mega-quake

A geological event which has been defined
(1) In the media as an earthquake of 7.0 or greater on the Richter scale; or
(2) By the US Geological Survey as a magnitude-10 or greater earthquake. Magnitude is based in part on the length of the geological fault—i.e., the longer the fault, the larger the earthquake. There are no known faults long enough to generate a magnitude-10 “mega-quake.”

References in periodicals archive ?

The 1985 earthquake was labeled as a mega-quake, which means it was caused by an extremely long fault.

Latest Mexico City Earthquake Occurs Exactly 32 Years after 1985 Disaster

Southern California's most recent mega-quake was in 1857, also estimated to be magnitude 7.8, when the area was sparsely populated.

Quake in California could be catastrophic

However, I am very glad we're updating our infrastructure, especially bridges, with the impending mega-quake..."

The week's hot topics on the Web

While unlikely, the so-called "mega-quake" could cost over $289 billion in repairs.

Ferndale Quake Raises San Andreas Fault Fears In California

Winston Castelo, author of House Resolution 2096 "urging the Metro Manila Development Authority to bare a masterplan to render the metropolis prepared for the imminent mega-quake as forecasted by PHIVOLCS, declaring that the West Valley fault traversing across Metro Manila is ripe for a possible strong earthquake."

Philippines : Is Metro Manila prepared for the imminent mega-quake?

However, the mega-quake they had been fearing may still be yet to happen, said Paul Earle, a seismologist at the U.S.

Chile hit by powerful quake aftershock, no major damage

Regrettably, the general situation surrounding the EQ prediction remains essentially the same as before or is even worse after the 2011 Mega-quake. Seismologists lost confidence in general, so that their "Impossibility Myth" has become more "legitimate".

On earthquake prediction in Japan

Explaining the new system, Takeshi Koizumi, a senior coordinator for international earthquake and tsunami information, described the technology aimed at increasing the speed and precision with which a tsunami can be predicted following a mega-quake.

Japan unveils improved warning system to predict tsunamis

SEOUL - A South Korean national has died in the mega-quake and tsunami in Japan, the first confirmed death of a South Korean in the disaster, Yonhap News Agency reported Monday, citing the South's foreign ministry.

Kyodo news summary -3-

Saturday's tremor unleashed 50 giga-tonnes of energy and broke up about 250 miles of fault zone.The epicentre was 140 miles north of the largest quake ever recorded - a magnitude 9.5 that killed 1,600 people in Chile and scores of others in the Pacific in 1960.And the force of the mega-quake was felt as far away Brazil - 1,800 miles to the east although fears of a devastating tsunami across the Pacific receded yesterday.

'Elite class' sparks fear of tsunami

The quake tore apart houses, bridges and highways, and Chileans near the epicentre were thrown from their beds by the force of the mega-quake, which was felt as far away as Sao Paulo in Brazil - 1,800 miles to the east.

Looters fought as quake toll hits 708; CHILEAN EARTHQUAKE DISASTER

This mega-quake has even been blamed for the eruption of the volcano Puyehue two days later.

THE GUINNESS BOOK OF AMAZING NATURE: EARTHQUAKES; PART ONE: RESTLESS EARTH Every year half a million earthquakes shake the planet. Most are minor, but 100 a year are so violent they release more energy than an atomic bomb, with a huge cost in human life

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