The Iquique Local Network (ILN), a temporal network of broadband and short period seismic stations has been operating in Northern Chile since 2009. The aim of this installation was to locally densify the permanent seismic installation of the Integrated Plate Boundary Observatory in Chile (IPOC), with the main goal to decrease the magnitude of detected earthquake, to improve the hypocentral location accuracy, to allow a more accurate investigation of seismic source parameters, and to analyse proposed seismogenic structures of the Northern Chile seismic gap. The network setup evolved with time, with different geometries at different installation phases, aiming to study different seismicity features. In the first phase, started in 2009 and operational since 2010 until autumn 2013, the network had a sparse configuration, targeting a broad region extending from 19.5° S in the North to approximately 21.3° S South of Iquique. In the following stage, operational until fall 2017, most broadband stations were rearranged into a small aperture seismic array (PicArray) close to the village of Pica, to monitor with array techniques the shallow seismicity at the plate interfacer, intermediate and deep focus seismicity. These data are freely available under the Creative Commons Attribution 4.0 International Licence (CC BY 4.0) at the GEOFON data centre under network code IQ.
* Description is taken from seismic metadata, and may not match the preferred title for citations.
Geophysical Instrument Pool Potsdam (GIPP), IPOC (http://www.ipoc-network.org)
Network KML file:
To retrieve waveform data and metadata (including instrument responses) for this and
other seismic networks,
see here.
Extended Network Information for network IQ
[hide/show]
Creator(s):
Cesca, Simone
a; Sobiesiak, Monika
b; Tassara, Arturo
c; Olcay, Manuel
c; Günther, Erwin
a; Mikulla, Stefan
a; Dahm, Torsten
a a GFZ German Research Centre for Geosciences, Potsdam, Germany, b Polish Academy of Sciences, Krakow, Poland, c Universidad Nacional Arturo Prat, Iquique, Chile
Cesca, S., Sobiesiak, M., Tassara, C., Olcay, M., Günther, E., Mikulla, S., Dahm, T. (2018). The Iquique Local Network and PicArray. Scientific Technical Report STR - Data; 18/02. doi:10.2312/GFZ.b103-18022
Cesca, S.; Grigoli, F.; Heimann, S.; Dahm, T.; Kriegerowski, M.; Sobiesiak, M.; Tassara, C.; Olcay, M. (2016). The Mw 8.1 2014 Iquique, Chile, seismic sequence: a tale of foreshocks and aftershocks. Geophysical Journal International, 204, 3, pp. 1766-1780. doi:10.1093/gji/ggv544
Schaller, T.; Andersen, J.; Götze, H.-J.; Koproch, N.; Schmidt, S.; Sobiesiak, M.; Splettstößer, S. (2015). Segmentation of the Andean margin by isostatic models and gradients. Journal of South American Earth Sciences, 59, pp. 69-85. doi:10.1016/j.jsames.2015.01.008
Schurr, B.; Asch, G.; Hainzl, S.; Bedford, J.; Hoechner, A.; Palo, M.; Wang, R.; Moreno, M.; Bartsch, M.; Zhang, Y.; Oncken, O.; Tilmann, F.; Dahm, T.; Victor, P.; Barrientos, S.; Vilotte, J. (2014). Gradual unlocking of plate boundary controlled initiation of the 2014 Iquique earthquake. Nature, 512, pp. 299-302. doi:10.1038/nature13681
GFZ German Research Centre for Geosciences; Institut des Sciences de l’Univers-Centre National de la Recherche CNRS-INSU (2006). IPOC Seismic Network. Integrated Plate boundary Observatory Chile - IPOC. doi:10.14470/PK615318