SPRIMONT (BE)
Quarry blast23 November 2022
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 16:38:372022-11-23
- UTC
- 15:38:372022-11-23
Main parameters
| Date and time | 2022-11-23 15:38:37 UTC 2022-11-23 16:38:37 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.479° N, 5.614° E Uncertainty ± 0.5 km |
| Event ID | ROB 17845 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-24 09:14:40 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
- 13
- Epicentral distance
- 12.1 – 54.9km
- Mean velocity, P wave
- 5.7km/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: 13 measurements, root-mean-square deviation 0.14 s. S wave: 6 measurements, root-mean-square deviation 0.25 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)10 stations | |||||
| STISart Tilman | 12.1 | 343 | 15:38:39.80+2.26 s | – | – |
| LCHLa Chartreuse | 17.9 | 357 | 15:38:41.07+3.53 s | – | – |
| CLAClavier | 23.2 | 253 | 15:38:41.85+4.31 s | 15:38:44.65+7.11 s | 2.80 |
| HOUHouvegnez | 31.1 | 116 | 15:38:43.27+5.73 s | 15:38:47.12+9.58 s | 3.85 |
| MEMSMembach | 31.6 | 63 | 15:38:43.50+5.96 s | – | – |
| MEMHMembach | 31.6 | 63 | 15:38:43.54+6.00 s | 15:38:46.89+9.35 s | 3.35 |
| MRGMont Rigi | 32.9 | 84 | 15:38:43.47+5.93 s | – | – |
| TNLTernell | 38.5 | 72 | 15:38:44.36+6.82 s | – | – |
| GESGesves | 38.9 | 255 | 15:38:44.49+6.95 s | 15:38:49.56+12.02 s | 5.07 |
| KLBKalborn | 54.9 | 140 | 15:38:47.65+10.11 s | 15:38:53.97+16.43 s | 6.32 |
| Dutch seismic network (KNMI)3 stations | |||||
| TERZTerziet | 37.2 | 34 | 15:38:44.26+6.72 s | 15:38:48.28+10.74 s | 4.02 |
| HGNHeimansgroeve | 38.9 | 35 | 15:38:44.49+6.95 s | – | – |
| VKBValkenburg | 44.8 | 16 | 15:38:45.51+7.97 s | – | – |