DINANT (BE)
Quarry blast13 July 2020
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 10:30:002020-07-13
- UTC
- 08:30:002020-07-13
Main parameters
| Date and time | 2020-07-13 08:30:00 UTC 2020-07-13 10:30:00 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.278° N, 4.911° E Uncertainty ± 1.0 km |
| Event ID | ROB 10450 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-13 23:16:15 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
- 10.5 – 31.9km
- Mean velocity, P wave
- 6.3km/s
- Mean velocity, S wave
- 3.3km/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 0.18 s. S wave: 5 measurements, root-mean-square deviation 0.19 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 | 10.5 | 285 | 08:30:02.02+1.78 s | 08:30:04.31+4.07 s | 2.29 |
| GESGesves | 17.2 | 46 | 08:30:03.27+3.03 s | 08:30:06.05+5.81 s | 2.78 |
| RCHRochefort | 26.4 | 121 | 08:30:04.89+4.65 s | 08:30:08.70+8.46 s | 3.81 |
| DOUDourbes | 30.4 | 228 | 08:30:05.53+5.29 s | 08:30:09.93+9.69 s | 4.40 |
| CLAClavier | 31.9 | 60 | 08:30:05.95+5.71 s | 08:30:10.42+10.18 s | 4.47 |