ANDENNE (BE)
Quarry blast5 July 2023
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 13:55:552023-07-05
- UTC
- 11:55:552023-07-05
Main parameters
| Date and time | 2023-07-05 11:55:55 UTC 2023-07-05 13:55:55 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.498° N, 4.992° E Uncertainty ± 1.1 km |
| Event ID | ROB 19860 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-07-10 14:28:21 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
- 14.3 – 53.0km
- Mean velocity, P wave
- 5.8km/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 0.29 s. S wave: 5 measurements, root-mean-square deviation 0.21 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 | |||||
| GESGesves | 14.3 | 152 | 11:55:58.07+2.51 s | 11:56:00.21+4.65 s | 2.14 |
| CLAClavier | 23.7 | 112 | 11:56:00.15+4.59 s | 11:56:03.18+7.62 s | 3.03 |
| MRDMaredsous | 27.0 | 216 | 11:56:00.63+5.07 s | 11:56:04.31+8.75 s | 3.68 |
| TGATangissart | 35.3 | 290 | 11:56:01.54+5.98 s | 11:56:06.39+10.83 s | 4.85 |
| DOUDourbes | 53.0 | 212 | 11:56:05.33+9.77 s | 11:56:11.47+15.91 s | 6.14 |