ESTAIMPUIS (BE)
Quarry blast28 October 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:01:352022-10-28
- UTC
- 10:01:352022-10-28
Main parameters
| Date and time | 2022-10-28 10:01:35 UTC 2022-10-28 12:01:35 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.673° N, 3.326° E Uncertainty ± 8.9 km |
| Event ID | ROB 17585 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-11-21 14:35:22 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
- 8
- Epicentral distance
- 36.8 – 142.8km
- Mean velocity, P wave
- 5.5km/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: 6 measurements, root-mean-square deviation 0.59 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | |||||
| LESLessines | 36.8 | 83 | 10:01:40.75+5.74 s | 10:01:45.99+10.98 s | 5.24 |
| SKQSteenkerque | 53.4 | 93 | 10:01:44.15+9.14 s | 10:01:50.15+15.14 s | 6.00 |
| BRQBracquegnies | 61.2 | 110 | 10:01:45.56+10.55 s | – | – |
| SNFSeneffe | 70.2 | 104 | 10:01:46.49+11.48 s | – | – |
| MRDMaredsous | 110.3 | 111 | 10:01:53.31+18.30 s | 10:02:06.68+31.67 s | 13.37 |
| DOUDourbes | 110.8 | 125 | 10:01:55.25+20.24 s | – | – |
| GESGesves | 128.9 | 104 | 10:01:57.61+22.60 s | – | – |
| CLAClavier | 142.8 | 101 | 10:01:59.00+23.99 s | – | – |