NANDRIN (BE)
Quarry blast11 July 2022
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 17:23:292022-07-11
- UTC
- 15:23:292022-07-11
Main parameters
| Date and time | 2022-07-11 15:23:29 UTC 2022-07-11 17:23:29 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.524° N, 5.391° E Uncertainty ± 2.0 km |
| Event ID | ROB 16575 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-21 23:31:56 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
- 13.3 – 74.2km
- Mean velocity, P wave
- 5.9km/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: 9 measurements, root-mean-square deviation 0.51 s. S wave: 8 measurements, root-mean-square deviation 0.72 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)8 stations | |||||
| CLAClavier | 13.3 | 209 | 15:23:32.05+2.32 s | 15:23:34.42+4.69 s | 2.37 |
| STISart Tilman | 13.9 | 62 | 15:23:32.18+2.45 s | 15:23:34.51+4.78 s | 2.33 |
| LCHLa Chartreuse | 19.5 | 49 | 15:23:33.33+3.60 s | 15:23:37.71+7.98 s | 4.38 |
| GESGesves | 26.6 | 234 | 15:23:33.93+4.20 s | 15:23:38.49+8.76 s | 4.56 |
| MEMSMembach | 44.8 | 78 | 15:23:37.62+7.89 s | 15:23:44.11+14.38 s | 6.49 |
| MRDMaredsous | 50.7 | 241 | 15:23:38.34+8.61 s | – | – |
| KLBKalborn | 69.6 | 132 | 15:23:42.52+12.79 s | 15:23:50.26+20.53 s | 7.74 |
| DOUDourbes | 74.2 | 230 | 15:23:43.47+13.74 s | 15:23:52.57+22.84 s | 9.10 |
| Dutch seismic network (KNMI)1 station | |||||
| TERZTerziet | 44.7 | 54 | 15:23:37.18+7.45 s | 15:23:43.00+13.27 s | 5.82 |