EUPEN (BE)
Quarry blast12 September 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:57:342022-09-12
- UTC
- 12:57:342022-09-12
Main parameters
| Date and time | 2022-09-12 12:57:34 UTC 2022-09-12 14:57:34 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.657° N, 6.036° E Uncertainty ± 0.6 km |
| Event ID | ROB 17105 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-13 12:13:01 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
- 6
- Epicentral distance
- 5.6 – 62.1km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.0km/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: 6 measurements, root-mean-square deviation 0.12 s. S wave: 4 measurements, root-mean-square deviation 0.23 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)4 stations | |||||
| MEMSMembach | 5.6 | 199 | 12:57:35.31+0.86 s | 12:57:36.54+2.09 s | 1.23 |
| MRGMont Rigi | 16.4 | 170 | 12:57:37.46+3.01 s | 12:57:40.35+5.90 s | 2.89 |
| HOUHouvegnez | 33.7 | 184 | 12:57:40.46+6.01 s | – | – |
| KLBKalborn | 62.1 | 175 | 12:57:45.52+11.07 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 19.5 | 93 | 12:57:38.15+3.70 s | 12:57:40.80+6.35 s | 2.65 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 14.0 | 328 | 12:57:36.94+2.49 s | 12:57:39.41+4.96 s | 2.47 |