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Station Overview

Overview Location not available
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Network CH
Station Code LKBD2
Station Description Leukerbad, Rinderhalte, VS
Latitude (WGS84) 46.37455
Longitude (WGS84) 7.64433
Station altitude (CH1903) 2128.0
running from 2001-07-05
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Quartzite/sandstone of Pliensbachian age (Lower Jurassic)
Site Morphology Class T2
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 Rock slope
Ground type EC8
Ground type SIA
Basin Information not in a sedimentary basin with possible 2D/3D effects
Reference
Resonance Frequency (Hz) 1.1
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 05-07-2001
End Date -
Housing Class Tunnel
Housing Description Sensor in tunnel 40m directly below free surface, 10m from nearest entrance. Tunnel is manmade, used as hiking / skiing piste, and is 85m long with an 20m long adit tunnel half way along that opens to cliff face. Sensor is half way along this adit tunnel. Tunnel located in extreme topography, roughly 300m from top of a steep 900m mountainside. The Tr.240s Sensor was placed on a new concrete foundation (120 x 120cm, h=~30cm) on Rock and insulated with a metal pot (d=90cm, h=70cm). The EPI Sensor was placed on the old foundation (60 x 80 cm, h=~20cm), which is 1,2m south-east of the Tr.240s Sensor and also isolated with a metal pot (d=40cm, h=60cm).
sensor depth below station -0.2 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 05-09-2018 21:00:00
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 16-09-2015 14:40:00
Off date -
Sensor model Trillium 240s_g2
Sensor manufacturer Nanometrics
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 05-07-2001 10:00:00
Off date 2015-09-16 14:40:00
Waveform Access open
Sensor model LE-3DliteMkII
Sensor manufacturer Lennartz
Digitizer model HRD24
Digitizer manufacturer Nanometrics
Channels SHE , SHN , SHZ

Site Characterization

channel group
 Empirical Amplification
CH.LKBD2..HH not available
CH.LKBD2..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 -
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