Station Overview

Overview Location not available
Picture Gallery details...
Network CH
Station Code EWZT3
Station Description Uitikon, ZH
Latitude (WGS84) 47.37578
Longitude (WGS84) 8.45506
Station altitude (CH1903) 646.0
running from 2009-08-27
...until 2010-07-30
Waveform Access open
Sensor Types Velocimeter
Geological Unit Moraine of Würm age (Pleistocene)
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 Top of a hill
Ground type EC8
Ground type SIA
Basin Information not in a sedimentary basin with possible 2D/3D effects
Reference
Resonance Frequency (Hz) -
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 27-08-2009
End Date 2010-07-30
Housing Class Urban free field
Housing Description Basement of a small concrete structure (access to water reservoir)
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

No open epochs

Location code (none)
On date 02-09-2009 00:00:00
Off date 2010-07-30 00:00:00
Waveform Access open
Sensor model LE-3D-1s
Sensor manufacturer Lennartz
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ
Location code (none)
On date 27-08-2009 00:00:00
Off date 2009-09-02 00:00:00
Waveform Access open
Sensor model LE-3DliteMkII
Sensor manufacturer Lennartz
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ

Site Characterization

channel group
Empirical Amplification
CH.EWZT3..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.

H/V pick image: not available
Authoritative Site Characterization Analysis -
measurements nearby list...