ANDENNE (BE)
Quarry blast27 June 2023
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 13:48:282023-06-27
- UTC
- 11:48:282023-06-27
Main parameters
| Date and time | 2023-06-27 11:48:28 UTC 2023-06-27 13:48:28 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.504° N, 5.012° E Uncertainty ± 1.8 km |
| Event ID | ROB 19740 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-06-29 23:55:59 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
- 6
- Epicentral distance
- 14.3 – 90.2km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.6km/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: 6 measurements, root-mean-square deviation 0.29 s. S wave: 6 measurements, root-mean-square deviation 0.35 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)6 stations | |||||
| GESGesves | 14.3 | 158 | 11:48:31.60+2.84 s | 11:48:33.33+4.57 s | 1.73 |
| CLAClavier | 22.7 | 115 | 11:48:33.28+4.52 s | 11:48:36.19+7.43 s | 2.91 |
| MRDMaredsous | 28.4 | 218 | 11:48:34.08+5.32 s | 11:48:37.79+9.03 s | 3.71 |
| TGATangissart | 36.5 | 288 | 11:48:35.20+6.44 s | 11:48:39.31+10.55 s | 4.11 |
| DOUDourbes | 54.4 | 213 | 11:48:38.89+10.13 s | 11:48:44.79+16.03 s | 5.90 |
| KLBKalborn | 90.2 | 119 | 11:48:45.56+16.80 s | 11:48:54.31+25.55 s | 8.75 |