Iturralde-Remote Sensing

Remote Sensing

Our view and understanding of the earth have been dramatically changed by the remote sensing of our planet developed over the last few decades. Remote sensing is an older science than most people realize, dating back to the 1840’s when the first cameras photographed the earth from balloons.

The Iturralde Structure imagery was done with the thematic mapper instrument aboard the Landsat satellite in 1985. The structure is distinguished by being circular in the part of the image. Since the Landsat is in false color, the reds characterize vegetation and differences in vegetation show up as different shades of red. Likely causes of the vegetation differences are differing elevations or different soil characteristics. Either of these could have been caused by a meteorite impact.

Tutorials on remote sensing are available at

Remote Sensing and Image Interpretation & Analysis
http://mercator.upc.es/nicktutorial/Overview/overview.html

and

USGS EarthShots - Satellite Images of Environmental Change - right frame
http://edcwww.cr.usgs.gov/earthshots/slow/Help-GardenCity/Help-GardenCity