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Nuevas Geografías
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Mount St. Helens: Volcanic Eruption and Recovery

Mount St. Helens: Volcanic Eruption and Recovery | Nuevas Geografías | Scoop.it
The 1980 Mount St. Helens eruption was one of the most significant natural disasters in the U.S. in the past half-century. Landsat captured the extent of, and recovery from, the destruction.

 

The accompanying satellite images (also compiled in a video to show the temporal changes) demonstrate one way that remote sensing images can help us better understand the spatial patterns in the biosphere. 


Via Seth Dixon
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NASA Earth Observatory - Vegetation Index

The NDVI (Normalized Digital Vegetation Index) is on of the primary methods for detecting healthy vegetation using satellite imagery.  This also serves as a useful way to distinguish between distinct ecological and agricultural regions and the temporal patterns of planting seasons.  

 

This video was found on a site titled "Explorations in agricultural research" with many great links http://zerogravitygardening.blogspot.com/


Via Seth Dixon, Michelle Kinzel
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