NAMUR (BE)
Quarry blast7 November 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:15:212022-11-07
- UTC
- 13:15:212022-11-07
Main parameters
| Date and time | 2022-11-07 13:15:21 UTC 2022-11-07 14:15:21 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.497° N, 4.978° E Uncertainty ± 1.2 km |
| Event ID | ROB 17665 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:40:17 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
- 12
- Epicentral distance
- 14.7 – 74.2km
- Mean velocity, P wave
- 5.9km/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: 12 measurements, root-mean-square deviation 0.31 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)9 stations | |||||
| GESGesves | 14.7 | 148 | 13:15:24.07+2.49 s | 13:15:26.11+4.53 s | 2.04 |
| CLAClavier | 24.6 | 110 | 13:15:26.23+4.65 s | 13:15:29.24+7.66 s | 3.01 |
| MRDMaredsous | 26.3 | 215 | 13:15:26.57+4.99 s | 13:15:30.03+8.45 s | 3.46 |
| TGATangissart | 34.5 | 291 | 13:15:27.73+6.15 s | – | – |
| RCHRochefort | 42.0 | 155 | 13:15:29.15+7.57 s | – | – |
| SNFSeneffe | 49.2 | 272 | 13:15:29.90+8.32 s | – | – |
| DOUDourbes | 52.3 | 212 | 13:15:31.08+9.50 s | – | – |
| SKQSteenkerque | 65.8 | 285 | 13:15:32.65+11.07 s | – | – |
| MEMHMembach | 74.2 | 80 | 13:15:34.81+13.23 s | – | – |
| Dutch seismic network (KNMI)3 stations | |||||
| VKBValkenburg | 70.4 | 54 | 13:15:34.46+12.88 s | – | – |
| TERZTerziet | 71.8 | 66 | 13:15:33.83+12.25 s | – | – |
| HGNHeimansgroeve | 73.8 | 66 | 13:15:34.17+12.59 s | – | – |
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