Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code BOBI
Station Description Boebikon, Wasserreservoir Allmend, AG
Latitude (WGS84) 47.54631
Longitude (WGS84) 8.33985
Station altitude (CH1903) 570.0
running from 2013-12-20
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Fluvial glacial sediments on sandstones and marls of Miocene age (Upper Freshwater Molasse - Tertiary)
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/plateau
Ground type EC8 B
Ground type SIA E
Basin Information not in a sedimentary basin with possible 2D/3D effects
Reference Poggi Valerio, Fäh D., "Böbikon, Switzerland (BOBI) Report on site characterization", Swiss Seismological Service, ETH Zürich, 2014
Resonance Frequency (Hz) 1.87
Uncertainty Factor -
Vs 30 (m/s) 590
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 20-12-2013
End Date -
Housing Class Borehole
Housing Description Casing: steel; casing length 158m; diameter 8.4cm (inner), 10.16 cm (outer); locking mechanism: Lennartz hole lock; dry; <2deg off vertical; emplacement depth 154m; Sensor cable with SED custom built strain relief at borehole head.
sensor depth below station 154.0 m
Distance to Building (m) -
Location Code SF
Opening Date 20-12-2013
End Date -
Housing Class Free field
Housing Description SED large pot in soil
sensor depth below station 1.0 m
Distance to Building (m) -

Current Instrumentation

Location code BT
On date 21-11-2016 15:30:00
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 21-11-2016 15:30:00
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 BT
On date 20-12-2013 14:00:00
Off date 2016-11-21 15:30:00
Waveform Access open
Sensor model LE-3D-BH
Sensor manufacturer Lennartz
Digitizer model Q330Splus
Digitizer manufacturer Quanterra
Channels EH2 , EH3 , EHZ
Location code SF
On date 20-12-2013 14:00:00
Off date 2016-11-21 15:30:00
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.BOBI.SF.HG not available
CH.BOBI.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...
measurements nearby list...