PHILIPPEVILLE (BE)
Quarry blast15 June 2021
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 12:04:162021-06-15
- UTC
- 10:04:162021-06-15
Main parameters
| Date and time | 2021-06-15 10:04:16 UTC 2021-06-15 12:04:16 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.206° N, 4.535° E Uncertainty ± 1.7 km |
| Event ID | ROB 13700 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-06-18 11:16:24 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
- 7
- Epicentral distance
- 13.1 – 58.9km
- 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: 7 measurements, root-mean-square deviation 0.38 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)7 stations | |||||
| DOUDourbes | 13.1 | 161 | 10:04:19.02+2.67 s | 10:04:20.63+4.28 s | 1.61 |
| MRDMaredsous | 19.8 | 57 | 10:04:19.52+3.17 s | 10:04:22.69+6.34 s | 3.17 |
| TGATangissart | 44.4 | 359 | 10:04:24.08+7.73 s | – | – |
| BOUBougnies | 46.7 | 296 | 10:04:24.82+8.47 s | – | – |
| RQRRonquières | 49.6 | 334 | 10:04:25.05+8.70 s | – | – |
| RCHRochefort | 49.8 | 96 | 10:04:25.29+8.94 s | 10:04:32.14+15.79 s | 6.85 |
| SKQSteenkerque | 58.9 | 327 | 10:04:25.74+9.39 s | – | – |
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