PHILIPPEVILLE (BE)
Quarry blast10 May 2021
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 15:54:182021-05-10
- UTC
- 13:54:182021-05-10
Main parameters
| Date and time | 2021-05-10 13:54:18 UTC 2021-05-10 15:54:18 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.209° N, 4.540° E Uncertainty ± 2.3 km |
| Event ID | ROB 13380 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-05-10 16:54:58 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
- 13.3 – 58.9km
- Mean velocity, P wave
- 5.9km/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 0.32 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 | |||||
| DOUDourbes | 13.3 | 163 | 13:54:20.70+2.54 s | 13:54:22.71+4.55 s | 2.01 |
| MRDMaredsous | 19.3 | 57 | 13:54:21.31+3.15 s | 13:54:24.55+6.39 s | 3.24 |
| GESGesves | 43.6 | 63 | 13:54:25.09+6.93 s | – | – |
| RCHRochefort | 49.5 | 97 | 13:54:26.44+8.28 s | 13:54:34.40+16.24 s | 7.96 |
| SKQSteenkerque | 58.9 | 326 | 13:54:28.55+10.39 s | – | – |
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