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Author Topic: Non-routine News  (Read 14389 times)

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AGelbert

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Earthquakes in Puerto Rico have changed the landscape. Satellites can see it from space 😲.

By Mike Wall January 13, 2020

The island's ground has shifted. 😨
 
This map shows ground changes, or displacement, on the eastern two-thirds of Puerto Rico following the 6.4-magnitude earthquake of Jan. 7, 2020. Areas of displacement are shown in red, with greater displacement by darker shades. The ground shifted up to 5.5 inches (14 centimeters) in a downward and slightly west direction. The orange circles show the cluster of quakes of aftershocks that have hit the island recently. (Image: © NASA/JPL-Caltech, ESA, USGS)

The swarm of earthquakes that have rocked Puerto Rico recently left marks that are visible from space.

About 2,000 quakes have shaken Puerto Rico since late December, with the most powerful a 6.4-magnitude temblor that took place last Tuesday (Jan. 7), centered just off the island's southwest coast. That one, the biggest quake to hit Puerto Rico in a century, killed at least one person, damaged nearly 600 buildings and caused at least $110 million in damage, Reuters reported.

The series of quakes have also altered the lay of Puerto Rico's land, researchers studying imagery captured by the European Space Agency's Copernicus Sentinel-1A satellite determined.

"The scientists found that the greatest displacement from the [satellite's] flyover area occurred west of the city of Ponce (identified by the green star), not far from the quake's offshore epicenter," NASA officials wrote in a statement on Friday (Jan. 10).

"They recorded up to 5.5 inches (14 centimeters) of ground change there," they added. "The ground appeared to shift downward and slightly to the west."

As it commonly does after natural disasters, NASA is making its data and scientific expertise available to aid response and recovery efforts in Puerto Rico.

"Products in the process of being produced include Suomi-NPP-based 'Black Marble' power outage maps, damage maps, and landslide maps," NASA officials wrote in the same statement, referring to the Suomi National Polar-orbiting Partnership satellite, a joint project of NASA, the U.S. National Oceanic and Atmospheric Administration and the Department of Defense.

"A webpage has also been created on the NASA Disasters Mapping Portal to supply relevant GIS data products," the officials added. "The map contains modified Copernicus Sentinel data processed by ESA and analyzed by scientists at NASA's Jet Propulsion Laboratory, and earthquake location data from the USGS [United States Geological Survey]."

The USGS is providing regular updates about the Puerto Rico earthquakes, including aftershock forecasts. You can find that information here.

Earth From Space: Amazing Astronaut Photos

Satellite Photos Help Indonesian Relief Workers Sort Through Earthquake, Tsunami Aftermath

Liftoff! Europe's Newest 'Sentinel' Satellite Will Study Earth's Seas, Land and Air

Mike Wall's book about the search for alien life, "Out There" (Grand Central Publishing, 2018; illustrated by Karl Tate), is out now. Follow him on Twitter @michaeldwall. Follow us on Twitter @Spacedotcom or Facebook.

https://www.space.com/puerto-rico-earthquake-effects-satellite-views.html



Light is sown for the righteous, and gladness for the upright in heart. Ps. 97:11

 

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