COMBLAIN-AU-PONT (BE)
Quarry blast12 July 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 13:07:012022-07-12
- UTC
- 11:07:012022-07-12
Main parameters
| Date and time | 2022-07-12 11:07:01 UTC 2022-07-12 13:07:01 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.505° N, 5.558° E Uncertainty ± 0.9 km |
| Event ID | ROB 16580 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-21 23:32:39 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
- 10
- Epicentral distance
- 8.7 – 60.5km
- 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: 10 measurements, root-mean-square deviation 0.25 s. S wave: 7 measurements, root-mean-square deviation 0.41 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 | |||||
| STISart Tilman | 8.7 | 3 | 11:07:02.67+1.58 s | – | – |
| CLAClavier | 20.5 | 242 | 11:07:04.22+3.13 s | 11:07:07.64+6.55 s | 3.42 |
| MEMSMembach | 34.1 | 70 | 11:07:07.30+6.21 s | 11:07:12.14+11.05 s | 4.84 |
| MEMHMembach | 34.1 | 70 | 11:07:07.31+6.22 s | 11:07:12.07+10.98 s | 4.76 |
| HOUHouvegnez | 35.9 | 118 | 11:07:07.65+6.56 s | 11:07:12.53+11.44 s | 4.88 |
| GESGesves | 36.0 | 248 | 11:07:07.29+6.20 s | 11:07:12.57+11.48 s | 5.28 |
| TNLTernell | 41.6 | 77 | 11:07:08.34+7.25 s | 11:07:13.46+12.37 s | 5.12 |
| KLBKalborn | 59.8 | 139 | 11:07:11.80+10.71 s | 11:07:18.81+17.72 s | 7.01 |
| MRDMaredsous | 60.5 | 248 | 11:07:11.75+10.66 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| VKBValkenburg | 43.4 | 22 | 11:07:08.73+7.64 s | – | – |