Station Overview

Overview Location
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Network CH
Station Code WILA
Station Description Wila, ZH
Latitude (WGS84) 47.41483
Longitude (WGS84) 8.9077
Station altitude (CH1903) 853.0
running from 2000-01-12
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Conglomerate of limestone and dolomite of Miocene age (Tösswald layer - Tertiary)
Site Morphology Class T3
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 Molassic hill
Ground type EC8 B
Ground type SIA C
Basin Information not in a sedimentary basin with possible 2D/3D effects
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) 4.81
Uncertainty Factor -
Vs 30 (m/s) 466
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 12-01-2000
End Date -
Housing Class Urban free field
Housing Description Sensor in concrete garage as part of larger complex, 3m directly below free surface, 4m from nearest entrance. Sensor on 0.2m high concrete pedestal on concrete floor on weathered rock.
sensor depth below station 2.8 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 12-08-2020 14:00:00
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
Location code (none)
On date 12-08-2020 14:00:00
Off date -
Sensor model STS2_gen3
Sensor manufacturer Streckeisen
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels BHE , BHN , BHZ , HHE , HHN , HHZ
Stream Noise (last week) BHE , BHN , BHZ , HHE , HHN , HHZ
Location code (none)
On date 12-01-2000 00:00:00
Off date 2020-08-12 14:00:00
Waveform Access open
Sensor model STS2_gen3
Sensor manufacturer Streckeisen
Digitizer model HRD24
Digitizer manufacturer Nanometrics
Channels BHE , BHN , BHZ , HHE , HHN , HHZ

Site Characterization

channel group
Empirical Amplification
CH.WILA..HG not available
CH.WILA..HH 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...
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