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Recent Articles
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Topic: NASA’s Uninhabited Aerial Vehicle Synthetic Aperture RadarWritten by Alan Buis
Long-term subsidence is a serious and challenging concern for California’s water managers, putting state and federal aqueducts, levees, bridges and roads at risk of damage. Already, land subsidence has damaged thousands of public and private groundwater wells throughout the San Joaquin Valley. ![]() Total subsidence in California’s San Joaquin Valley between May 7, 2015 and Sept. 10, 2016, as measured by ESA’s Sentinel-1A and processed at JPL. Two large subsidence bowls are evident, centered on Corcoran and southeast of El Nido, with a small, new feature between them, near Tranquility. (European Space Agency/NASA-JPL/Caltech/Google Earth) «Read the rest of this article» Sections: Technology | No Comments
NASA uses Aircraft mounted instruments to examine growing Deltas in LouisianaWritten by Alan Buis
Last fall, a team from NASA’s Jet Propulsion Laboratory in Pasadena, California, showed that radar, lidar and spectral instruments mounted on aircraft can be used to study the growing deltas, collecting data that can help scientists better understand how coastal wetlands will respond to global sea level rise. ![]() False-color images of rising tide at Wax Lake Delta, Louisiana, made by JPL’s Uninhabited Aerial Vehicle Synthetic Aperture Radar instrument on Oct. 17, 2016. Red, blue and green correspond to different land-surface properties. Rising water appears as increasing darkness. (NCAR/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA uses Airborne Radar to study sinking rate of New OrleansNASA’s Jet Propulsion Laboratory
The observed rates of sinking, otherwise known as subsidence, were generally consistent with, but somewhat higher than, previous studies conducted using different radar data. The research was the most spatially-extensive, high-resolution study to date of regional subsidence in and around New Orleans, measuring its effects and examining its causes. ![]() Subsidence in Jefferson Parish, Louisiana, from June 2009 to July 2012, as seen by NASA’s UAVSAR instrument. The measured displacements are a combination of movement of the ground and of individual structures. The inset at lower right shows the parish location within Greater New Orleans. (NASA/JPL-Caltech, Esri) «Read the rest of this article» Sections: Technology | No Comments
NASA reports Valley Land in California sinking due to DroughtWritten by Alan Buis
“Because of increased pumping, groundwater levels are reaching record lows — up to 100 feet (30 meters) lower than previous records,” said Department of Water Resources Director Mark Cowin. “As extensive groundwater pumping continues, the land is sinking more rapidly and this puts nearby infrastructure at greater risk of costly damage.” ![]() Total subsidence in California’s San Joaquin Valley for the period May 3, 2014 to Jan. 22, 2015, as measured by Canada’s Radarsat-2 satellite. Two large subsidence bowls are evident, centered on Corcoran and south of El Nido. (Canadian Space Agency/NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA’s Aerial Vehicle Synthetic Aperture Radar to be used to Survey Napa Valley Quake AreaWritten by Alan Buis
A modified C-20A aircraft from NASA’s Armstrong Flight Research Center carrying JPL’s Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) flew a five-hour data-collection mission on Friday, August 29th, over the area that experienced a major quake during the pre-dawn hours on Sunday, August 24th. ![]() NASA’s C-20A Earth science research aircraft with the UAVSAR slung underneath its belly lifts off the runway at Edwards Air Force Base on a prior radar survey mission. (NASA Armstrong) «Read the rest of this article» Sections: Technology | No Comments
NASA Earth Science study uses UAVSAR imager to take close look at Volcanoes in Central, South AmericaWritten by Alan Buis
The Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, developed by NASA’s Jet Propulsion Laboratory in Pasadena, California, was flown on NASA’s C-20A. The 29-day deployment ended May 6th when the aircraft returned to its base in Palmdale, California, after 19 flights totaling 97 hours in the air. ![]() This false-color image of Peru’s Ubinas volcano was acquired on April 14, 2014, by NASA’s Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR. (NASA/JPL-Caltech) «Read the rest of this article» Sections: Technology | No Comments
NASA study shows Baja Earthquake caused quiet motion in Southern California faultsWritten
The quiet motion associated with the widely felt, magnitude 7.2 earthquake centered in northern Baja California in Mexico, in April 2010 was discovered in before-and-after radar images of the region made by a NASA airborne instrument that produces extremely accurate maps of Earth motions. ![]() UAVSAR measurements north of the 2010 El Mayor-Cucapah earthquake, which scientists have learned was followed by quiet movement on faults in California. Inset map shows the region on the California-Mexico border. (NASA/JPL/USGS/California Geological Survey/Google) «Read the rest of this article» Sections: Technology | No Comments
NASA creates 3D Image of Los Angeles Earthquake ZoneWritten by Alan Buis
There have been hundreds of aftershocks, including one of magnitude 4.1. ![]() JPL scientists modeled the March 28, 2014 magnitude 5.1 quake near Los Angeles based on USGS seismic data. This model image shows how the quake may appear to airborne radar, such as NASA’s UAVSAR, which will survey the area soon. Blue shades indicate the greatest surface displacement. (NASA/JPL-Caltech/USGS/Google Earth) «Read the rest of this article» Sections: Technology | No Comments
NASA to study active volcanoes in Alaska and Japan using images from it’s Uninhabited Aerial Vehicle Synthetic Aperture RadarWritten by Beth Hagenauer, Public Affairs
The modified NASA C-20A (G-III) aircraft, with JPL’s Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) installed in a pod under its belly, departed NASA’s Dryden Aircraft Operations Facility in Palmdale, CA, October 2nd, en route to Joint Base Lewis-McChord in Tacoma, WA. ![]() This UAVSAR interferogram shows active volcano Mount St. Helens (left) and dormant volcano Mount Adams, both in Washington state. The sensor collected data for this image during flights in July 2009 and August 2010 to compute the surface deformation that could indicate activity in the volcanoes’ magma. No deformation was evident during this period. (NASA image) «Read the rest of this article» Sections: Technology | No Comments
NASA-Funded Quake Forecast Gets High Score in StudyWritten by Alan Buis
The researchers compared seven earthquake forecasts submitted to a competition organized by the Southern California Earthquake Center in 2005. «Read the rest of this article» Sections: News | No Comments
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