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Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code SBRS
Station Description Brig, Spital, VS
Latitude (WGS84) 46.31693
Longitude (WGS84) 7.98139
Station altitude (CH1903) 671.0
running from 2012-09-03
...until 2022-09-19
Waveform Access open
Sensor Types Accelerometer
Geological Unit Alluvial fan
Site Morphology Class T1
T1: flat; T2: slope; T3: ridge and T4: steep ridge;
following Pessina and Fiorini (2014) A GIS procedure for fast topographic characterization of seismic recording stations, Soil Dynamics and Earthquake Engineering, 63, p248-258
Site Morphology Description Centre of the Rhone alluvial plain
Ground type EC8 B
Ground type SIA C
Basin Information Rhone basin, interface at fundamental frequency at 200 m depth
Reference Michel Clotaire, Burjanek J., Roten D., Poggi V., Cauzzi C., Fäh D., "Brig - Spital (SBRS) Site characterization report", Swiss Seismological Service, ETH Zürich, 2013
Resonance Frequency (Hz) 1.37
Uncertainty Factor -
Vs 30 (m/s) 386
Location Map


Federal Office of Topograpy: National Map 1:25‘000
Topography Map


Federal Office of Topograpy: DHM25: Digital Height Model 1:25000
Geology Map

Federal Office of Topograpy: Geological map of Switzerland 1:500‘000

Sensor locations

Location Code (none)
Opening Date 03-09-2012
End Date 2022-09-19
Housing Class Urban free field
Housing Description SED small vault
sensor depth below station 0.5 m
Distance to Building (m) 8

Current Instrumentation

No open epochs

Location code (none)
On date 20-02-2020 18:00:00
Off date 2022-09-19 14:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 08-02-2017 12:00:00
Off date 2020-02-20 18:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 03-09-2012 00:00:00
Off date 2017-02-08 12:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ

Site Characterization

channel group
 Empirical Amplification
CH.SBRS..HG not available

Obtained from spectral modeling of small earthquakes with constant update.

  • Top: Fourier amplification with elastic (dashed line) and anelastic (solid line) amplification functions;
  • Centre: 5% damped response spectra amplification (anelastic);
  • Bottom: Number of recordings used.

See Edwards et al. (2013), Determination of Site Amplification from Regional Seismicity: Application to the Swiss National Seismic Networks. Seismological Research Letters, 84(4), 611–621.

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Authoritative Site Characterization Analysis details...
measurements nearby list...