FERNELMONT (BE)
Quarry blast24 January 2023
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 14:19:142023-01-24
- UTC
- 13:19:142023-01-24
Main parameters
| Date and time | 2023-01-24 13:19:14 UTC 2023-01-24 14:19:14 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.513° N, 4.973° E Uncertainty ± 0.9 km |
| Event ID | ROB 18485 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-01-30 12:15:00 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
- 7
- Epicentral distance
- 25.6 – 96.0km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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: 7 measurements, root-mean-square deviation 0.28 s. S wave: 4 measurements, root-mean-square deviation 0.22 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 | |||||
| CLAClavier | 25.6 | 114 | 13:19:18.79+4.33 s | 13:19:22.37+7.91 s | 3.58 |
| MRDMaredsous | 27.6 | 212 | 13:19:19.49+5.03 s | 13:19:23.12+8.66 s | 3.63 |
| TGATangissart | 33.5 | 288 | 13:19:20.47+6.01 s | 13:19:24.62+10.16 s | 4.15 |
| HOUHouvegnez | 75.5 | 103 | 13:19:27.48+13.02 s | – | – |
| MRGMont Rigi | 78.2 | 90 | 13:19:28.58+14.12 s | – | – |
| KLBKalborn | 93.1 | 119 | 13:19:31.05+16.59 s | – | – |
| Bensberg seismic network (University of Cologne, Germany)1 station | |||||
| KLLKalltalsperre | 96.0 | 81 | 13:19:31.03+16.57 s | 13:19:42.19+27.73 s | 11.16 |