Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code TRULL
Station Description Truellikon, ZH
Latitude (WGS84) 47.6487
Longitude (WGS84) 8.68161
Station altitude (CH1903) 525.0
running from 2003-08-29
...until now
Waveform Access open
Sensor Types Accelerometer 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) 3.05
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 29-08-2003
End Date -
Housing Class Underground shelter
Housing Description Sensor in small concrete structure, 15m directly below free surface, 15m from nearest entrance. Sensor placed directly on concrete floor on rock. Water reservoir.
sensor depth below station 15.0 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 17-05-2023 09:00:00
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 17-05-2023 09:00:00
Off date -
Sensor model STS2_gen2
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 07-11-2019 16:50:00
Off date 2023-05-17 09:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels HGE , HGN , HGZ
Location code (none)
On date 07-11-2019 16:50:00
Off date 2023-05-17 09:00:00
Waveform Access open
Sensor model STS2_gen2
Sensor manufacturer Streckeisen
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels BHE , BHN , BHZ , HHE , HHN , HHZ
Location code (none)
On date 18-07-2019 08:00:00
Off date 2019-11-07 16:50:00
Waveform Access open
Sensor model LE-3D-5s
Sensor manufacturer Lennartz
Digitizer model Centaur
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ
Location code (none)
On date 20-02-2004 00:00:00
Off date 2019-07-18 08:00:00
Waveform Access open
Sensor model LE-3D-5s
Sensor manufacturer Lennartz
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ
Location code (none)
On date 08-09-2003 00:00:00
Off date 2004-02-20 00:00:00
Waveform Access open
Sensor model LE-3D-5s
Sensor manufacturer Lennartz
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ
Location code (none)
On date 29-08-2003 12:00:00
Off date 2003-09-08 00:00:00
Waveform Access open
Sensor model LE-3D-5s
Sensor manufacturer Lennartz
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels EHE , EHN , EHZ

Site Characterization

channel group
Empirical Amplification
CH.TRULL..HH not available
CH.TRULL..EH not available
CH.TRULL..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.

H/V pick image:
Authoritative Site Characterization Analysis -
measurements nearby list...