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Station Overview

Overview Location not available
Picture Gallery details...
Network CH
Station Code RAND
Station Description Randa, VS, GNSS network
Latitude (WGS84) 46.11565
Longitude (WGS84) 7.770208
Station altitude (CH1903) 2464.0
running from 2023-02-07
...until 2023-02-08
Waveform Access open
Sensor Types Velocimeter
Geological Unit
Site Morphology Class
Site Morphology Description
Ground type EC8
Ground type SIA
Basin Information no information available
Reference
Resonance Frequency (Hz) -
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 07-02-2023
End Date 2023-02-08
Housing Class -
Housing Description Hard rock site. Antenna attached to a rigid metal pole construction, directly installed on hard rock.
sensor depth below station 0.0 m
Distance to Building (m) -

Current Instrumentation

No open epochs

Location code (none)
On date 07-02-2023 00:00:00
Off date 2023-02-08 00:00:00
Waveform Access open
Sensor model AR25
Sensor manufacturer Leica
Digitizer model GRX1200+
Digitizer manufacturer Leica
Channels LXE , LXN , LXZ

Site Characterization

channel group
 Empirical Amplification
CH.RAND..LX 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: not available
Authoritative Site Characterization Analysis -
measurements nearby list...