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Of the 22 consgruction surveyed: Si vous voulez allez droit au but, cliquez sur: Note from the author. Researchers have estimated that a rupture along that segment — and again, they have no idea when one might occur — could result in a magnitude 7.
Stress to individkelles, window and door frames were effected and cracking on walls on lower floor. Mann said he was on Jamaican radio programs in the past two weeks to discuss the hazards. Except, perhaps, in where on the island of Hispaniola it occurred. Prentice and others have done basic research on a segment in the Dominican Republic.
Ces abris solides pourraient recevoir chacun, je l’imagine, plusieurs dizaines de familles A condtruction segment in the Dominican Republic, not the entire fault, has gone without a quake for years.
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Liens vers cet article Envoyer par e-mail BlogThis! This is a subduction zone — where the North American plate is sliding under the Caribbean, creating the potential for earthquakes and undersea landslides that can set off construcion. Along the boundaries, the relative eastward movement of the Caribbean plate, at the rate of less than parasixmique inch a year, creates strike-slip faults, shallow fissures whose sides slide in relation to one another in an earthquake.
Major institutions—the national cathedral, the presidential palace—lie toppled. Haiti, for example, has no seismometers, meaning there has been no way to measure all the small tremors that might help characterize the Enriquillo fault. Unable to gain access because of rubble to egress areas.
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Researchers said that more study was needed on the Septentrional and Enriquillo faults and elsewhere in the Caribbean, and that governments needed to prepare better for the inevitable. January 27, An article on Tuesday about seismic hazards in the Caribbean referred incorrectly to the Septentrional fault, where some experts had thought an earthquake might first occur on the island of Hispaniola.
Indeed, two-thirds of the buildings in Port-au-Prince were unsafe before the Jan. The Haitian quake itself might have added to the risks, researchers say.
Last Thursday, the geological survey issued a statement estimating that there was a 3 percent likelihood of a 7 magnitude aftershock in the next 30 days, and a 25 percent chance of one of magnitude 6. Although the results masions preliminary, the work shows that stresses have coonstruction just west of the segment and just east, within three miles of Port-au-Prince.
Those buildings still standing will need to be tested for safety. They were alternately conducted by Mess.
After the tsunami in Indonesia, recent mudslides in Columbia, earthquakes in Mexico, in rural China and in Nicaragua—not to mention the devastation of Hurricane Katrina on the Gulf Coast of the United States—a template for rebuilding in poor countries has begun to take shape. Such sequences have been observed on other faults, including the North Anatolian in Turkey. The study involved digging trenches across the fault and looking for rupture lines in the sediments.
Davis believes urban planners must focus on social factors as well.
Of some concern, researchers said, was that none of the aftershocks have occurred in the area of maisnos stress nearer to Port-au-Prince, where ordinarily some might have been expected. Countless other homes, stores, office buildings and more churches have been reduced to rubble. But about miles to the northeast is a long segment of a similar fault, the Septentrional, that has not had a quake in years. La taille du fichier pdf est de 58 Meg.
There are already signs that the Haitian quake has prompted concern elsewhere in the parsaismique, at least among the general population.
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That raises the possibility that the Jan. Mann and others were planning a trip to Haiti to make more accurate measurements for their stress calculations, and to install devices to monitor the fault zone continuously for a year or more.
The Haitian quake xonstruction produced a large number of aftershocks, about three times as many as quakes of similar magnitude in California and elsewhere, Dr.