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Following the opening of the new southern fissure, tiltmeters transitioned to showing deflationary motion typical of ...
About 400 earthquakes have rumbled under Mount St. Helens since mid-July, the largest chain of shakes since the volcano finished erupting in 2008, the U.S. Geological Survey reported last week.
Even if two earthquakes have the same magnitude, their depths can make a big difference in how much damage they cause.
The US Geological Survey said it has detected an increase in seismic activity on Hawaii’s Big Island that is associated with unrest of the Kilauea volcano.
Hundreds of weak earthquakes concentrated beneath the summit of a volcano west of Anchorage, Alaska, indicates that an eruption could soon occur.
One of California's riskiest volcanoes has for decades been undergoing geological changes and seismic activity, which are sometimes a precursor to an eruption, but — thankfully — no ...
Earthquakes prompt concerns about possible volcano eruptions Two volcanoes on the same island in Alaska’s Aleutian chain were showing signs of unrest on Friday, rocked by seismic activity.
A series of rapidly occurring earthquakes beneath two volcanoes in Alaska's Aleutian Islands this week may mean at least one of them could erupt. But while scientists are seeing "significant ...
Seven tremors in a week have prompted a review of building standards, with engineering experts calling for quake-resistant ...
A spokesperson for US Geological Survey, the federal agency tasked with monitoring earthquakes and volcanoes, declined to comment on personnel matters in a statement to CNN, but added it ...
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