Station Overview

Overview Location not available
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Network CH
Station Code EWZT1
Station Description Zuerich, Friedhof Sihlfeld, ZH
Latitude (WGS84) 47.37282
Longitude (WGS84) 8.50873
Station altitude (CH1903) 410.0
running from 2009-08-26
...until 2010-07-30
Waveform Access open
Sensor Types Accelerometer
Geological Unit Fluvial deposits
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 Limmat alluvial plain
Ground type EC8
Ground type SIA
Basin Information Limmat basin
Resonance Frequency (Hz) 2.91
Uncertainty Factor -
Vs 30 (m/s) -
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 26-08-2009
End Date 2010-07-30
Housing Class Building
Housing Description Basement of a concrete building (concrete slab)
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

No open epochs

Location code (none)
On date 26-08-2009 00:00:00
Off date 2010-07-30 00:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ

Site Characterization

channel group
Empirical Amplification
CH.EWZT1..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 -
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