U.S. and Europe
BOULDER, Colo.- Vexcel Data Program announced today it will enhance...

June 5, 2013
Sizing Up a Volcano

image

Click on image to enlarge.

When studying volcanoes, detecting even slight movements of the land surface can tell a lot about what’s happening below. Scientists at NASA’s Jet Propulsion Laboratory have a new tool to observe such ground deformation.

The Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) sends pulses of L-band microwave energy from an aircraft-mounted sensor to the ground. Those microwave signals bounce back to the sensor and get translated into observations of land cover and topography, regardless of whether there are clouds.

UAVSAR captured the data for the accompanying false-color image on March 13, 2013, while flying on a NASA Gulfstream C-20A aircraft. The radar penetrated the tropical tree cover to detect the shape of the land surface around the Galeras volcano and the city of Pasto, Colombia. UAVSAR uses microwaves instead of visible light to make images of the land surface at a spatial resolution of 6 meters (20 feet) per pixel.

By itself, a single UAVSAR image has some utility for studying soil moisture, vegetation cover, wetlands and other landscape patterns, particularly in areas with a lot of cloud cover or dense forests. However, the real payoff for solid earth sciences comes from having two or more of these images.

Image courtesy of NASA.

Read the full story.

Comments are closed.