DINANT (BE)
Quarry blast19 March 2019
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 11:28:502019-03-19
- UTC
- 10:28:502019-03-19
Main parameters
| Date and time | 2019-03-19 10:28:50 UTC 2019-03-19 11:28:50 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.291° N, 4.913° E Uncertainty ± 0.9 km |
| Event ID | ROB 7960 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-03-19 12:56:07 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
- 10.4 – 31.5km
- Mean velocity, P wave
- 5.5km/s
- Mean velocity, S wave
- 3.2km/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 0.19 s. S wave: 5 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)5 stations | |||||
| MRDMaredsous | 10.4 | 277 | 10:28:52.20+1.93 s | 10:28:53.72+3.45 s | 1.52 |
| GESGesves | 16.2 | 50 | 10:28:53.48+3.21 s | 10:28:55.66+5.39 s | 2.18 |
| RCHRochefort | 27.0 | 124 | 10:28:54.99+4.72 s | 10:28:58.53+8.26 s | 3.54 |
| CLAClavier | 31.1 | 63 | 10:28:56.19+5.92 s | 10:29:00.13+9.86 s | 3.94 |
| DOUDourbes | 31.5 | 226 | 10:28:56.30+6.03 s | 10:29:00.28+10.01 s | 3.98 |