Search Earthquake Catalog Time Zone. Display event dates and times using this time zone.

2022年3月9日 · USGS scientists and our partners recently revealed the latest National Seismic Hazard Model, showing that nearly 75% of the United States could experience a damaging earthquake, emphasizing seismic hazards span a significant part of the country.

USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards

The design code developers first decide how USGS earthquake hazard information should be applied in design practice. Then, the USGS calculates values of seismic design parameters based on USGS hazard values and in accordance with design code procedures.

The National Seismic Hazard Model (NSHM) relies on updated data sets, models, maps, source code, and published documentation of seismic hazard assessments. The following archive includes links to those resources.

The earthquake ground motions of this group of seismic design documents are based on the 2018 USGS National Seismic Hazard Model (NSHM) for the conterminous United States (48 states), the 2012 NSHMs for Guam & the Northern Mariana Islands and American Samoa, the 2007 NSHM for Alaska, the 2003 NSHM for Puerto Rico & …

2022年9月19日 · The Latest Earthquake web application displays information in real-time and near-real-time for magnitude 2.5+ earthquakes in the U.S. and magnitude 4.5+ earthquakes around the world. This interactive tool allows you to view a list and map of earthquakes and to fine-tune the display with various settings.

The Global Seismographic Network (GSN) is a multiuse, globally distributed seismic network used by seismologists, to both characterize earthquakes and study the Earth’s interior. Most stations in the network have two collocated broadband seismometers, which enable network operators to identify potential metadata and sensor issues.

2019年11月7日 · Web Services for real-time and catalog earthquakes, hazard maps, slabs, and more. Earthquakes. Real-time Data Feeds; Preliminary Determination of Epicenters (PDE) Seismic Waveforms. Real-time: Seismogram Displays Worldwide; GSN Stations; ANSS Backbone Stations; Netquake Volunteer Stations; Spectrograms

2025年3月30日 · The USGS monitors and reports on earthquakes, assesses earthquake impacts and hazards, and conducts targeted research on the causes and effects of earthquakes. We undertake these activities as part of the larger National Earthquake Hazards Reduction Program (NEHRP), a four-agency partnership established by Congress.