SED Stations

Station Overview

Field	Value
image
legend

Overview Location
Picture Gallery	details...

Field	Value
Network
Station Code
Station Description
Latitude (WGS84)
Longitude (WGS84)
Station altitude (CH1903)
running from
...until
Waveform Access

Network	CH
Station Code	VANNI
Station Description	Val d'Anniviers, VS
Latitude (WGS84)	46.21006
Longitude (WGS84)	7.59678
Station altitude (CH1903)	1520.0
running from	2009-10-30
...until	now
Waveform Access	open

Field	Value
Sensor Types

Sensor Types	Velocimeter

Field	Value
Geological Unit
Site Morphology Class
Site Morphology Description
Ground type EC8
Ground type SIA
Basin Information
Reference

Geological Unit	Gneiss and Mica-schists
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

Field	Value
Resonance Frequency (Hz)
Uncertainty Factor

Resonance Frequency (Hz)	2.65
Uncertainty Factor	-

Field	Value
Vs 30 (m/s)

Vs 30 (m/s)	-

Field	Value
Location Map
Topography Map
Geology Map

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

Field	Value
Location Code
Opening Date
End Date
Housing Class
Housing Description
sensor depth below station
Distance to Building (m)

Location Code	(none)
Opening Date	30-10-2009
End Date	-
Housing Class	Tunnel
Housing Description	Sensor in tunnel 35m directly below free surface, 40m from nearest entrance. Sensor placed directly on tunnel floor on rock. Gallery for water supply maintenance.
sensor depth below station	0.0 m
Distance to Building (m)	-

Current Instrumentation

Field	Value
Location code
On date
Off date
Sensor model
Sensor manufacturer
Digitizer model
Digitizer manufacturer
Channels
Stream Noise (last week)

Location code	(none)
On date	30-10-2009 00:00:00
Off date	-
Sensor model	Trillium 40s
Sensor manufacturer	Nanometrics
Digitizer model	Taurus
Digitizer manufacturer	Nanometrics
Channels	BHE , BHN , BHZ
Stream Noise (last week)	BHE , BHN , BHZ

Location code	(none)
On date	14-11-2024 09:56:00
Off date	-
Sensor model	Trillium 40s
Sensor manufacturer	Nanometrics
Digitizer model	Taurus
Digitizer manufacturer	Nanometrics
Channels	HHE , HHN , HHZ
Stream Noise (last week)	HHE , HHN , HHZ

Instrumentation History

Field	Value
Location code
On date
Off date
Waveform Access
Sensor model
Sensor manufacturer
Digitizer model
Digitizer manufacturer
Channels

Location code	(none)
On date	30-10-2009 00:00:00
Off date	2024-11-14 09:56:00
Waveform Access	open
Sensor model	Trillium 40s
Sensor manufacturer	Nanometrics
Digitizer model	Taurus
Digitizer manufacturer	Nanometrics
Channels	HHE , HHN , HHZ

Site Characterization

channel group Filter dialog for field: channel group and Options for empty fields: only empty fields no empty fields include empty fields	Empirical Amplification Filter dialog for field: Empirical Amplification and Options for empty fields: only empty fields no empty fields include empty fields
CH.VANNI..HH

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	-

Field	Value
measurements nearby

measurements nearby	list...