LIDAR

http://www.noaanews.noaa.gov/stories/s798b.htm

When using LIDAR it can detect different elevations with up to a cenimeter accuracy, which is very impressive. LIDAR is used on barrier isands to anything from cities and landscapes. It is commonly used to detect hurricane damage on barrier islands from overhead in airplanes. LIDAR stands for, Light Detection and Ranging. The LIDAR image above is of the World Trade Center after the attacks on 9/11. It is easy to see the destruction from the images when comparing it to the surronding buildings. The main pattern and trend of LIDAR is to detect differences in elevation over various objects and landscapes.