PECQ (BE)
Quarry blast16 January 2023
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 13:00:162023-01-16
- UTC
- 12:00:162023-01-16
Main parameters
| Date and time | 2023-01-16 12:00:16 UTC 2023-01-16 13:00:16 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.659° N, 3.363° E Uncertainty ± 8.7 km |
| Event ID | ROB 18385 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-01-18 10:20:07 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
- 34.4 – 107.7km
- Mean velocity, P wave
- 6.1km/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 0.35 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 | |||||
| LESLessines | 34.4 | 80 | 12:00:23.66+6.75 s | 12:00:27.54+10.63 s | 3.88 |
| SKQSteenkerque | 50.7 | 91 | 12:00:25.70+8.79 s | 12:00:31.66+14.75 s | 5.96 |
| BRQBracquegnies | 58.2 | 110 | 12:00:26.94+10.03 s | – | – |
| RQRRonquières | 61.3 | 95 | 12:00:27.27+10.36 s | – | – |
| TGATangissart | 82.2 | 94 | 12:00:30.59+13.68 s | – | – |
| DOUDourbes | 107.7 | 125 | 12:00:35.64+18.73 s | 12:00:47.92+31.01 s | 12.28 |
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