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Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code FIESA
Station Description Fiescheralp, VS
Latitude (WGS84) 46.43521
Longitude (WGS84) 8.11051
Station altitude (CH1903) 2341.0
running from 2009-11-12
...until now
Waveform Access open
Sensor Types Accelerometer Velocimeter
Geological Unit Augen gneiss of the Aarmassif
Site Morphology Class T4
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) .37
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 12-11-2009
End Date -
Housing Class Tunnel
Housing Description Sensor in tunnel 192m directly below free surface, 250m from nearest entrance. Sensor placed on 0.4m high concrete pedestal on rock. Tunnel open to public (walkers), restricted car access. GRSN shield.
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 21-09-2016 12:05:00
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 21-09-2016 12:05:00
Off date -
Sensor model STS2_gen2
Sensor manufacturer Streckeisen
Digitizer model Q330HRS
Digitizer manufacturer Quanterra
Channels BHE , BHN , BHZ , HHE , HHN , HHZ
Stream Noise (last week) BHE , BHN , BHZ , HHE , HHN , HHZ
Location code (none)
On date 12-11-2009 00:00:00
Off date 2016-09-21 12:05:00
Waveform Access open
Sensor model STS2_gen2
Sensor manufacturer Streckeisen
Digitizer model Trident
Digitizer manufacturer Nanometrics
Channels BHE , BHN , BHZ , HHE , HHN , HHZ

Site Characterization

channel group
 Empirical Amplification
CH.FIESA..HH not available
CH.FIESA..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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