The Seismic Network of Chile

Abstract

Research Article| February 14, 2018 The Seismic Network of Chile S. Barrientos; S. Barrientos aFacultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Beauchef 850, Santiago, Chile, sbarrien@csn.uchile.cl Search for other works by this author on: GSW Google Scholar National Seismological Center (CSN) Team National Seismological Center (CSN) Team Search for other works by this author on: GSW Google Scholar Author and Article Information S. Barrientos aFacultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Beauchef 850, Santiago, Chile, sbarrien@csn.uchile.cl National Seismological Center (CSN) Team Publisher: Seismological Society of America First Online: 14 Feb 2018 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2018) 89 (2A): 467–474. https://doi.org/10.1785/0220160195 Article history First Online: 14 Feb 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation S. Barrientos, National Seismological Center (CSN) Team; The Seismic Network of Chile. Seismological Research Letters 2018;; 89 (2A): 467–474. doi: https://doi.org/10.1785/0220160195 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT Chile is frequently affected by large and potentially tsunamigenic and damaging earthquakes as a result of rapid convergence of the Nazca plate beneath the South America plate. Ten M 8 or larger earthquakes have occurred along the Chilean coast in the past century, the largest of which was the 1960 M 9.5 Valdivia earthquake. After the 2010 M 8.8 Maule earthquake, Chile began installing a modern real‐time network of digital broadband/strong‐motion and Global Positioning System (GPS) stations to better prepare for future and expected large damaging earthquakes. The network was designed to provide fast and accurate estimates of earthquake source parameters of potentially devastating earthquakes for emergency response applications, and was also capable of comprehensive characterization of Chilean seismicity necessary for long‐term hazard assessment and mitigation activities. Beginning in 2013, the National Seismological Center (CSN) of the University of Chile was mandated by the Chilean government to implement a network of 65 permanent real‐time broadband and strong‐motion stations and 130 Global Navigation Satellite Systems (GNSS) monuments and receivers. These integrated sensor systems were designed to provide accurate automatic earthquake locations and magnitudes necessary for tsunami warning and impact assessment. In near‐real‐time applications, the GPS stations become critical for determination of fault finiteness of M∼7 or larger earthquakes. Operations of these systems also provide new insights into long‐term deformation and associated spatiotemporal variations in seismicity, which are necessary in long‐term earthquake hazards assessment and mitigation. In addition to the real‐time system described above, 297 strong‐motion offline instruments complement the network for engineering purposes. Broadband data in real time are publicly available through the Incorporated Research Institutions for Seismology Data Management Center (IRIS‐DMC) under networks C and C1. Strong‐motion data for recorded accelerations larger than 2%g are available through the CSN webpage. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.