Sensor locations
| Location Code | BT |
|---|---|
| Opening Date | 22-04-2015 |
| End Date | - |
| Housing Class | Borehole |
| Housing Description | casing: metal; casing length: 106m (from 101m there is a 5m concrete plug), top of sensor lies 3m above concrete plug, 99m below surface. Borehole casing starts at 1m depth ; inner diameter: 160.2mm; dry (up to 100m); locking mechanism: Hole Lock; 2 Magnetic cable strain relief: on 50m and 97m; Tie wrap (attached to Data cable and steel cable) approx. every 6m; |
| sensor depth below station | 99.0 m |
| Distance to Building (m) | - |
| Location Code | D0 |
|---|---|
| Opening Date | 22-04-2015 |
| End Date | - |
| Housing Class | Free field |
| Housing Description | SED large pot in soil |
| sensor depth below station | - |
| Distance to Building (m) | - |
| Location Code | SF |
|---|---|
| Opening Date | 22-04-2015 |
| End Date | - |
| Housing Class | Free field |
| Housing Description | SED large pot in soil |
| sensor depth below station | 1.0 m |
| Distance to Building (m) | - |
Current Instrumentation
| Location code | BT |
|---|---|
| On date | 01-09-2017 17:30:00 |
| Off date | - |
| Sensor model | Trillium Borehole 120s |
| Sensor manufacturer | Nanometrics |
| Digitizer model | Centaur |
| Digitizer manufacturer | Nanometrics |
| Channels | BH2 , BH3 , BHZ , HH2 , HH3 , HHZ |
| Stream Noise (last week) | BH2 , BH3 , BHZ , HH2 , HH3 , HHZ |
| Location code | SF |
|---|---|
| On date | 22-04-2015 13:45:13 |
| 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 |
Site Characterization
|
channel group |
Empirical Amplification |
|---|---|
| CH.ROMAN.BT.HH |  |
| CH.ROMAN.SF.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.
| measurements nearby | list... |
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