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This graph shows the earthquakes that have been detected on the edge of the Hanford Reach National Monument starting Sept. 21. The largest, those with magnitude 2.0 to 3.0 are shown in green.
The Pacific Northwest Seismic Network, or PNSN, collects and studies ground motions from about 400 seismometers in the U.S. states of Oregon and Washington.PNSN monitors volcanic and tectonic activity, gives advice and information to the public and policy makers, and works to mitigate earthquake hazard.
Multiple earthquakes of magnitude 3.0 and higher struck off the west coast in the Pacific Ocean in the early morning hours of Friday, Oct. 18., according to the Pacific Northwest Seismic Center.
In 2022, two people died after a ma gnitude-6.4 earthquake struck offshore near Ferndale, not far from the recent quake. That earthquake caused close to $100 million in damage in the most recent ...
Intraslab (Benioff zone) earthquakes, such as the M 6.7 2001 Nisqually earthquake, caused by slippage or fracturing on a small part of the subducting plate at a depth of around 50 km (31 miles). Relatively shallow crustal earthquakes, generally less than 25 km (16 miles) deep, caused by stresses and faulting in the near-surface crustal structures.
Logo of the ANSS. The Advanced National Seismic System (ANSS) is a collaboration of the United States Geological Survey (USGS) and regional, state, and academic partners that collects and analyzes data on significant earthquakes to provide near real-time (generally within 10 to 30 minutes [1]) information to emergency responders and officials, the news media, and the public. [2]
A large earthquake there can be expected at least once every 450-500 years, on average. ... the director of the Pacific Northwest Seismic Network and a professor at the University of Washington.
Harold Tobin, a co-author of the paper and the director of the Pacific Northwest Seismic Network, said that although the data will help fine-tune projections, it doesn’t change a tough-to ...