BASTOGNE (BE)
Quarry blast4 November 2020
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 13:40:492020-11-04
- UTC
- 12:40:492020-11-04
Main parameters
| Date and time | 2020-11-04 12:40:49 UTC 2020-11-04 13:40:49 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.015° N, 5.755° E Uncertainty ± 0.6 km |
| Event ID | ROB 11240 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-04 14:20:38 Belgian time
Location map
- Epicentre
- Station that recorded the event
Arrival times at the stations
Each station first records the P wave, the fastest, then the S wave. The farther a station is from the epicentre, the later the waves reach it and the wider the gap between the two.
- Stations
- 11
- Epicentral distance
- 33.3 – 109.6km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.4km/s
- P wave
- S wave
- Curve fitted to the measurements
Notes and method
Curves: travel time of a direct wave in a homogeneous medium. The velocity of each wave and an origin-time shift, common to both, are fitted to the measurements by least squares. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 11 measurements, root-mean-square deviation 0.26 s. S wave: 4 measurements, root-mean-square deviation 0.16 s.
Station measurements
P- and S-wave arrivals and ground displacement measured at each station. Click a column heading to change the order.
| km | ° | UTC | UTC | s | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)10 stations | |||||
| VIAVianden | 33.3 | 105 | 12:40:55.27+6.05 s | 12:40:59.46+10.24 s | 4.19 |
| RCHRochefort | 40.8 | 293 | 12:40:56.08+6.86 s | 12:41:01.55+12.33 s | 5.47 |
| HOUHouvegnez | 41.7 | 25 | 12:40:56.52+7.30 s | – | – |
| CLAClavier | 55.3 | 324 | 12:40:59.01+9.79 s | – | – |
| MRGMont Rigi | 59.7 | 22 | 12:40:59.81+10.59 s | – | – |
| GESGesves | 63.0 | 311 | 12:41:00.44+11.22 s | 12:41:07.96+18.74 s | 7.52 |
| MEMSMembach | 68.5 | 15 | 12:41:01.28+12.06 s | – | – |
| MEMHMembach | 68.5 | 15 | 12:41:01.28+12.06 s | – | – |
| DOUDourbes | 83.5 | 277 | 12:41:03.21+13.99 s | – | – |
| TGATangissart | 109.6 | 307 | 12:41:07.97+18.75 s | 12:41:22.17+32.95 s | 14.20 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 84.2 | 9 | 12:41:03.27+14.05 s | – | – |