FRASNES-LEZ-ANVAING (BE)
Quarry blast16 November 2022
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 13:00:182022-11-16
- UTC
- 12:00:182022-11-16
Main parameters
| Date and time | 2022-11-16 12:00:18 UTC 2022-11-16 13:00:18 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.714° N, 3.539° E Uncertainty ± 32.9 km |
| Event ID | ROB 17740 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:45:12 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
- 5
- Epicentral distance
- 21.5 – 101.9km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.4km/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: 5 measurements, root-mean-square deviation 0.69 s. S wave: 5 measurements, root-mean-square deviation 0.79 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)5 stations | |||||
| LESLessines | 21.5 | 91 | 12:00:21.69+3.64 s | 12:00:26.51+8.46 s | 4.82 |
| SKQSteenkerque | 38.9 | 101 | 12:00:24.75+6.70 s | 12:00:30.36+12.31 s | 5.61 |
| RQRRonquières | 50.0 | 104 | 12:00:26.63+8.58 s | 12:00:33.16+15.11 s | 6.53 |
| SNFSeneffe | 57.4 | 113 | 12:00:27.10+9.05 s | 12:00:34.71+16.66 s | 7.61 |
| DOUDourbes | 101.9 | 132 | 12:00:36.39+18.34 s | 12:00:48.19+30.14 s | 11.80 |