Roquetes seismic station (EROQ)
Code: EROQ Name: Roquetes Latitude: 40.82320 N Longitude: 0.40883 E Height: 284 m Local depth: - m Owner: Observatori de l'Ebre |
| Soil features | ||||
|---|---|---|---|---|
| Lithology | Period | Vs30 (m/s) | Classe EC8 | F0 (Hz) |
| Detrital matherials and calcarenites | Upper Tertiary | - | - | - |
| Instrumentation by channels and periods | |||||
|---|---|---|---|---|---|
| Channels | Start date | Sensor type | Digitizer type | Instrumental response | |
| SHZ | 12/02/1987 | 01/11/2003 | Short period | - | - |
| SHE, SHN | 06/11/1991 | 01/11/2003 | Short period | - | - |
| HHZ, HHN, HHE | 19/01/2023 | - | Broadband velocimeter | 24 bits | [StationXML] |
The Roquetes seismic station (EROQ) was installed on February 12, 1987 by the National Geographic Institute (IGN) as part of the "National Seismic Network". It is located several kilometers apart of the old EBR seismic station. Collaboration between the Observatori de l'Ebre (OE) and the Servei Geològic de catalunya (SGC) allowed several subsequent improvements until November 1, 2003 when the station was definitively shut down.
Roquetes Seismic Station (EROQ)
The waveforms from this seismic station were recorded on thermal paper at the OE. Thanks to the collaboration between the OE and the ICGC, the entire series of thermal paper recordings of this station, preserved in the OE, have been scanned, in grayscale and with a density of 1200dpi.
Examples of seismograms from the EROQ seismic station
Seismic record of Roquetes (EROQ) analog seismic station for 20-21 May 1992. A record of a teleseism is observed at the top and at the bottom the record of a nuclear explosion in China.
Seismic record of Roquetes (EROQ) analog seismic station for 20-21 May 1992. A record of a teleseism is observed at the top and at the bottom the record of a nuclear explosion in China.
Seismic record of Roquetes (EROQ) analog seismic station for 20-21 May 1988. A swarm of earthquakes ocurred near la Seu d'Urgell is observed.