PHILIPPEVILLE (BE)
Quarry blast14 February 2023
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 12:24:432023-02-14
- UTC
- 11:24:432023-02-14
Main parameters
| Date and time | 2023-02-14 11:24:43 UTC 2023-02-14 12:24:43 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.181° N, 4.504° E Uncertainty ± 9.1 km |
| Event ID | ROB 18695 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2023-02-22 00:27:32 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
- 4
- Epicentral distance
- 11.6 – 47.4km
- Mean velocity, P wave
- 4.7km/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: 4 measurements, root-mean-square deviation 0.53 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)4 stations | |||||
| DOUDourbes | 11.6 | 146 | 11:24:43.53+0.47 s | 11:24:48.00+4.94 s | 4.47 |
| MRDMaredsous | 23.1 | 54 | 11:24:47.39+4.33 s | – | – |
| SNFSeneffe | 39.9 | 337 | 11:24:49.80+6.74 s | – | – |
| BLRGBlaregnies | 47.4 | 294 | 11:24:51.72+8.66 s | – | – |
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