Mt St Helens from the International Space Station

Mt St Helens from the International Space Station

ISS Crew Earth Observations experiment and the Image Science & Analysis Group, Johnson Space Center

http://visibleearth.nasa.gov/view_rec.php?id=16980


Early in October 2004 Mt. St. Helens rumbled back to life with earthquakes, minor eruptions of steam and ash, and renewed growth of the summit lava dome.

The main features visible in this image are the result of a cataclysmic 1980 eruption resulting from landslide failure of the northern flank of the volcano. The resulting directed blast of suddenly exposed gas-rich magma devastated a region of 20 km to the north and raised the bed level of Spirit Lake by 60 meters. The grayish Pumice Plain is mainly comprised of pyroclastic and mudflow deposits from the 1980 eruption.

Today, the volcano is being intensively monitored by United States Geological Survey scientists for indications of further increases in activity and hazard potential.