CELLES (BE)
Quarry blast28 July 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:30:342022-07-28
- UTC
- 10:30:342022-07-28
Main parameters
| Date and time | 2022-07-28 10:30:34 UTC 2022-07-28 12:30:34 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.743° N, 3.409° E Uncertainty ± 34.7 km |
| Event ID | ROB 16705 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-08 11:12:12 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
- 48.5 – 110.9km
- Mean velocity, P wave
- 5.8km/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 0.30 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 | |||||
| SKQSteenkerque | 48.5 | 102 | 10:30:43.66+8.78 s | 10:30:49.78+14.90 s | 6.12 |
| BRQBracquegnies | 59.1 | 119 | 10:30:44.74+9.86 s | – | – |
| RQRRonquières | 59.6 | 104 | 10:30:45.32+10.44 s | – | – |
| SNFSeneffe | 67.0 | 112 | 10:30:46.10+11.22 s | 10:30:54.86+19.98 s | 8.76 |
| DOUDourbes | 110.9 | 130 | 10:30:54.18+19.30 s | – | – |
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