Sara Auer, Geoscience Education Resource Developer at PRI next to the
Museum of the Earth's seismograph as it was reading today's earthquake.
Ever since the massive magnitude 8.8 quake that struck Chile on February 27th, a series of smaller quakes have been striking the surrounding areas. These quakes or "aftershocks" are expected in the wake of a quake of such magnitude as the fault zone readjusts itself. These aftershocks have been as large as a magnitude 7.2; similar in size to the recent Haiti earthquake! These aftershocks can continue for up to weeks or even months after the original quake, along the 250mile rupture zone. Though it may take years to evaluate the full effects of this quake, scientists have already estimated that the city of Concepción (proximally located to the initial quake) has moved 10 feet to the west!