![]() Find out the origins of our home planet and some of the key ingredients that help make this blue speck in space a unique global ecosystem. This sweep of land and the quake that recently rocked it both come from the same source: a subterranean battle between tectonic plates.Įarth is the only planet known to maintain life. Here, the land juts out from North America in a thin curving spit that peters out into a series of islands, like beads falling off a string. The powerful earthquake struck off the southern coast of Perryville, on the Alaskan Peninsula. "It's an excitement to see that data." A shaky history "Every earthquake we're recording is going to teach us something new," Aderhold says. Additionally, comparing this quake to past events can help scientists better understand the region's potential to produce future shakes. The event was so strong, it sent out seismic waves that lit up detectors around the world, even disturbing groundwater levels in Washington County, Maryland.īecause the waves move differently through rocks with different temperatures and compositions, scientists can use these seismic rattles and shakes like planetary x-rays to map out Earth's innards. The quake now serves as a powerful reminder of the restlessness of our planet's surface-and it presents an exciting opportunity to peer deeper at our planet’s inner workings. ![]() She looked up to see her hanging stained glass lamp-a remnant from the house's past owners-slowly swinging side to side "like a pendulum," she says. ![]() This intense shaking had dissipated to gentle rocking by the time it reached Aderhold, an earthquake seismologist also at IRIS. "The ‘big one’ that we talk about in Southern California, it's like that," says Wendy Bohon, an earthquake geologist at the Incorporated Research Institutions for Seismology (IRIS), an assemblage of research universities that collects, curates, and distributes U.S. A magnitude 8.2 earthquake is nearly as large as the biggest earthquake thought possible along the San Andreas fault. But such a large event would be devastating elsewhere. It struck far from dense population centers and only caused rough seas.
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