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Geologic Hazards

Drillers target earthquake zone

Drillers and researchers are attempting to drill up to 7km into an active earthquake zone off the coast of Japan. The  Nankai Trough Seismogenic Zone is at a subduction zone boundary and is thought to […]

Geologic Hazards

Volcano Erupts in Colombia

NEIVA, Colombia — Thousands of people were evacuated after a long-dormant volcano erupted provoking avalanches and floods that swept away houses and bridges. The Nevado del Huila volcano’s eruptions were its first on record since […]


Geologic Hazards

Residents of Astoria Oregon Learn Hard Lesson on Landslides

Update: Feds approve disaster relief funding for Astoria Slide

Some of you might remember Astoria Oregon as the picturesque backdrop for the movies Goonies or Kindergarten Cop. But now it might be known for something else: being the most landslide prone city on the northern Pacific coast. (Photo by ALEX PAJUNAS – The Daily Astorian)

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Geologic Hazards

New Madrid Fault Zone Controversey

Geologists and seismologists have long studied the New Madrid Seismic Zone after three magnitude 8 earthquakes struck the area in the Winter of 1811-1812. However a forthcoming report by Seth Stein and published by the American Geological Society contends the hazard has been overstated. His colleagues at the USGS and the University of Memphis disagree.

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Geologic Hazards

Telegraph Hill landslide

On February 27, 2007 a 75-ft wide section of greywacke sandstone failed on the south end of Telegraph Hill, in the very pricey North Beach district of San Francisco. No one was injured, but as many as 120 people were displaced from their homes as city building inspectors red-tagged 7 building effected by the slide.

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Geologic Hazards

Oregon Slope Failure Caught on Video

A traffic camera catches trees and dirt sliding down a hill onto a highway in Portland, Ore. It happened on one of Oregon’s busiest routes – Highway 26, heading out of Portland to the west on March 29. Read on to see the video.

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Geologic Hazards

Helens, Rainier are tops among most dangerous U.S. volcanoes

The Yakima Herald Republic has an interesting article on volcanic hazards of Mt. Rainier. Apparently the USGS has plans to increase monitoring with additional seismographs, GPS units, and some kind of laser surveying targets. Read on for a link to the article.

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