COMBLAIN-AU-PONT (BE)
Quarry blast30 March 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 13:06:172022-03-30
- UTC
- 11:06:172022-03-30
Main parameters
| Date and time | 2022-03-30 11:06:17 UTC 2022-03-30 13:06:17 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.502° N, 5.556° E Uncertainty ± 0.7 km |
| Event ID | ROB 15845 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-04-06 09:31:57 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
- 9.0 – 82.1km
- Mean velocity, P wave
- 5.7km/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: 12 measurements, root-mean-square deviation 0.18 s. S wave: 6 measurements, root-mean-square deviation 0.29 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)11 stations | |||||
| STISart Tilman | 9.0 | 3 | 11:06:19.05+1.63 s | – | – |
| LCHLa Chartreuse | 15.6 | 11 | 11:06:20.45+3.03 s | – | – |
| CLAClavier | 20.3 | 243 | 11:06:20.80+3.38 s | 11:06:23.93+6.51 s | 3.13 |
| MEMSMembach | 34.3 | 69 | 11:06:23.59+6.17 s | – | – |
| MEMHMembach | 34.3 | 69 | 11:06:23.63+6.21 s | 11:06:27.97+10.55 s | 4.34 |
| GESGesves | 35.8 | 249 | 11:06:23.80+6.38 s | 11:06:28.67+11.25 s | 4.87 |
| HOUHouvegnez | 35.9 | 117 | 11:06:23.94+6.52 s | – | – |
| MRGMont Rigi | 36.8 | 88 | 11:06:23.96+6.54 s | 11:06:28.76+11.34 s | 4.80 |
| RCHRochefort | 45.1 | 211 | 11:06:25.18+7.76 s | – | – |
| KLBKalborn | 59.6 | 138 | 11:06:28.31+10.89 s | 11:06:35.08+17.66 s | 6.77 |
| DOUDourbes | 82.1 | 237 | 11:06:32.21+14.79 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.5 | 42 | 11:06:24.67+7.25 s | 11:06:29.83+12.41 s | 5.16 |