VIROINVAL (BE)
Quarry blast10 August 2023
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 10:58:362023-08-10
- UTC
- 08:58:362023-08-10
Main parameters
| Date and time | 2023-08-10 08:58:36 UTC 2023-08-10 10:58:36 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.066° N, 4.577° E Uncertainty ± 6.0 km |
| Event ID | ROB 20075 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-08-12 14:57:31 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
- 3.5 – 109.7km
- Mean velocity, P wave
- 5.7km/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 0.69 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 | |||||
| DOUDourbes | 3.5 | 22 | 08:58:35.79−0.39 s | 08:58:37.45+1.27 s | 1.66 |
| MRDMaredsous | 29.6 | 27 | 08:58:42.12+5.94 s | 08:58:45.10+8.92 s | 2.98 |
| GESGesves | 50.8 | 46 | 08:58:45.38+9.20 s | 08:58:51.83+15.65 s | 6.45 |
| KLBKalborn | 109.7 | 87 | 08:58:54.87+18.69 s | – | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry