COMBLAIN-AU-PONT (BE)
Quarry blast4 April 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 11:44:452022-04-04
- UTC
- 09:44:452022-04-04
Main parameters
| Date and time | 2022-04-04 09:44:45 UTC 2022-04-04 11:44:45 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.478° N, 5.566° E Uncertainty ± 1.2 km |
| Event ID | ROB 15870 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-06 09:36:49 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
- 19.8 – 81.2km
- Mean velocity, P wave
- 5.8km/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: 10 measurements, root-mean-square deviation 0.42 s. S wave: 6 measurements, root-mean-square deviation 0.18 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 | |||||
| CLAClavier | 19.8 | 251 | 09:44:48.59+3.13 s | 09:44:51.64+6.18 s | 3.05 |
| MEMHMembach | 34.7 | 65 | 09:44:51.28+5.82 s | 09:44:56.30+10.84 s | 5.02 |
| GESGesves | 35.5 | 253 | 09:44:51.54+6.08 s | 09:44:56.73+11.27 s | 5.19 |
| MRGMont Rigi | 36.3 | 84 | 09:44:52.04+6.58 s | 09:44:56.90+11.44 s | 4.86 |
| EBNEben-Emael | 36.4 | 13 | 09:44:52.40+6.94 s | – | – |
| RCHRochefort | 43.2 | 214 | 09:44:52.66+7.20 s | 09:44:59.15+13.69 s | 6.49 |
| KLBKalborn | 57.1 | 137 | 09:44:54.85+9.39 s | 09:45:02.95+17.49 s | 8.10 |
| OPTOpitter | 70.7 | 4 | 09:44:57.53+12.07 s | – | – |
| TGATangissart | 75.3 | 281 | 09:44:57.98+12.52 s | – | – |
| DOUDourbes | 81.2 | 239 | 09:45:00.23+14.77 s | – | – |