Crustal Seismicity along for the Southern Andes Volcanic Zone (LOFS)


The Liquiñe-Ofqui fault system (LOFS) in south-central Chile provides a natural laboratory to assess the interplay between magma/hydrothermal fluid flow and crustal deformation. Understanding these processes is of paramount importance for geothermal energy exploration and seismic hazard assessment. We deployed a dense seismic network (Sielfeld et al., 2019) at the northern termination of the LOFS in south-central Chile (~38°S) between 2014 March and 2015 June. The main aim was to better understand the significance and implications of seismic activity in relation to geological information such as the complex fault-fracture network, volcanoes, and the stress field estimated from geological data. As a result, the network was designed to monitor the northern segment of the LOFS on a more regional scale rather than concentration on the activity of one volcano. The network covered a ~200‐km‐long section of the Southern Volcanic Zone, including several Holocene stratovolcanoes (Callaqui, Copahue, Caviahue Caldera, Tolhuaca, Lonquimay, Llaima, Sierra Nevada, Sollipulli, Villarrica, Quetrupillán, Lanín (La), and Mocho‐Choshuenco). Waveform data are open and available under network code 3H from the GEOFON data centre under license CC BY 4.0.

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Metadata Access
Creator Lange, Dietrich (Geomar, Kiel, Germany); Cembrano, Jose (Pontificia Universidad Católica de Chile, Santiago, Chile); Sielfeld, Gerd (Pontificia Universidad Católica de Chile, Santiago, Chile)
Publisher GFZ Data Services
Contributor Deutsches GeoForschungsZentrum GFZ; GEOFON Data Centre; geofon(at); Geophysical Instrument Pool Potsdam (GIPP); GEOMAR Helmholtz Centre for Ocean Research Kiel, 24148 Kiel, Germany; Pontificia Universidad Católica de Chile, Santiago, Chile
Publication Year 2019
Funding Reference Deutsches GeoForschungsZentrum GFZ; GEOMAR Helmholtz Centre for Ocean Research Kiel
Rights CC BY 4.0
OpenAccess true
Contact geofon(at)
Language English
Resource Type Seismic Network
Format SEED data
Size ~650G
Discipline Seismology
Spatial Coverage (-72.200W, -40.000S, -71.000E, -38.000N); South-Central Chile