On a cool spring morning in the mountains of southwest Washington, 12-year old Cathy Cahill helped her dad plant scientific instruments around the base of trembling Mount St. Helens. A few days later, the volcano blew
Volcanoes are an awe-inspiring and hazardous part of our planet. And now, they’re being made to sing. Scientists are turning seismic data into audio data in order to grasp just what’s going on deep in the Earth’s crust, and better forecast future explosive eruptions.
On Saturday May 4th 2013 the Alaska Volcano Observatory detected a series of low-level explosions at Cleveland volcano. Three discrete explosions occurred at 5:00 am, 9:17 am, and 11:44 am Saturday, while subsequent less powerful rumbles on Sunday denoted an ongoing low-level eruption. The sequence of eruptions emitted ash, gas, and steam into local airspace. […]
“By dating ash,” said Richard Vanderhoek, “An archaeological site in Alaska, can be placed on a chronostratographic timeline.” Or in other words: the chemical makeup of the ash, matched with a volcano eruption, will provide an approximate date of the site. Archaeologists worldwide have dated ancient sites
One hundred years after the largest volcanic eruption of the 20th century, the Valley of Ten Thousand Smokes is still a moonscape of ash and volcanic rock, without a tree or shrub in sight. The valley, located on the Alaska Peninsula where the Aleutians hook on to mainland Alaska, is a silent reminder of the […]
Roughly translated and abbreviated; ASH? WHAT ASH? *#/! ASH!, was the conversation between the Anchorage control tower and the KLM pilot who had the misfortune of flying through a volcanic ash cloud on a December morning in 1989. It was dark, as it is most December mornings in Alaskan North.
At current (Aug 01, 2011), the Alaska Volcano Observatory’s website status report has an advisory listed for Mount Cleveland: “A weak thermal anomaly was observed in satellite images of Cleveland over the past day… Short-lived explosions with ash clouds that could exceed 20,000 ft above sea level can occur without warning
With active volcanoes as close as 80 miles of Anchorage city limits, Alaskans are grateful for the professional volcano watchers who work in a nondescript building on the campus of Alaska Pacific University, topped with a massive array of tracking and communication instruments. “The August 18, 1992 Spurr eruption, sent an ash cloud here that […]