mega-quake

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.
Southern California's most recent mega-quake was in 1857, also estimated to be magnitude 7.8, when the area was sparsely populated.
However, I am very glad we're updating our infrastructure, especially bridges, with the impending mega-quake..."
While unlikely, the so-called "mega-quake" could cost over $289 billion in repairs.
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."
However, the mega-quake they had been fearing may still be yet to happen, said Paul Earle, a seismologist at the U.S.
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".
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.
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.
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.
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.