New map shows where damaging earthquakes are most likely to occur in US
Nearly 75% of the U.S. could experience damaging earthquake shaking, according to a recent U.S. Geological Survey-led team of more than 50 scientists and engineers.
Nearly 75% of the U.S. could experience damaging earthquake shaking, according to a recent U.S. Geological Survey-led team of more than 50 scientists and engineers.
Earth Sciences
Jan 16, 2024
0
911
Researchers have discovered a sea's worth of water locked within the sediment and rock of a lost volcanic plateau that's now deep in the Earth's crust. Revealed by a 3D seismic image, the water lies two miles under the ocean ...
Earth Sciences
Oct 8, 2023
0
524
A swarm of 91 earthquakes rattled the Yellowstone National Park region in just 24 hours on Thursday, according to the United States Geological Survey. The quakes trembled southwest of Yellowstone Lake between Heart Lake and ...
Earth Sciences
Sep 14, 2020
0
2147
With four years of data from 268 seismometers on the ocean floor and several hundred on land, researchers have found anomalies in the upper mantle below both ends of the Cascadia Subduction Zone. They may influence the location, ...
Earth Sciences
Jul 25, 2018
0
3462
Scientists combing through databases of earthquakes since the early 1990s have discovered a possible defining moment 10-15 seconds into an event that could signal a magnitude 7 or larger megaquake.
Earth Sciences
May 29, 2019
3
1380
In May 1997, a large earthquake shook the Kermadec Islands region in the South Pacific Ocean. A little over 20 years later, in September 2018, a second big earthquake hit the same location, its waves of seismic energy emanating ...
Earth Sciences
Jun 24, 2022
0
813
Scientists will take the tape measure to Mount Everest to determine whether a massive earthquake in Nepal really did knock an inch off the world's tallest peak.
Earth Sciences
Jan 24, 2017
7
316
Scientists have pinpointed a long-overlooked portion of the southern San Andreas Fault that they say could pose the most significant earthquake risk for the Greater Los Angeles area—and it's about 80 years overdue for release.
Earth Sciences
Mar 25, 2021
1
3471
A team of geologists, mineralogists and Earth and ocean scientists affiliated with institutions in Canada, the U.S. and France has discovered a 72-kilometer fault line on Canada's Vancouver Island. In their project, reported ...
A swarm of more than 141 earthquakes is rattling Yellowstone National Park, geologists said.
Earth Sciences
Jul 19, 2021
0
952
An earthquake (also known as a tremor or temblor) is the result of a sudden release of energy in the Earth's crust that creates seismic waves. Earthquakes are recorded with a seismometer, also known as a seismograph. The moment magnitude of an earthquake is conventionally reported, or the related and mostly obsolete Richter magnitude, with magnitude 3 or lower earthquakes being mostly imperceptible and magnitude 7 causing serious damage over large areas. Intensity of shaking is measured on the modified Mercalli scale.
At the Earth's surface, earthquakes manifest themselves by shaking and sometimes displacing the ground. When a large earthquake epicenter is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami. The shaking in earthquakes can also trigger landslides and occasionally volcanic activity.
In its most generic sense, the word earthquake is used to describe any seismic event — whether a natural phenomenon or an event caused by humans — that generates seismic waves. Earthquakes are caused mostly by rupture of geological faults, but also by volcanic activity, landslides, mine blasts, and nuclear experiments. An earthquake's point of initial rupture is called its focus or hypocenter. The term epicenter refers to the point at ground level directly above the hypocenter.
This text uses material from Wikipedia, licensed under CC BY-SA