PHILIPPEVILLE (BE)
Quarry blast21 January 2019
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:08:022019-01-21
- UTC
- 11:08:022019-01-21
Main parameters
| Date and time | 2019-01-21 11:08:02 UTC 2019-01-21 12:08:02 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.183° N, 4.608° E Uncertainty ± 0.6 km |
| Event ID | ROB 7665 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-21 14:39:17 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
- 9.8 – 70.5km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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 0.13 s. S wave: 5 measurements, root-mean-square deviation 0.15 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 | 9.8 | 185 | 11:08:04.40+1.78 s | 11:08:06.09+3.47 s | 1.69 |
| MRDMaredsous | 17.5 | 41 | 11:08:05.88+3.26 s | 11:08:08.23+5.61 s | 2.35 |
| GESGesves | 40.9 | 56 | 11:08:10.04+7.42 s | 11:08:15.24+12.62 s | 5.20 |
| RCHRochefort | 44.3 | 94 | 11:08:10.54+7.92 s | 11:08:16.14+13.52 s | 5.60 |
| BOUBougnies | 52.5 | 296 | 11:08:11.80+9.18 s | – | – |
| CLAClavier | 56.0 | 62 | 11:08:12.53+9.91 s | 11:08:19.30+16.68 s | 6.77 |
| UCCSUccle | 70.5 | 346 | 11:08:14.86+12.24 s | – | – |