DINANT (BE)
Quarry blast9 November 2018
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:28:592018-11-09
- UTC
- 09:28:592018-11-09
Main parameters
| Date and time | 2018-11-09 09:28:59 UTC 2018-11-09 10:28:59 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.267° N, 4.890° E Uncertainty ± 1.8 km |
| Event ID | ROB 7360 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-20 14:51:26 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
- 5
- Epicentral distance
- 9.5 – 33.8km
- Mean velocity, P wave
- 6.2km/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: 5 measurements, root-mean-square deviation 0.52 s. S wave: 4 measurements, root-mean-square deviation 0.41 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)5 stations | |||||
| MRDMaredsous | 9.5 | 294 | 09:29:01.32+1.73 s | 09:29:02.59+3.00 s | 1.27 |
| GESGesves | 19.2 | 47 | 09:29:04.03+4.44 s | 09:29:06.41+6.82 s | 2.38 |
| RCHRochefort | 27.1 | 117 | 09:29:04.17+4.58 s | 09:29:07.80+8.21 s | 3.63 |
| DOUDourbes | 28.5 | 228 | 09:29:05.17+5.58 s | 09:29:08.84+9.25 s | 3.67 |
| CLAClavier | 33.8 | 60 | 09:29:05.07+5.48 s | – | – |