Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
MDA Completes Acquisition of DigitalGlobe, Company Renamed Maxar Technologies
MacDonald, Dettwiler and Associates (MDA) completed its acquisition of...
National Geospatial-Intelligence Agency Awards Leidos Prime Contract for Information Technology Management
RESTON, Va.- Leidos (NYSE: LDOS), a FORTUNE 500® science and...
DJI Unveils Technology To Identify And Track Airborne Drones
BRUSSELS - DJI, the world's leader in civilian drones...
VRMesh V9.5 Available with New Advanced Features for LiDAR Strip Adjustment
Seattle, WA - VirtualGrid is pleased to announce the...
NavVis Partners with PrecisionPoint to Bring the American Indoors Online
NavVis, the global leader in indoor mapping, visualization, and...

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.