PROFONDEVILLE (BE)
Quarry blast16 November 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 11:54:592020-11-16
- UTC
- 10:54:592020-11-16
Main parameters
| Date and time | 2020-11-16 10:54:59 UTC 2020-11-16 11:54:59 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.388° N, 4.868° E Uncertainty ± 0.7 km |
| Event ID | ROB 11345 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-20 00:13:53 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
- 4
- Epicentral distance
- 11.9 – 37.9km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.0km/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: 4 measurements, root-mean-square deviation 0.10 s. S wave: 4 measurements, root-mean-square deviation 0.07 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)4 stations | |||||
| MRDMaredsous | 11.9 | 217 | 10:55:01.22+2.18 s | 10:55:02.98+3.94 s | 1.76 |
| GESGesves | 15.6 | 91 | 10:55:01.66+2.62 s | 10:55:04.05+5.01 s | 2.39 |
| CLAClavier | 31.0 | 83 | 10:55:04.74+5.70 s | 10:55:09.08+10.04 s | 4.34 |
| DOUDourbes | 37.9 | 211 | 10:55:06.07+7.03 s | 10:55:11.43+12.39 s | 5.36 |