Mission Areas

Global Seismographic Network

Programs L2 Landing Page

The Global Seismographic Network (GSN) is a permanent digital network of state-of-the-art seismological and geophysical sensors connected by a telecommunications network. The GSN provides, worldwide monitoring of the Earth, with over 150 modern seismic stations distributed globally.

Station Information and Operations

Station Information and Operations

Real-time information about the status of the GSN stations, real-time recordings.

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Seismic Waveforms - IRIS Data Management Center

Seismic Waveforms - IRIS Data Management Center

Access to seismic waveform data and tools for analysis.

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News

collage of scientists conducting science related to each mission are
January 7, 2015

While the number of large earthquakes fell to 12 in 2014, from 19 in 2013, several moderate temblors hit areas relatively new to seismicity, including Oklahoma and Kansas, according to the U.S. Geological Survey. Worldwide, 11 earthquakes reached magnitude 7.0-7.9 and one registered magnitude 8.2, in Iquique, Chile, on April 1.

USGS science for a changing world logo
January 8, 2014

Scientists from the U.S. Geological Survey and Virginia Tech will install a 20-station seismic network in the central Virginia area beginning Jan. 8. The new sensors – each about the size of a soda can – will provide information to help the researchers study the background seismicity in the area and any continuing aftershocks of the Aug. 23, 2011 earthquake near Louisa and Mineral, Va.

Filter Total Items: 3
USGS science for a changing world logo
March 4, 2016

Station Information and Operations

Zoom in on an area to view all seismic network operation stations on the interactive map.

USGS science for a changing world logo
March 4, 2016

Seismogram Displays

This interactive map displays seismographic activity. Click on a red seismogram icon or select a region from list list.

USGS science for a changing world logo
March 4, 2016

IRIS Data Management Center

Contains archived data from the Global Seismic Network.

Filter Total Items: 19
Relative azimuth inversion by way of damped maximum correlation estimates
Year Published: 2012

Relative azimuth inversion by way of damped maximum correlation estimates

Ringler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.
Relative azimuth inversion by way of damped maximum correlation estimates; 2012; Article; Journal; Computers & Geosciences; Ringler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.
Temporal variations in Global Seismic Stations ambient noise power levels
Year Published: 2010

Temporal variations in Global Seismic Stations ambient noise power levels

Ringler, A.T.; Gee, L.S.; Hutt, C.R.; McNamara, D.E.
Temporal variations in Global Seismic Stations ambient noise power levels; 2010; Article; Journal; Seismological Research Letters; Ringler, A.T.; Gee, L.S.; Hutt, C.R.; McNamara, D.E.
Experimental Investigations Regarding the Use of Sand as an Inhibitor of Air Convection in Deep Seismic Boreholes
Year Published: 1998

Experimental Investigations Regarding the Use of Sand as an Inhibitor of Air Convection in Deep Seismic Boreholes

INTRODUCTION Tilt has been the nemesis of horizontal long period seismology since its inception. Modern horizontal long period seismometers with their long natural periods are incredibly sensitive to tilt. They can sense tilts smaller than 10 -11 radians.

Holcomb, L. Gary; Sandoval, Leo; Hutt, Bob
Experimental Investigations Regarding the Use of Sand as an Inhibitor of Air Convection in Deep Seismic Boreholes; 1998; OFR; 98-362; Holcomb, L. Gary; Sandoval, Leo; Hutt, Bob
Taking the Earth's pulse
Year Published: 1997

Taking the Earth's pulse

Woodward, Robert L.; Benz, Harly M.; Brown, William M.
Taking the Earth's pulse; 1997; FS; 103-97; Woodward, Robert L.; Benz, Harly M.; Brown, William M., III
Observations and Modeling of Seismic Background Noise
Year Published: 1993

Observations and Modeling of Seismic Background Noise

Peterson, Jon R.
Observations and Modeling of Seismic Background Noise; 1993; OFR; 93-322; Peterson, Jon R.
An Evaluation of Installation Methods for STS-1 Seismometers
Year Published: 1992

An Evaluation of Installation Methods for STS-1 Seismometers

Holcomb, L. Gary; Hutt, Charles R.
An Evaluation of Installation Methods for STS-1 Seismometers; 1992; OFR; 92-302; Holcomb, L. Gary; Hutt, Charles R.
A C Language Implementation of the SRO (Murdock) Detector/Analyzer
Year Published: 1991

A C Language Implementation of the SRO (Murdock) Detector/Analyzer

Murdock, James N.; Halbert, Scott E.
A C Language Implementation of the SRO (Murdock) Detector/Analyzer; 1991; OFR; 87-158; Murdock, James N.; Halbert, Scott E.
A Numerical Study of Some Potential Sources of Error in Side-by-Side Seismometer Evaluations
Year Published: 1990

A Numerical Study of Some Potential Sources of Error in Side-by-Side Seismometer Evaluations

Holcomb, L. Gary
A Numerical Study of Some Potential Sources of Error in Side-by-Side Seismometer Evaluations; 1990; OFR; 90-406; Holcomb, L. Gary
A Direct Method for Calculating Instrument Noise Levels in Side-by-Side Seismometer Evaluations
Year Published: 1989

A Direct Method for Calculating Instrument Noise Levels in Side-by-Side Seismometer Evaluations

Holcomb, L. Gary
A Direct Method for Calculating Instrument Noise Levels in Side-by-Side Seismometer Evaluations; 1989; OFR; 89-214; Holcomb, L. Gary
IRIS/USGS Plans for Upgrading the Global Seismograph Network
Year Published: 1989

IRIS/USGS Plans for Upgrading the Global Seismograph Network

Peterson, Jon; Hutt, Charles R.
IRIS/USGS Plans for Upgrading the Global Seismograph Network; 1989; OFR; 89-471; Peterson, Jon; Hutt, Charles R.
Description and Preliminary Testing of the CDSN Seismic Sensor Systems
Year Published: 1985

Description and Preliminary Testing of the CDSN Seismic Sensor Systems

Peterson, Jon; Tilgner, Edwin E.
Description and Preliminary Testing of the CDSN Seismic Sensor Systems; 1985; OFR; 85-288; Peterson, Jon; Tilgner, Edwin E.
A New Event Detector Designed for the Seismic Research Observatories
Year Published: 1983

A New Event Detector Designed for the Seismic Research Observatories

Murdock, James N.; Hutt, Charles R.
A New Event Detector Designed for the Seismic Research Observatories; 1983; OFR; 83-785; Murdock, James N.; Hutt, Charles R.
Filter Total Items: 2
collage of scientists conducting science related to each mission are
January 7, 2015

While the number of large earthquakes fell to 12 in 2014, from 19 in 2013, several moderate temblors hit areas relatively new to seismicity, including Oklahoma and Kansas, according to the U.S. Geological Survey. Worldwide, 11 earthquakes reached magnitude 7.0-7.9 and one registered magnitude 8.2, in Iquique, Chile, on April 1.

USGS science for a changing world logo
January 8, 2014

Scientists from the U.S. Geological Survey and Virginia Tech will install a 20-station seismic network in the central Virginia area beginning Jan. 8. The new sensors – each about the size of a soda can – will provide information to help the researchers study the background seismicity in the area and any continuing aftershocks of the Aug. 23, 2011 earthquake near Louisa and Mineral, Va.