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The Chilean GNSS Network; current status and progress toward early warning applications

J. C. Baez, F. Leyton, C. Troncoso, F. del Campo, Michael Bevis, C. Vigny, M. Moreno, M. Simons, E. Kendrick, H. Parra and F. Blume
The Chilean GNSS Network; current status and progress toward early warning applications
Seismological Research Letters (April 2018) 89 (4): 1546-1554

Abstract

Chile is one of the world's most seismically active regions and is therefore extensively studied by the earthquake sciences. The great length of the country hosts a variety of measurement systems allowing for the characterization of earthquake processes over a wide range of timescales and in different phases of the seismic cycle. Starting in the early 1990s, several research groups began to deploy continuously operating geodetic networks in Chile, forming the core of the modern network of Global Navigation Satellite Systems (GNSS) receivers used to monitor geodynamics from the southern tip of the Americas to the central Andes. Today, the Centro Sismologico Nacional (CSN) of the Universidad de Chile maintains and improves this network, increasing its coverage and spatial density while greatly reducing solution latency. We present the status of the GNSS network, its data streams, and the real-time analysis system used to support real-time modeling of earthquakes. The system takes 2 s, on average, to collect raw data, estimate positions, and stream results. Such low latency is essential to enabling early warning of earthquakes and tsunamis in Chile.


ISSN: 0895-0695
EISSN: 1938-2057
Serial Title: Seismological Research Letters
Serial Volume: 89
Serial Issue: 4
Title: The Chilean GNSS Network; current status and progress toward early warning applications
Affiliation: Universidad de Chile, Centro Sismologico Nacional, Santiago, Chile
Pages: 1546-1554
Published: 20180418
Text Language: English
Publisher: Seismological Society of America, El Cerrito, CA, United States
References: 47
Accession Number: 2018-055929
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table, sketch maps
S45°00'00" - S42°00'00", W75°00'00" - W72°00'00"
S34°00'00" - S29°00'00", W73°00'00" - W70°00'00"
Secondary Affiliation: Ohio State University, USA, United StatesEcole Normale Superieure, FRA, FranceGerman Research Centre for Geosciences, Helmholtz Centre Potsdam, DEU, GermanyCalifornia Institute of Technology, USA, United StatesInstituto Geografico Militar, CHL, ChileUNAVCO, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201830
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