ANDENNE (BE)
Quarry blast8 December 2022
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 14:15:552022-12-08
- UTC
- 13:15:552022-12-08
Main parameters
| Date and time | 2022-12-08 13:15:55 UTC 2022-12-08 14:15:55 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.479° N, 5.022° E Uncertainty ± 3.2 km |
| Event ID | ROB 18000 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-12-14 16:17:34 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
- 7
- Epicentral distance
- 11.4 – 88.2km
- Mean velocity, P wave
- 5.5km/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: 7 measurements, root-mean-square deviation 0.76 s. S wave: 4 measurements, root-mean-square deviation 0.43 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 | 11.4 | 156 | 13:15:57.35+1.81 s | 13:15:59.00+3.46 s | 1.65 |
| CLAClavier | 20.9 | 108 | 13:15:59.24+3.70 s | 13:16:02.64+7.10 s | 3.40 |
| MRDMaredsous | 26.7 | 223 | 13:15:59.92+4.38 s | 13:16:03.25+7.71 s | 3.33 |
| DOUDourbes | 52.5 | 216 | 13:16:06.47+10.93 s | 13:16:11.95+16.41 s | 5.48 |
| KLBKalborn | 88.2 | 118 | 13:16:11.85+16.31 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| TERZTerziet | 69.8 | 63 | 13:16:07.26+11.72 s | – | – |
| HGNHeimansgroeve | 71.7 | 63 | 13:16:07.59+12.05 s | – | – |