Real-time Seismogram Displays - USGS Earthquake Hazards Program
These seismogram displays depict ground motion recorded by seismograph stations in real-time, updated every few minutes. Each plot represents 24 hours of data from one station.
About the Seismograms - USGS Earthquake Hazards Program
Typically, one can recognize the arrival of different wave types: P (the fastest traveling waves), S (shear waves), and surface waves. On these seismograms you may see local earthquakes in Northern California and earthquakes elsewhere in the world.
Earthquake Topics
Explores seismic waves, the ability of scientists to predict the likelihood and severity of earthquakes at specific locations, the difference between magnitude and intensity, the occurrence of earthquakes along patches of planar faults, and the potential damage caused by earthquakes such as landslides, liquefaction, or structural failure.
Heliplots - USGS Earthquake Hazards Program
1 天前 · These data update automatically every 30 minutes Last update: November 20, 2024 23:31:25 UTC Seismograms may take several moments to load. Click on a plot to see larger image.
Examples - USGS Earthquake Hazards Program
Wind can produce low-amplitude seismic waves or "microseisms" in the earth through the action of trees, which transfer wind-generated forces into the ground through their roots. (Ocean waves also generate microseisms by the pounding of the surf.)
Seismograms | All Stations - Past 24 hours - USGS Earthquake …
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
For Teachers - USGS Earthquake Hazards Program
About Seismic Waves: Seismic waves are generated at every point along the fault as that portion of the fault ruptures. The thin lines in the annotations show the P- and S-waves generated early in the earthquake (e.g., at the epicenter).
Real-time Spectrogram Displays - USGS Earthquake Hazards …
These spectrogram displays depict the frequency content of a seismogram as it changes with time, updated once per minute. Each plot represents 24 hours of data from one station.
Search Earthquake Catalog
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards
Latest Earthquakes
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