ANDENNE (BE)
Quarry blast5 November 2021
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 13:44:512021-11-05
- UTC
- 12:44:512021-11-05
Main parameters
| Date and time | 2021-11-05 12:44:51 UTC 2021-11-05 13:44:51 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.485° N, 5.024° E Uncertainty ± 2.4 km |
| Event ID | ROB 14690 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-11-08 14:14:33 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
- 6
- Epicentral distance
- 12.0 – 88.4km
- Mean velocity, P wave
- 5.3km/s
- Mean velocity, S wave
- 3.1km/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: 6 measurements, root-mean-square deviation 0.47 s. S wave: 4 measurements, root-mean-square deviation 0.37 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)6 stations | |||||
| GESGesves | 12.0 | 158 | 12:44:52.96+1.40 s | 12:44:55.27+3.71 s | 2.31 |
| CLAClavier | 21.1 | 110 | 12:44:55.99+4.43 s | 12:44:58.05+6.49 s | 2.06 |
| MRDMaredsous | 27.3 | 222 | 12:44:56.68+5.12 s | 12:45:00.76+9.20 s | 4.08 |
| TGATangissart | 38.0 | 291 | 12:44:57.98+6.42 s | – | – |
| DOUDourbes | 53.1 | 215 | 12:45:01.18+9.62 s | 12:45:08.08+16.52 s | 6.90 |
| KLBKalborn | 88.4 | 119 | 12:45:08.41+16.85 s | – | – |