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Station Overview

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legend Overview at SVIK
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Network CH
Station Code SVIK
Station Description Visp Valgrid, Wallis, VS
Latitude (WGS84) 46.29897
Longitude (WGS84) 7.879105
Station altitude (CH1903) 645.0
running from 2023-06-23
...until now
Waveform Access open
Sensor Types Accelerometer
Geological Unit Alluvium (unconsolidated debris)
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 Fluvial geomorphology: alluvial slope, plain, cone
Ground type EC8 C
Ground type SIA D
Basin Information In a sedimentary basin with 1D resonance and significant lateral propagation basin
Reference Bergamo Paolo, Imtiaz A., Panzera F., Janusz P., Imperatori W. & Fäh D., "SITE CHARACTERIZATION REPORT SVISP (SVIS1), SVIK: Visp (VS), borehole stations", Swiss Seismological Service, ETH Zürich, 2022
Resonance Frequency (Hz) 1.07
Uncertainty Factor -
Vs 30 (m/s) 203
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 06
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 6.0 m
Distance to Building (m) -
Location Code 08
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 8.0 m
Distance to Building (m) -
Location Code 11
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 11.0 m
Distance to Building (m) -
Location Code 14
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 14.0 m
Distance to Building (m) -
Location Code 17
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 17.0 m
Distance to Building (m) -
Location Code 20
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description buried in the earth
sensor depth below station 20.0 m
Distance to Building (m) -
Location Code BT
Opening Date 23-06-2023
End Date -
Housing Class Borehole
Housing Description casing: plastic; casing length: 26m; inner diameter: 99mm; locking mechanism: glass bead; wet
sensor depth below station 30.0 m
Distance to Building (m) -
Location Code SF
Opening Date 23-06-2023
End Date -
Housing Class free field
Housing Description concrete pipe vault, diameter 60cm, closed with manhole cover, Foundation with anchor, sensor bolted to the Foundation
sensor depth below station 0.5 m
Distance to Building (m) -

Current Instrumentation

Location code 06
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code 08
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code 11
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code 14
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code 17
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code 20
On date 23-06-2023 00:00:00
Off date -
Sensor model Keller Pressure Sensor
Sensor manufacturer Keller
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HDH
Stream Noise (last week) HDH
Location code BT
On date 23-06-2023 00:00:00
Off date -
Sensor model HypoSensor ES-DH
Sensor manufacturer Kinemetrics
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HG1 , HG2 , HGZ
Stream Noise (last week) HG1 , HG2 , HGZ
Location code SF
On date 23-06-2023 00:00:00
Off date -
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Stream Noise (last week) HGE , HGN , HGZ

Site Characterization

channel group
 Empirical Amplification
CH.SVIK.BT.HG not available
CH.SVIK.SF.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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