Thursday, January 29, 2009

Alaska Volcano Ready To Blow?

1990 Eruption- stratovolcano Redoubt
Alaska Volcano Has Geologists on Alert

ANCHORAGE, Alaska (Jan. 29) — Mount Redoubt, a volcano 100 miles southwest of Anchorage, is rumbling and simmering, prompting geologists to warn that an eruption may be imminent.

Scientists from the Alaska Volcano Observatory have been monitoring activity round-the-clock since the weekend.

On Thursday, the observatory said: "Seismicity remains above background and largely unchanged with several volcanic earthquakes occurring every hour."

The last time the 10,197-foot peak blew was during a five-month stretch starting in December 1989. It disrupted international air traffic and placed a layer of volcanic dust throughout the Anchorage area.

Volcanoes in Alaska, including Redoubt, typically erupt explosively, shooting ash almost eight miles high. Volcanic ash features small, jagged pieces of rock and glass.

This differs from volcanoes in Hawaii, which usually have slow rolling lava ooze out.

The difference is gas trying to escape gets blocked, possibly by a lava dome or a viscous magma that increases the power from beneath, said observatory geologist Jennifer Adleman.

"Its pressure keeps building and building," she said.

Depending on wind, the ash plume could be pushed straight at Anchorage, the state's largest city. This has prompted state and city officials to post bulletins on how to deal with the ash. Tips include staying inside, wearing a mask or wet bandanna if going outside and wearing goggles over contact lenses.

Once again, we have more volcanic activity taking place. This one however, is not one of the many that have awakened recently from hundreds and thousands of years of inactivity. Nonetheless, it does bear keeping an eye on.

"No Volcanoes, No Land Mass",

Bobby Sharpe Bobby Sharpe's "Global Peoplz Newz": Russian Volcano Awakens After 3500 Years Bobby Sharpe's "Indigo Spiritz": "2012" Are YOU Prepared?

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