FRASNES-LEZ-ANVAING (BE)
Quarry blast6 September 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 13:00:202022-09-06
- UTC
- 11:00:202022-09-06
Main parameters
| Date and time | 2022-09-06 11:00:20 UTC 2022-09-06 13:00:20 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.719° N, 3.596° E Uncertainty ± 9.2 km |
| Event ID | ROB 17025 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-09-07 09:43:22 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
- 35.1 – 112.0km
- Mean velocity, P wave
- 6.0km/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 0.23 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)6 stations | |||||
| SKQSteenkerque | 35.1 | 103 | 11:00:27.12+6.31 s | 11:00:31.41+10.60 s | 4.29 |
| RQRRonquières | 46.2 | 106 | 11:00:29.18+8.37 s | – | – |
| SNFSeneffe | 53.9 | 115 | 11:00:29.94+9.13 s | – | – |
| MRDMaredsous | 95.2 | 119 | 11:00:36.75+15.94 s | – | – |
| DOUDourbes | 99.3 | 134 | 11:00:38.02+17.21 s | 11:00:50.56+29.75 s | 12.54 |
| GESGesves | 112.0 | 109 | 11:00:39.94+19.13 s | 11:00:53.83+33.02 s | 13.89 |
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