This 3d image of the World Trade Center ruins and surrounding lower Manhattan
was generated in late September, 2001, by NOAA (United States National Oceanic
and Atmospheric Administration), using aerial photography and LIDAR (Light
Detection and Ranging) technology on-board a twin-engine Citation Jet. The
data was used to aid recovery and cleanup efforts, for instance to locate
the safest routes and optimally deploy cranes based on the height of rubble.
The precise identification of original foundation support structures, elevator
shafts and basement storage areas allowed rescue crews to pinpoint their digging
and recovery efforts.
Credit: NOAA/U.S. Army JPSD (Joint Precision Strike
Demonstration)
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