Topographic map of Mounts Morning and Discovery (1:250,000 scale) from USGS Mount Discovery
Sources
Amar Andalkar (2005-). Amar Andalkar's Ski Mountaineering and Climbing Site. Skiing the Pacific Ring of Fire and Beyond, (http://www.skimountaineer.com/ROF/RingOfFire.html/)
Mount St. Helens spews steam and gray ash from a small explosive eruption in its crater.
Mount St Helens, which erupted in 1980 and killed 57 people, has been emitting steam and ash since Friday, prompting the US Geological Survey (USGS) to issue its highest level of alert, warning of an imminent eruption.
Mount St Helens is in south-western Washington state, about 160 km south of Seattle, and 80 km north of a busy airport at Portland, Oregon.
Scientists have mounted sensitive equipment in the crater to measure the earth moving and try to figure out how much magma is moving to the surface.
Mount St. Helens now has no bulge other than the lava dome and seems to be venting in a relatively predictable way, Lowenstern said.
Though the airspace over Mount St. Helens is now closed to commercial flights, USGS teams continue to drop off crews to work on equipment on the mountain flanks, and to fly over the crater to measure gases.
Feeds |
Contact