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Station Overview

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legend Overview at STIEG
Overview Location
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Network CH
Station Code STIEG
Station Description Oberembrach, Stiegenhof, ZH
Latitude (WGS84) 47.4978
Longitude (WGS84) 8.65405
Station altitude (CH1903) 637.0
running from 2012-12-11
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Siltstone of Miocene age (USM)
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 Plateau
Ground type EC8 B
Ground type SIA C
Basin Information not in a sedimentary basin with possible 2D/3D effects
Reference Poggi Valerio, Michel C., Fäh D., "Stiegenhof - Oberembrach (STIEG) Report on site characterization", Swiss Seismological Service, ETH Zürich, 2013
Resonance Frequency (Hz) 4.42
Uncertainty Factor -
Vs 30 (m/s) 463
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 BT
Opening Date 11-12-2012
End Date -
Housing Class Borehole
Housing Description Casing: steel; casing length: 130m; diameter 8.4cm (inner), 10.16 cm (outer); locking mechanism: Lennartz hole lock; dry; <1deg off vertical; emplacement depth 123m; Sensor cable with SED custom built strain relief at borehole head.
sensor depth below station 123.0 m
Distance to Building (m) -
Location Code SF
Opening Date 11-12-2012
End Date -
Housing Class Free field
Housing Description SED small vault
sensor depth below station 0.5 m
Distance to Building (m) -

Current Instrumentation

Location code BT
On date 11-12-2012 00:00:00
Off date -
Sensor model LE-3D-BH
Sensor manufacturer Lennartz
Digitizer model Q330Splus
Digitizer manufacturer Quanterra
Channels EH2 , EH3 , EHZ
Stream Noise (last week) EH2 , EH3 , EHZ
Location code SF
On date 02-03-2023 09:45:00
Off date -
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Q330Splus
Digitizer manufacturer Quanterra
Channels HGE , HGN , HGZ
Stream Noise (last week) HGE , HGN , HGZ
Location code SF
On date 11-12-2012 00:00:00
Off date 2023-03-02 09:45:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Q330Splus
Digitizer manufacturer Quanterra
Channels HGE , HGN , HGZ

Site Characterization

channel group
 Empirical Amplification
CH.STIEG.SF.HG not available
CH.STIEG.BT.EH 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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