The Global Seismographic Network is a permanent digital network of state-of-the-art seismological and geophysical sensors connected by a telecommunications network, serving as a multi-use scientific facility and societal resource for monitoring, research, and education.
Formed in partnership among the USGS, the National Science Foundation (NSF) and the Incorporated Research Institutions for Seismology (IRIS), the GSN provides near-uniform, worldwide monitoring of the Earth, with over 150 modern seismic stations distributed globally. GSN stations are operated by the USGS Albuquerque Seismological Laboratory, the IDA group at UC San Diego, and other affiliate organizations.
Data from the GSN are archived at the IRIS Data Management Center.
Station data and operational status.
Real-time seismograms from GSN stations
Albuquerque Seismological Laboratory
The mission of the Albuquerque Seismological Laboratory (ASL) is to support the operation and maintenance of seismic networks. As part of this mission, the ASL is responsible for the USGS-portion of the Global Seismographic Network (GSN) and the ANSS backbone network.
Waveform data from the GSN and ANSS backbone are transmitted from the station to the USGS National Earthquake Information Center in near-real time, where they are used for rapid earthquake response.
- Incorporated Research Institutions for Seismology (IRIS)
- National Science Foundation (NSF)
- University of California San Diego, IDA
- Comprehensive Test Ban Treaty Organization
- Federation of Digital Broad-Band Seismograph Networks (FDSN)
Photo Journal: Global Seismographic Network (GSN) Field Engineers Visit the Northernmost Town in the World
Achievements and prospects of global broadband seismographic networks after 30 years of continuous geophysical observations
Improved resolution across the Global Seismographic Network: A new era in low-frequency seismology
An evaluation of the timing accuracy of global and regional seismic stations and networks
Rayleigh wave amplitude uncertainty across the Global Seismographic Network and potential implications for global tomography
Rayleigh wave ellipticity measurement uncertainty across the IRIS/USGS and New China Digital Seismograph Networks
Detection and characterization of pulses in broadband seismometers
Upgrade of the New China Digital Seismograph Network
Uncertainty estimates in broadband seismometer sensitivities using microseisms
Estimating pole/zero errors in GSN-IRIS/USGS network calibration metadata
Some possible causes of and corrections for STS-1 response changes in the Global Seismographic Network
The Global Seismographic Network
Seismically observed seiching in the Panama Canal
Photo Journal: Global Seismographic Network (GSN) Field Engineers Visit the Northernmost Town in the WorldIn October 2022 GSN field engineers from the Albuquerque Seismic Lab visited the northernmost town in the world, Longyearbyen (Svalbard, Norway) on their way north to GSN station IU-KBS for a station upgrade. GSN station IU-KBS is located in Svalbard, a Norwegian archipelago.
Achievements and prospects of global broadband seismographic networks after 30 years of continuous geophysical observationsGlobal seismographic networks (GSNs) emerged during the late nineteenth and early twentieth centuries, facilitated by seminal international developments in theory, technology, instrumentation, and data exchange. The mid- to late-twentieth century saw the creation of the World-Wide Standardized Seismographic Network (1961) and International Deployment of Accelerometers (1976), which advanced globalAuthorsAdam T. Ringler, Robert E. Anthony, R. C. Aster, C. J. Ammon, S. Arrowsmith, Harley M. Benz, C. Ebeling, A. Frassetto, W. Y. Kim, Paula Koelemeijer, H. C. P. Lau, V. Lekic, J. P. Montagner, P. G. Richards, D. P. Schaff, M. Vallee, William L. Yeck
Improved resolution across the Global Seismographic Network: A new era in low-frequency seismologyThe Global Seismographic Network (GSN)—a global network of ≈150 very broadband stations—is used by researchers to study the free oscillations of the Earth (≈0.3–10 mHz) following large earthquakes. Normal‐mode observations can provide information about the radial density and anisotropic velocity structure of the Earth (including near the core–mantle boundary), but only when signal‐to‐noise ratiosAuthorsAdam T. Ringler, Robert E. Anthony, P. Thompson Davis, Carl Ebeling, K. Hafner, R. Mellors, S. Schneider, David C. Wilson
