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Latest Volcanic ash Stories

012c557c4253f9af81cfb5b98cad190e1
2009-03-25 16:14:04

Sea captain's historic report, modern photographs, lead scientists to new conclusions A 200-year-old report by a sea captain and photographs of the 2008 eruption of Mount Chaiten are helping scientists better understand strong volcanic plumes. In a paper published this week in the journal Nature, the scientists show that the spontaneous formation of a "volcanic mesocyclone"--a rotating, column-shaped vortex--causes the volcanic plume to rotate on its axis. The rotation, in turn, triggers a...

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2009-03-24 12:30:00

For the first time in nearly 20 years, the 10,200-foot Mount Redoubt in Alaska erupted five times overnight Sunday, propelling a 9 mile cloud of ash into the air, the Associated Press reported.  Although residents of the state's most populated city did not witness any falling ash, small communities just north of Anchorage observed bits of falling, fine gray dust on Monday. In a small 24-hour grocery store located in Willow, a small town just 50 miles north of Anchorage, 56-year old,...

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2009-02-20 11:20:00

Chile's Chaiten volcano erupted on Thursday, sending clouds of ash into the air and area security officials have called for an evacuation of nearby towns. Authorities have evacuated 160 people form the area of Chaiten, which lies six miles away from the volcano. However, many of the town's 4,500 former residents have refused to relocate the town, said the BBC. "It is dangerous to stay in the area. They must leave," said Interior Minister Edmundo Perez Yoma. "We have insisted for a long time...

5c35ec07655e1a9c07ffece9b467543d
2009-02-01 12:45:00

In the latest sign that an eruption could be imminent, further seismic activity has been detected at Alaska's Mount Redoubt, scientists reported Saturday.  "Since late Friday afternoon, seismic activity has been relatively low at Redoubt; however, it is still above normal background levels," the Alaska Volcano Observatory said early Saturday. "The volcano is in a state of unrest," it said. Geologists monitoring the volcano for indications of a possible eruption noticed that a hole in...

2009-01-30 20:53:20

U.S. health officials warn that with the possibility of Mount Redoubt Volcano in Alaska erupting residents should protect against ashfall. Officials at the Centers for Disease Control and Prevention in Atlanta said in a statement Friday that exposure to ash can harm health, with the respiratory tract particularly at risk. To protect yourself while outdoors or during ash clean up, health officials recommend you use an N-95 disposable respirator -- also known as an air purifying respirator....

6f6e377c67ae1b9e5983d5ba9cf24a241
2008-12-27 11:10:00

The Chaiten Volcano, which erupted in May for the first time in thousands of years, was said by Chile's government on Friday to still not be safe and that a decision regarding the future of the town of Chaiten would be made in the coming days, The volcano is forcing 7,000 residents to evacuate.  It is located only six miles from the town and started to spew ash, gas and molten rock on May 2. For weeks, constant eruptions were forcing a cloud of debris to keep aloft which soared as high...

2008-09-03 16:59:03

Reports of unusually fiery orange sunsets on Earth and ruby red rings around the planet Venus have popped up on the Internet in the last week. Some skywatchers suspect that these views are being colored by the dust and gases injected into the atmosphere by the Aug. 7 eruption of Alaska's Kasatochi volcano. The skywatchers are probably right. Kasatochi, part of the Aleutian Island chain, sent an ash plume more than 35,000 feet (10,600 meters) into the atmosphere when it erupted last...

c796dadd103eaea70b3d3d4fc926868b1
2008-08-15 13:51:31

People do all kinds of crazy things in Hawaii, but flying balloons over a volcano usually isn't one of them. Unless you're Adam Durant, that is. Durant, an adjunct geological sciences faculty member at Michigan Technological University, and colleagues took meteorological balloons to the Kilauea volcano this summer to make the first on-location measurements of volcanic gases as they actually spew from the mouth of the volcano. The Kilauea volcano began erupting in March. Durant and Matt...

2008-05-29 18:18:34

Researchers from The University of British Columbia and McGill University have simulated in the lab the process that can turn ordinary volcanic eruptions into so-called "supervolcanoes." The study was conducted by Ben Kennedy and Mark Jellinek of UBC's Dept. of Earth and Ocean Sciences, and John Stix of McGill's Dept. of Earth and Planetary Sciences. Their results are published this week in the journal Nature Geoscience. Supervolcanoes are orders of magnitude greater than any volcanic...

09f02a053b4d0bb23754fb22e0ef9893
2008-05-08 00:30:00

Southern Chile's Chaiten volcano has blanketed the entire area in a white cloud of ash that has reached as far away as Argentina.  Experts say the surprise eruption of the long dormant 3,280-foot Chaiten volcano, now in its seventh day, shows no signs of letting up and could go on for months.The ash has left some animals dead, disrupted flights from Argentina to the southern Patagonia region and caused the waters of a fjord that Chaiten sits on and a river to now appear white. The...


Latest Volcanic ash Reference Libraries

28_3226ca8171b89cafa5810af4efc77795
2005-05-25 10:36:46

Volcanic ash is the term for very fine rock and mineral particles less than 2 mm in diameter that are ejected from a volcanic vent. Ash is created when solid rock shatters and magma separates into minute particles during explosive volcanic activity. The usually violent nature of an eruption involving steam (phreatic eruption) results in the magma and perhaps solid rock surrounding the vent, being torn into particles of silt to sand size. The plume that is often seen above an erupting volcano...

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Word of the Day
humgruffin
  • A terrible or repulsive person.
Regarding the etymology of 'humgruffin,' the OED says (rather unhelpfully) that it's a 'made-up word.' We might guess that 'hum' comes from 'humbug' or possibly 'hum' meaning 'a disagreeable smell,' while 'gruffin' could be a combination of 'gruff' and 'griffin.'