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Station Overview

Overview Location not available
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Network CH
Station Code GRIMS
Station Description Grimsel, Gerstenegg, BE
Latitude (WGS84) 46.57814
Longitude (WGS84) 8.318864
Station altitude (CH1903) 1746.0
running from 2011-11-09
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Granite of the Aarmassif
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) .45
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 09-11-2011
End Date -
Housing Class Tunnel
Housing Description Sensors in huge tunnel complex (Nagra rock lab), 500m below free surface, 1500m from nearest entrance. Sensor placed directly on concrete floor on rock. BB has GRSN shield.
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 30-10-2015 10:50:00
Off date -
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels HGE , HGN , HGZ
Stream Noise (last week) HGE , HGN , HGZ
Location code (none)
On date 30-10-2015 10:50:00
Off date -
Sensor model STS2_gen3
Sensor manufacturer Streckeisen
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels HHE , HHN , HHZ
Stream Noise (last week) HHE , HHN , HHZ
Location code (none)
On date 25-11-2011 16:00:00
Off date 2015-10-30 10:50:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels HGE , HGN , HGZ
Location code (none)
On date 09-11-2011 00:00:00
Off date 2015-10-30 10:50:00
Waveform Access open
Sensor model STS2_gen3
Sensor manufacturer Streckeisen
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels HHE , HHN , HHZ
Location code (none)
On date 09-11-2011 00:00:00
Off date 2011-11-25 16:00:00
Waveform Access open
Sensor model EpiSensor ES-T
Sensor manufacturer Kinemetrics
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels HGE , HGN , HGZ

Site Characterization

channel group
 Empirical Amplification
CH.GRIMS..HG not available
CH.GRIMS..HH 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...