An evaluation of the timing accuracy of global and regional seismic stations and networksClock accuracy is a basic parameter of any seismic station and has become increasingly important for seismology as the community seeks to refine structures and dynamic processes of the Earth. In this study, we measure the arrival time differences of moderate repeating earthquakes with magnitude 5.0–5.9 in the time range of 1991–2017 at the same seismic stations by cross‐correlating their highly siAuthorsYing Yang, Xiaodong Song, Adam T. Ringler
Rayleigh wave amplitude uncertainty across the Global Seismographic Network and potential implications for global tomographyThe 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. In this study, we investigate the accuracy with which surface wavesAuthorsAdam T. Ringler, Robert E. Anthony, C. A. Dalton, David C. Wilson
Rayleigh wave ellipticity measurement uncertainty across the IRIS/USGS and New China Digital Seismograph NetworksLong-period Rayleigh wave horizontal to vertical amplitude (H/V) ratios at a station provide information about local earth structure that is complementary to phase velocity. However, a number of studies have observed that significant scatter appears in these measurements making it difficult to use H/V ratio measurements to resolve earth structure. Some of the scatter in these measurements has beenAuthorsAdam T. Ringler, David C. Wilson, Walter Zürn, Robert E. Anthony
Detection and characterization of pulses in broadband seismometersPulsing - caused either by mechanical or electrical glitches, or by microtilt local to a seismometer - can significantly compromise the long‐period noise performance of broadband seismometers. High‐fidelity long‐period recordings are needed for accurate calculation of quantities such as moment tensors, fault‐slip models, and normal‐mode measurements. Such pulses have long been recognized in acceleAuthorsDavid C. Wilson, Adam T. Ringler, Charles R. Hutt
Upgrade of the New China Digital Seismograph NetworkNo abstract available.AuthorsD. Anderson, J. Anderson, D. Ford, Lind S. Gee, G. Gyure, Charles R. Hutt, E. Kromer, B. Marshall, K. Persefield, Adam T. Ringler, M. Sharratt, Tyler Storm, David C. Wilson, D. Yang, Z. Zheng
Uncertainty estimates in broadband seismometer sensitivities using microseismsThe midband sensitivity of a seismic instrument is one of the fundamental parameters used in published station metadata. Any errors in this value can compromise amplitude estimates in otherwise high-quality data. To estimate an upper bound in the uncertainty of the midband sensitivity for modern broadband instruments, we compare daily microseism (4- to 8-s period) amplitude ratios between the vertAuthorsAdam T. Ringler, Tyler L. Storm, Lind S. Gee, Charles R. Hutt, David C. Wilson
Estimating pole/zero errors in GSN-IRIS/USGS network calibration metadataMapping the digital record of a seismograph into true ground motion requires the correction of the data by some description of the instrument's response. For the Global Seismographic Network (Butler et al., 2004), as well as many other networks, this instrument response is represented as a Laplace domain pole–zero model and published in the Standard for the Exchange of Earthquake Data (SEED) formaAuthorsA. T. Ringler, C. R. Hutt, R. Aster, H. Bolton, L.S. Gee, T. Storm
Some possible causes of and corrections for STS-1 response changes in the Global Seismographic NetworkThe Global Seismographic Network (GSN) (Figure 1) plays a key role in providing seismic data for global earthquake monitoring (e.g., Benz et al. 2005), earthquake science (e.g., Tsai et al. 2005), and studies of Earth structure (e.g., Dalton et al. 2008). One of the key GSN design goals is to "provide high fidelity digital recordings of all teleseismic ground motions (adequate to resolve at or neaAuthorsC. R. Hutt, A. T. Ringler
The Global Seismographic NetworkAuthorsLind S. Gee, William S. Leith
Seismically observed seiching in the Panama CanalA large portion of the seismic noise spectrum is dominated by water wave energy coupled into the solid Earth. Distinct mechanisms of water wave induced ground motions are distinguished by their spectral content. For example, cultural noise is generallyAuthorsD.E. McNamara, A. T. Ringler, C. R. Hutt, L.S. Gee