Strong-Motion Network
To monitor ground motion during large earthquakes seven neuralgic structures were equipped with Etna accelerographs. Recording is done in a triggered mode with sample rate of 200 Hz and sensitivity of 2g.
Operation of the equipment is done in cooperation of the Departamento de Ingenieria Civil, Universidad de Chile, Potsdam University and GFZ German Research Centre for Geosciences.
The following table is an overview over the sites:
Legend: SM - Strong motion accelerometer type, Epi - Kinemetrics EPI Sensor, CMG5 - Guralp CMG5 Sensor
| City | Site | Latitude | Longitude | Elevation | SM | Mode |
| PX01 | IPOC Station Victoria | -20.76359 | -69.88869 | 980 | Epi | Trigger/offline |
| PX02 | IPOC Station Quebrada Camarones | -18.96330 | -70.19814 | 990 | Epi | cont/online |
| PX03 | IPOC Station El Huarango | -20.40348 | -69.63087 | 990 | Epi | cont/online |
| PX04 | IPOC Station Caleta Buena | -19.90257 | -70.10765 | 794 | Epi | Trigger/offline |
| PX05 | IPOC Station Tocopilla | -21.93972 | -70.06123 | 1890 | Epi | cont/offline |
| HMBCX | IPOC Station Humberstone | -20.27822 | -69.88791 | 1152 | CMG5 | |
| MNMCX | IPOC Station Minimi | -19.13108 | -69.59553 | 2304 | CMG5 | |
| PSGCX | IPOC Station Pisagua | -19.59717 | -70.12305 | 966 | CMG5 | |
| PATCX | IPOC Station Patache | -20.82071 | -70.15288 | 830 | CMG5 | |
| Iquique | Chipana School | -20.25 | -70.12 | 106 | Epi | Trigger/offline |
| EL Loa | National Customs Service | -21.42 | -70.05 | 35 | Epi | Trigger/offline |
| Tocopilla | S.Q.M Port | -22.09 | -70.20 | 18 | Epi | Trigger/offline |
| San Pedro de Atacama | City Hall | -22.91 | -68.20 | 2448 | Epi | Trigger/offline |
| Michilla | Mine | -22.72 | -70.28 | 30 | Epi | Trigger/offline |
| Mejillones | Port | -23.07 | -70.38 | 4 | Epi | Trigger/offline |
| Antofagasta | Hospital | -23.59 | -70.38 | 35 | Epi | Trigger/offline |