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One week after two strong earthquakes
near the city of Ridgecrest in southern California, scientists from NASA and
Engineers continue to analyze satellite data to obtain information about errors in
breaks. Their observations help local authorities to assess the damage and
will also provide useful information to engineers for designing resilient
structures capable of withstanding breaks such as those created by the last
earthquake
The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory in Pasadena
California, created this map describing areas likely to be damaged
result of recent major earthquakes. The color variation from yellow to red
indicates a change of surface or more and more important damage. The map
covers an area of 155 km by 186 km (250 km by 300 km), as shown by the large
red polygon. Each pixel is about 30 meters in diameter.
To produce the map, the team used Synthetic Aperture Radar (SAR) images.
Copernicus Sentinel-1 satellites from the European Space Agency from before
and after the sequence of earthquakes – July 4 and 10, 2019, respectively. The map
may be less reliable in areas of vegetation but may provide useful guidance in
identify the damaged areas.
NASA's disaster program is in communication with the
California Earthquake Clearinghouse, which coordinates response efforts
with the California National Air Guard, the US Geological Survey and the
Federal Emergency Management Agency. NASA analysts use satellite data
produce visualizations of potential soil deformation and landslides, among
other seismic impacts and make them available to the intervention agencies.
The NASA Catastrophe program encourages the use of satellite observations in
predict, prepare, react and recover from disasters around
the world.
the
The analysis of the ARIA team was funded by NASA.
For more information about ARIA, visit:
http://aria.jpl.nasa.gov.
For more information on NASA's disaster program,
visit:
http://disasters.nasa.gov
Media contact
Smith's Spirit
Jet Propulsion Laboratory, Pasadena, California
818.354.4269
[email protected]
2019-143
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