Geology

8.7 ideas in earthquake prediction

Publication: MSNBC.com   Date: April 6, 2009   View Article

Earthquakes are notoriously difficult, if not impossible, to predict. “You are dealing with a very complex physical system that behaves very differently in many places,” says David Schwartz, a geologist with the U.S. Geological Survey’s San Francisco Bay Area Earthquake Hazards Project. Nevertheless, researchers are trying to improve earthquake probability forecasts and working toward, maybe one day, prediction and prevention. Learn about eight of their ideas.

Undersea Volcanic Eruptions Linked to Ancient Die Off

Publication: National Geographic News   Date: July 16, 2008   View Article

A surge of undersea volcanic activity about 93 million years ago sapped the oceans of oxygen, triggering a mass extinction of marine life, a new study finds.

The catastrophic event buried a thick mat of organic matter—from large clams to single-celled algae—on the seafloor, which today is a major source of oil.

8 dangerous volcanoes around the world

Publication: MSNBC.com   Date: July 3, 2008   View Article

After 9,000 years of dormancy, the Chaiten volcano in southern Chile awoke in May and began a series of eruptions that spewed ash miles into the sky. Learn about this and seven more dangerous volcanoes around the world.

Nine killer earthquakes

Publication: MSNBC.com   Date: April 25, 2008   View Article

Thousands of earthquakes happen every day around the world. Most are hardly felt, if at all. But sometimes pieces of Earth’s crust suddenly slip past each other in a massive release of pent-up stress. The jolted Earth rumbles, buildings collapse, streets buckle, and thousands of people die. These movements are nature’s most violent act and take a grim toll on human life and infrastructure. Learn about nine of the deadliest.

Bay of Bengal Faces Major Tsunami Threat, Study Says

Publication: National Geographic News   Date: September 5, 2007   View Article

Millions of people along the coasts of Myanmar (Burma), Bangladesh, and India may be at risk of suffering a catastrophic tsunami-generating earthquake, according to a new study.

The northern Bay of Bengal could be pummeled by a temblor as massive as the one that sent devastating tsunamis into Indonesia and other Indian Ocean countries in December 2004, the research suggests.

Volcanic Activity Triggered Deadly Prehistoric Warming

Publication: National Geographic News   Date: April 26, 2007   View Article

The prehistoric bout of volcanic activity that slowly ripped Greenland from Europe triggered a deadly global warming event, a new study says.

The event, which happened about 55 million years ago, has similarities to today’s climate changes, which have been linked to human generation of greenhouse gases from fossil fuels.

Major Earthquake Due to Hit Southern California, Study Says

Publication: National Geographic News   Date: June 21, 2006   View Article

Get ready for the Big One.

About 300 years of pent-up stress in southern California is sufficient to trigger a catastrophic earthquake on the San Andreas Fault system, according to a new study.

© 2008-2010 Collected Writings By John Roach