Thirty years ago, Mount St. Helens roared back into major activity with a massive eruption that leveled surrounding forest, blasted away over a thousand feet of the mountain’s summit, and claimed 57 human lives.
This short video shows the catastrophic eruption – and amazing recovery – through the eyes of the Landsat satellites, which have been imaging our planet for almost forty years.
Visit:
NASA Earth Science Video Gallery
NASA Earth Observatory
Above the Earth, Below the Surface: Landsat’s Role in Monitoring Water Quality
September 18, 2023
Safeguarding freshwater resources is crucial, and while scientists use a variety of ground-based techniques to gauge water quality, the Landsat program has provided water quality data from orbit for decades.
