Latest Issue of Science News


Haiti quake reveals previously unknown fault

Risk of future temblors uncertain

IGUAÇÚ FALLS, Brazil — The devastating quake that slammed Haiti on January 12 occurred on a previously unrecognized fault zone, report scientists who are still trying to determine the implications for the region’s long-term seismic risk.

The newly discovered fault hasn’t been officially named yet but is informally known as the Léogane fault, after one of the Haitian cities that sits directly atop it, study leader Eric Calais told Science News.

Just after the magnitude-7 temblor struck, scientists presumed that the epicenter of the quake was located on the well-known Enriquillo fault, says Calais, a geophysicist at Purdue University in West Lafayette, Ind. In fact, Calais notes, he and his colleagues published a paper in 2008 suggesting that the Enriquillo fault, which runs east-west through a long valley south of Port-au-Prince, Haiti, was ripe for a magnitude-7.2 quake.

Note: To comment, Science News subscribing members must now establish a separate login relationship with Disqus. Click the Disqus icon below, enter your e-mail and click “forgot password” to reset your password. You may also log into Disqus using Facebook, Twitter or Google.

This article is available only to subscribing members. Join SSP today or Log in.