SED Stations

Station Overview

image
legend	Overview at SGAK

Field	Value
Overview Location
Picture Gallery

Overview Location	not available
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	SGAK
Station Description	Gampel, Kirche, VS
Latitude (WGS84)	46.31533
Longitude (WGS84)	7.741361
Station altitude (CH1903)	687.0
running from	2016-05-30
...until	now
Waveform Access	open

Field	Value
Sensor Types

Sensor Types	Accelerometer

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

Geological Unit	Alluvium (unconsolidated debris)
Site Morphology Class	T1 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	Fluvial geomorphology: alluvial slope, plain, cone
Ground type EC8	B
Ground type SIA	C
Basin Information	In a sedimentary basin with lateral propagation and 2D/3D resonance effects basin
Reference	Hobiger Manuel, Bergamo P., Michel C. & Fäh D., "SITE CHARACTERIZATION REPORT SGAK: Gampel (VS) - Kirche", Swiss Seismological Service, ETH Zürich, 2017

Field	Value
Resonance Frequency (Hz)
Uncertainty Factor

Resonance Frequency (Hz)	1.95
Uncertainty Factor	-

Field	Value
Vs 30 (m/s)

Vs 30 (m/s)	378

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	30-05-2016
End Date	-
Housing Class	Free field
Housing Description	small pot, concrete vault, sensor bolted to the foundation
sensor depth below station	0.5 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	30-05-2016 17:00:00
Off date	-
Sensor model	EpiSensor ES-T
Sensor manufacturer	Kinemetrics
Digitizer model	Centaur
Digitizer manufacturer	Nanometrics
Channels	HGE , HGN , HGZ
Stream Noise (last week)	HGE , HGN , HGZ

Instrumentation History

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

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.SGAK..HG

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	details...

Field	Value
measurements nearby

measurements nearby	list...