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.
Zoom in on an area to view all seismic network operation stations on the interactive map.
This interactive map displays seismographic activity. Click on a red seismogram icon or select a region from list list.
Relative azimuth inversion by way of damped maximum correlation estimatesRingler, A.T.; Edwards, J.D.; Hutt, C.R.; Shelly, F.
Temporal variations in Global Seismic Stations ambient noise power levelsRingler, 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
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
Observations and Modeling of Seismic Background NoisePeterson, Jon R.
An Evaluation of Installation Methods for STS-1 SeismometersHolcomb, L. Gary; Hutt, Charles R.
A C Language Implementation of the SRO (Murdock) Detector/AnalyzerMurdock, James N.; Halbert, Scott E.
A Numerical Study of Some Potential Sources of Error in Side-by-Side Seismometer EvaluationsHolcomb, L. Gary
A Direct Method for Calculating Instrument Noise Levels in Side-by-Side Seismometer EvaluationsHolcomb, L. Gary
IRIS/USGS Plans for Upgrading the Global Seismograph NetworkPeterson, Jon; Hutt, Charles R.
Description and Preliminary Testing of the CDSN Seismic Sensor SystemsPeterson, Jon; Tilgner, Edwin E.
A New Event Detector Designed for the Seismic Research ObservatoriesMurdock, James N.; Hutt, Charles R.
Budget Focuses on Core USGS Science and Efficiency
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.
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.