Barcelona-Ciutat Vella seismic station (BAJU)
Code: CA.BAJU Name: Barcelona-Ciutat Vella Latitude: 41.3853 N Longitude: 2.1741 E Height: 25 m Local depth: 0 m Owner: Institut Cartogràfic i Geològic de Catalunya |
| Soil features | ||||
|---|---|---|---|---|
| Lithology | Period | Vs30 (m/s) | Classe EC8 | F0 (Hz) |
| Alluvial plain | Quaternary | 265 | C | 0.76 |
| Instrumentation by channels and periods | ||||
|---|---|---|---|---|
| Channels | Start date | Sensor type | Digitizer type | Instrumental response |
| HNZ, HNN, HNE | 26/02/2009 | Accelerometer | 24 bits | [StationXML] |
Geophysical characterization
H/V spectral ratio of seismic noise
A peak around 0.76 Hz is observed in the H/V spectral ratio of seismic noise; this can be related to the fundamental frequency of the ground, implying an expected acoustic impedance contrast in the subsoil.
H/V Spectral ratio of seismic noise records from Barcelona-Ciutat Vella seismic station
S-wave velocity model
In the shear-wave (Vs) propagation velocity model obtained by inverting dispersion curves (using the array technique), a surface layer approximately 47 meters thick with a velocity of about 265 m/s is observed. Below this, an increase in velocity is detected, exceeding 540 m/s. The depth of investigation is insufficient to detect a layer that could be associated with the bedrock.
S-waves velocity model of Barcelona-Ciutat Vella seismic station