COMBLAIN-AU-PONT (BE)
Quarry blast23 June 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:50:502022-06-23
- UTC
- 12:50:502022-06-23
Main parameters
| Date and time | 2022-06-23 12:50:50 UTC 2022-06-23 14:50:50 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.497° N, 5.553° E Uncertainty ± 0.9 km |
| Event ID | ROB 16470 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-24 11:16:14 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
- 8
- Epicentral distance
- 19.9 – 59.3km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.3km/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: 8 measurements, root-mean-square deviation 0.24 s. S wave: 6 measurements, root-mean-square deviation 0.34 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)7 stations | |||||
| CLAClavier | 19.9 | 244 | 12:50:53.71+3.15 s | 12:50:57.03+6.47 s | 3.32 |
| EBNEben-Emael | 34.5 | 15 | 12:50:56.81+6.25 s | – | – |
| MEMHMembach | 34.7 | 69 | 12:50:56.68+6.12 s | 12:51:01.33+10.77 s | 4.65 |
| GESGesves | 35.4 | 250 | 12:50:56.70+6.14 s | 12:51:01.89+11.33 s | 5.19 |
| HOUHouvegnez | 35.8 | 116 | 12:50:56.93+6.37 s | 12:51:01.87+11.31 s | 4.94 |
| MRGMont Rigi | 37.0 | 87 | 12:50:57.06+6.50 s | 12:51:01.49+10.93 s | 4.43 |
| KLBKalborn | 59.3 | 138 | 12:51:01.29+10.73 s | 12:51:08.36+17.80 s | 7.07 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 40.0 | 42 | 12:50:57.27+6.71 s | – | – |