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Station Overview

Overview Location
Picture Gallery details...
Network CH
Station Code METMA
Station Description Mettma, Germany
Latitude (WGS84) 47.71217
Longitude (WGS84) 8.25262
Station altitude (CH1903) 671.0
running from 2013-03-28
...until now
Waveform Access open
Sensor Types Velocimeter
Geological Unit Granite of the Black Forest
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 A
Ground type SIA A
Basin Information not in a sedimentary basin with possible 2D/3D effects
Reference Poggi Valerio, Keller L., "Mettma, Germany (METMA) Report on site characterization", Swiss Seismological Service, ETH Zürich, 2014
Resonance Frequency (Hz) -
Uncertainty Factor -
Vs 30 (m/s) 2717
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 28-03-2013
End Date -
Housing Class Tunnel
Housing Description Sensor in tunnel, long gallery tunnel for water reservoir access, 40m directly below free surface, 180m from nearest entrance. Sensor placed on 0.2m high concrete pedestal on rock
sensor depth below station -0.2 m
Distance to Building (m) -

Current Instrumentation

Location code (none)
On date 28-03-2013 15:11:39
Off date -
Sensor model Trillium Compact 120s
Sensor manufacturer Nanometrics
Digitizer model Taurus
Digitizer manufacturer Nanometrics
Channels BHE , BHN , BHZ , HHE , HHN , HHZ
Stream Noise (last week) BHE , BHN , BHZ , HHE , HHN , HHZ

Site Characterization

channel group
 Empirical Amplification
CH.METMA..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: not available
Authoritative Site Characterization Analysis details...
measurements nearby list...