EUPEN (BE)
Quarry blast24 January 2022
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 15:03:582022-01-24
- UTC
- 14:03:582022-01-24
Main parameters
| Date and time | 2022-01-24 14:03:58 UTC 2022-01-24 15:03:58 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.660° N, 6.033° E Uncertainty ± 0.4 km |
| Event ID | ROB 15275 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-01-28 13:40:27 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
- 5.9 – 58.3km
- Mean velocity, P wave
- 5.9km/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: 8 measurements, root-mean-square deviation 0.17 s. S wave: 7 measurements, root-mean-square deviation 0.17 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)6 stations | |||||
| MEMSMembach | 5.9 | 196 | 14:03:59.77+1.02 s | 14:04:00.95+2.20 s | 1.18 |
| MEMHMembach | 5.9 | 196 | 14:03:59.78+1.03 s | 14:04:00.91+2.16 s | 1.13 |
| TNLTernell | 10.8 | 140 | 14:04:00.75+2.00 s | 14:04:02.57+3.82 s | 1.82 |
| MRGMont Rigi | 16.9 | 170 | 14:04:01.94+3.19 s | 14:04:04.61+5.86 s | 2.67 |
| HOUHouvegnez | 34.1 | 183 | 14:04:05.05+6.30 s | 14:04:09.52+10.77 s | 4.47 |
| CLAClavier | 58.3 | 243 | 14:04:08.79+10.04 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 13.6 | 328 | 14:04:01.31+2.56 s | 14:04:03.44+4.69 s | 2.13 |
| TERZTerziet | 14.0 | 320 | 14:04:01.47+2.72 s | 14:04:03.60+4.85 s | 2.13 |