SEEING THE NENANA RIVER VALLEY FROM SPACE - Some Background

Alaska is viewed from space by a number of different satellites. Depending on the time of year, the wavelength that the satellite senses earth surface data in, the amount of area that is sensed at a time and how these data are processed, the images of Alaska look very different.

Learn about remote sensing.

See a Landsat image of Alaska.
See MODIS images of Alaska.


Below is a satellite image of North America (right) and a map. What sorts of information can you see in each? Are they the same for both?

See a larger version of these images.