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Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code OTTER
Station Description Otterbach, BS
Latitude (WGS84) 47.5778
Longitude (WGS84) 7.6038
Station altitude (CH1903) 298.0
running from 2004-12-05
...until now
Waveform Access open
Sensor Types Accelerometer
Geological Unit Alluvium (Holocene)
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 Plain (Rhine river)
Ground type EC8 B
Ground type SIA C
Basin Information Rhine basin
Reference Fäh Donat, Fritsche S., Poggi V. et al., "Determination of Site Information for Seismic Stations in Switzerland. Work Package 4: Pegasos Refinement Project", Swiss Seismological Service, ETH Zürich, 2009
Resonance Frequency (Hz) .53
Uncertainty Factor -
Vs 30 (m/s) 447
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 05-12-2004
End Date -
Housing Class Free field
Housing Description Free field on a concrete slab
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 10-03-2025 14:00:00
Off date -
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Stream Noise (last week) HGE , HGN , HGZ
Location code (none)
On date 23-11-2023 12:27:00
Off date 2024-08-30 00:00:00
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 24-06-2019 12:00:00
Off date 2023-11-23 12:27:00
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 23-11-2017 11:00:00
Off date 2019-06-24 12:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 22-09-2017 07:53:00
Off date 2017-11-23 11:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 16-06-2015 14:00:00
Off date 2017-09-22 07:53:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 24-08-2006 10:15:00
Off date 2015-06-16 14:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 05-12-2004 00:00:00
Off date 2006-08-24 10:15:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ

Site Characterization

channel group
 Empirical Amplification
CH.OTTER..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.

H/V pick image:
Authoritative Site Characterization Analysis details...
measurements nearby list...