Taxonomy term

seismology

Japan's megaquake and killer tsunami: How did this happen?

On March 11, 2011, at 2:46 p.m. local time, a magnitude-9.0 earthquake ruptured a 500-kilometer-long fault zone off the northeast coast of Japan. Its epicenter was 130 kilometers off Sendai, Honshu; it occurred at a relatively shallow depth of 32 kilometers. The temblor violently shook northeast Honshu for six minutes, and collapsed its coastline by one meter.

17 May 2011

Don't forget about the Christchurch earthquake: Lessons learned from disaster

In the aftermath of the devastating magnitude-9.0 earthquake and tsunami that struck the Tohoku region of Japan on March 11, attention quickly turned away from a much smaller, but also highly destructive earthquake that struck the city of Christchurch, New Zealand, just a few weeks earlier, on Feb. 22.

17 May 2011

Mag.-8.9 quake strikes Japan, tsunami heads for Hawaii

A powerful magnitude-8.9 earthquake struck near the eastern coast of Honshu, Japan, today at 2:46 p.m. local time. The quake sent a tsunami racing across the Pacific Ocean to Hawaii, making landfall just before 3 a.m. local time. The Pacific Tsunami Warning Center has more information.

11 Mar 2011

Blogging on EARTH: FEMA's plans for New Madrid

This year is the 200th anniversary of the New Madrid quakes, the series of magnitude-7 to -8 earthquakes that rocked parts of Missouri and Arkansas in the winter of 1811-1812. But even 200 years later, the quakes continue to shake things up. And the Federal Emergency Management Agency (FEMA) is taking precautions — or maybe not.

02 Feb 2011

Tsunami kills hundreds in Indonesia

Updated on Oct. 28, 2010:

The death toll has continued to rise from the natural disasters that struck Indonesia Monday and Tuesday. Currently, officials are reporting 343 people dead with 338 still missing from the earthquake and tsunami. Meanwhile, the eruption of Mount Merapi has killed 33 so far; after a brief lull, the eruption began again on Thursday.

26 Oct 2010

Voices: Italian seismologists: What should they have said?

In Italy, seismologists who failed to predict the L’Aquila earthquake in 2009 could face manslaughter charges.

01 Jul 2010

Hazardous Living: Geologists to be charged for not predicting earthquake?

News out of Italy suggests that seven researchers who did not predict the L’Aquila earthquake in April 2009 are under formal investigation and may be charged with gross negligent manslaughter.

15 Jun 2010

Natural gas production linked to earthquakes in Texas

A saltwater disposal well, a part of the natural gas production process, may have been responsible for triggering a series of minor earthquakes in the Dallas-Fort Worth area of Texas in 2008, according to a recent study.

11 May 2010

Moonquake mystery deepens

Between 1969 and 1972, five Apollo missions installed seismic stations at their landing sites on the nearside of the moon. Because the moon was thought to be seismically dead, the instruments were left almost as an afterthought to detect meteor strikes. But from the time the stations were switched on until they were decommissioned in 1977, they recorded hundreds of internally generated moonquakes, some as strong as magnitude 5.5 on the Richter scale.

19 Aug 2009

US earthquakes actually a powerful Siberian quake

A magnitude-7.3 earthquake in Siberia Monday was mistaken by U.S. seismometers as temblors in Idaho and California.

The actual quake occurred about 500 kilometers deep, in the Sea of Okhotsk about 315 kilometers northwest of Russia’s Kamchatka Peninsula, the U.S. Geological Survey reported.

25 Nov 2008

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