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As Aftershocks Continue in Puerto Rico, USGS Supports Quake Recovery

A sequence of earthquakes in southwest Puerto Rico continues to affect people living there, with the largest recent aftershock a magnitude 5.2 on Jan...

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Earthquake Scenarios for Puerto Rico

Earthquakes are unsettling, destructive, and often tragic to the communities they affect. The USGS works diligently to help keep people safer by...

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Escenarios de terremotos en Puerto Rico

Los terremotos, como los ocurridos en Puerto Rico, pueden ser preocupantes, destructivos y en muchas ocasiones trágicos para las comunidades afectadas...

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USGS provides update for the National Seismic Hazard Model

USGS experts recently released a study that incorporates the latest earthquake science findings into an update of the National Seismic Hazard Model...

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In the Field with Kate Scharer

What’s a day in the life of a research geologist like?

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Extending Rupture History in Grand Tetons National Park (SSA News Release)

"19 November 2019–Hand-dug trenches around Leigh Lake in Grand Teton National Park in Wyoming reveal evidence for a previously unknown surface...

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All Systems Go for First Statewide Testing of ShakeAlert in the United States

Today, the U.S. Geological Survey and the State of California pressed the “go” button to allow the first-ever statewide public testing of the...

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What if the ShakeAlert Earthquake Early Warning System Had Been Operating During the M6.9 1989 Loma Prieta Earthquake?

How will ShakeAlert® likely perform now on a large earthquake impacting a major urban area? How much warning will you get? To answer this, let’s do a...

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The 2019 Great ShakeOut

When the ground starts to shake, what do you do?  Great ShakeOut 2019:  Drop, Cover, and Hold On!

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New Earthquake Science for Everyone Web Article

The goal of an earthquake early warning (EEW) system is to provide an alert to people and automatic systems after an earthquake begins but before the...

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USGS ShakeAlert Earthquake Early Warning System

Next week, USGS and the nation commemorate the 30th anniversary of one of the most destructive earthquake disasters in U.S. history – the 1989 Loma...

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New Earthquake Science for Everyone Web Article

Two of the first questions that come to mind for anyone who just felt an earthquake are, “Will there be another one?” and “Will it be larger?”.

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