Earthquake Hazards
News
A Fresh Look at Old Data Sheds Light on Central U.S. Quake Origins and Potential
Small variations in the density of the earth’s crust—undetectable to humans without sensitive instruments—influence where earthquakes may occur in the central United States. These new findings from the U.S. Geological Survey, published today in Nature Communications, may allow scientists to map where future seismicity in the center of the country is most likely.
Community Announcement: USGS Ground Motion Study in the Walnut Creek/Concord Area Looking for Volunteers
The U. S. Geological Survey is seeking volunteers to host temporary seismic stations in the Walnut Creek/Pleasant Hill/Concord California area. Volunteers will be assisting with a new ground motion study that will begin in March 2017.
Hazard a Guess? The riskiest science quiz you will ever take!
What is causing most of the induced earthquakes (aka man-made earthquakes) we’ve seen recently in the central United States?
Some Early 20th Century Earthquakes in Los Angeles Area Might Have Been Man-Made
A new study from the USGS suggests that some early 20th century earthquakes in southern California might have been induced (man-made) by past practices that were used by the oil and gas industry.
Magnitude 6.6 Earthquake in Italy
A magnitude 6.6 earthquake struck Italy on October 30, 2016 at 06:40:19 UTC (7:40 am local time). This is reportedly the largest earthquake in Italy since the magnitude 6.9 Irpinia earthquake struck southern Italy in 1980.
Magnitude 6.1 and 5.5 Italy Earthquakes
A magnitude 6.1 earthquake struck Italy on October 26, 2016 at 19:18:08 UTC (9:18 pm local). A magnitude 5.5 earthquake struck earlier at 17:10:37 UTC. Numerous smaller aftershocks have also occurred.
Wastewater Disposal Likely Induced February 2016 Magnitude 5.1 Oklahoma Earthquake
Distant wastewater disposal wells likely induced the third largest earthquake in recent Oklahoma record, the Feb. 13, 2016, magnitude 5.1 event roughly 32 kilometers northwest of Fairview, Oklahoma. These findings from the U.S. Geological Survey are available in the online edition of Geophysical Research Letters.
Hazard a Guess? The riskiest science quiz you will ever take!
True or false? The same size earthquake will cause damage over a larger area in the West than the East.
EarthWord–Subduction
It’s not flirting for submarines, but this week’s EarthWord does feature the ocean...
Possible Explosion of Magnitude 5.3 in North Korea
A possible explosion of magnitude 5.3 occurred in North Korea on September 9, 2016 at 00:30:01 UTC (9:00 am local time).
Uncharted: Exploring one of America’s fastest faults
A team of USGS scientists spent 10 days in the wilderness, exploring one of the fastest-moving faults in America
Photo Opportunity: Scientists Prepare for Seismic Study in East Bay
MEDIA ADVISORY: Faculty and students from California State University, East Bay, U.S. Geological Survey scientists, and community volunteers are conducting an experiment to visualize the subsurface in and around the Hayward Fault and measure how the ground in different neighborhoods responds to earthquake shaking.