Station Overview

Overview Location
Picture Gallery details...
Network 8D
Station Code CHBZ2
Station Description Basel, City 2, BS
Latitude (WGS84) 47.56750
Longitude (WGS84) 7.567827
Station altitude (CH1903) 270.0
running from 2007-04-02
...until 2007-05-09
Waveform Access open
Sensor Types Velocimeter
Geological Unit Alluvial terrace (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 Terrace above the Rhine plain
Ground type EC8
Ground type SIA
Basin Information Rhine basin
Reference
Resonance Frequency (Hz) 1.
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 02-04-2007
End Date 2007-05-09
Housing Class Building
Housing Description Basement of a building in a row
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

No open epochs

Location code (none)
On date 02-04-2007 00:00:00
Off date 2007-05-09 00:00:00
Waveform Access open
Sensor model LE-3D-5s
Sensor manufacturer Lennartz
Digitizer model Q330
Digitizer manufacturer Quanterra
Channels EHE , EHN , EHZ

Site Characterization

channel group
Empirical Amplification
8D.CHBZ2..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:
Authoritative Site Characterization Analysis -
measurements nearby list...