Data, Movement on Hector EQ!!
Posted by Jeanine on November 25, 1999 at 01:20:51:

Hi All,
I haven't left yet , This was just sent to me.
Thought all would like to see this....
Copy and Paste, Shot cut time.....

> MEDIA RELATIONS OFFICE
> JET PROPULSION LABORATORY
> CALIFORNIA INSTITUTE OF TECHNOLOGY
> NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
> PASADENA, CALIF. 91109. TELEPHONE (818) 354-5011
> http://www.jpl.nasa.gov
>
> Image Advisory November 24, 1999
>
> RADAR SNAPSHOTS REVEAL QUAKE MOVEMENT IN SHARP DETAIL
>
> New spaceborne radar data of California's October 16 7.1
> magnitude earthquake near the desert town of Twentynine Palms
> show ground movement with millimeter precision four days after
> the temblor.
>
> The new radar measurements combine two images taken by the
> European Space Agency's European Remote Sensing-2 satellite on
> September 15, about one month before the quake, and October 20,
> four days after the quake. Overall, the image shows a complex
> pattern of displacements that provides new insights into the
> mechanisms of the earthquake, which fractured the region's Lavic
> Lake fault. Scientists refer to the event as the Hector Mine
> earthquake.
>
> The images are available at http://www.jpl.nasa.gov/hectormine .
>
> Each color is a contour of measurable ground displacement
> and the amount of displacement between successive contours of the
> same color is 10 centimeters (4 inches). Taken from space at a
> 23-degree angle, the contours can be counted to indicate that the
> ground moved as much as 5 meters (17 feet) near the fault.
>
> The technique of combining images from spaceborne radar
> instruments to discern elevation and surface change is called
> synthetic aperture radar interferometry. This scientific tool is
> quickly becoming a standard method for studying active tectonics
> and other natural processes both on Earth and on other planets
> and moons. Synthetic aperture radar interferometry allows
> seismologists and geophysicists to study regions of a planet with
> unprecedented precision and resolution over days, months and
> years, and to monitor processes such as volcanoes, glacier flows
> and landslides.
>
> The European Remote Sensing-2 satellite is managed by the
> European Space Agency headquartered in Paris, France. Radar
> analysis was carried out by JPL's imaging radar group for NASA's
> Earth Science Enterprise, Washington, DC. JPL is a division of
> the California Institute of Technology, Pasadena, CA.
>
> #####
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Have a Happy turkey day!!! :-)
Jeanine