DINANT (BE)
Quarry blast2 February 2021
- Magnitude
- 0.8ML
- Depth
- –
- Belgian time
- 10:28:272021-02-02
- UTC
- 09:28:272021-02-02
Main parameters
| Date and time | 2021-02-02 09:28:27 UTC 2021-02-02 10:28:27 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.286° N, 4.904° E Uncertainty ± 0.5 km |
| Event ID | ROB 12180 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-02-08 00:19:50 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
- 9.9 – 31.9km
- Mean velocity, P wave
- 5.9km/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 0.18 s. S wave: 5 measurements, root-mean-square deviation 0.24 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 | 9.9 | 280 | 09:28:29.67+1.75 s | 09:28:31.28+3.36 s | 1.61 |
| GESGesves | 17.0 | 50 | 09:28:31.11+3.19 s | 09:28:33.82+5.90 s | 2.71 |
| RCHRochefort | 27.3 | 122 | 09:28:32.60+4.68 s | 09:28:36.32+8.40 s | 3.72 |
| DOUDourbes | 30.7 | 226 | 09:28:33.68+5.76 s | 09:28:37.76+9.84 s | 4.08 |
| CLAClavier | 31.9 | 62 | 09:28:33.54+5.62 s | 09:28:38.33+10.41 s | 4.79 |