NAMUR (BE)
Quarry blast18 May 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 14:24:342022-05-18
- UTC
- 12:24:342022-05-18
Main parameters
| Date and time | 2022-05-18 12:24:34 UTC 2022-05-18 14:24:34 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.498° N, 4.977° E Uncertainty ± 0.7 km |
| Event ID | ROB 16210 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-05-18 22:31:40 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
- 9
- Epicentral distance
- 14.8 – 92.0km
- 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: 9 measurements, root-mean-square deviation 0.25 s. S wave: 9 measurements, root-mean-square deviation 0.50 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)9 stations | |||||
| GESGesves | 14.8 | 148 | 12:24:36.32+2.29 s | 12:24:38.16+4.13 s | 1.84 |
| CLAClavier | 24.7 | 111 | 12:24:38.47+4.44 s | 12:24:41.99+7.96 s | 3.52 |
| MRDMaredsous | 26.4 | 214 | 12:24:38.93+4.90 s | 12:24:42.31+8.28 s | 3.38 |
| TGATangissart | 34.4 | 290 | 12:24:39.97+5.94 s | 12:24:44.64+10.61 s | 4.67 |
| RCHRochefort | 42.1 | 155 | 12:24:41.60+7.57 s | 12:24:46.93+12.90 s | 5.33 |
| DOUDourbes | 52.5 | 211 | 12:24:43.61+9.58 s | 12:24:49.99+15.96 s | 6.38 |
| MEMSMembach | 74.2 | 80 | 12:24:47.16+13.13 s | 12:24:55.72+21.69 s | 8.56 |
| MRGMont Rigi | 77.9 | 89 | 12:24:47.80+13.77 s | 12:24:57.57+23.54 s | 9.77 |
| KLBKalborn | 92.0 | 118 | 12:24:49.99+15.96 s | 12:25:00.08+26.05 s | 10.09 |