Sensor locations
| Location Code | BT |
|---|---|
| Opening Date | 08-10-2020 |
| End Date | - |
| Housing Class | Borehole |
| Housing Description | casing: plastic (PVC); casing length: unknown (at least 107m; inner diameter: 125mm; filled with water (ground water level around -20m upper edge of the pipe); locking mechanism: non; Sensor placed on the ground, borehole base filled/covered with glass balls; steel reinforced sensor-cable fixed to borehole cover. |
| sensor depth below station | 105.5 m |
| Distance to Building (m) | - |
| Location Code | SF |
|---|---|
| Opening Date | 08-10-2020 |
| End Date | - |
| Housing Class | - |
| Housing Description | - |
| sensor depth below station | 1.0 m |
| Distance to Building (m) | - |
| Location Code | SF |
|---|---|
| Opening Date | 08-10-2020 |
| End Date | - |
| Housing Class | Free field |
| Housing Description | SSMNet large pot; concrete vault; sensor bolted to concrete base; Distance to the closest building or other structure taller than 1-story high = 70m to Building (10 m to high-voltage line) |
| sensor depth below station | 1.0 m |
| Distance to Building (m) | - |
Current Instrumentation
| Location code | BT |
|---|---|
| On date | 08-10-2020 12:00:00 |
| Off date | - |
| Sensor model | S21g-2.0 |
| Sensor manufacturer | IESE |
| Digitizer model | Centaur |
| Digitizer manufacturer | Nanometrics |
| Channels | EH2 , EH3 , EHZ |
| Stream Noise (last week) | EH2 , EH3 , EHZ |
| Location code | SF |
|---|---|
| On date | 08-10-2020 12:00:00 |
| 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 |
Site Characterization
|
channel group |
Empirical Amplification |
|---|---|
| CH.BLOTZ.SF.HG |  |
| CH.BLOTZ.BT.EH |  |
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... |
|---|