CELLES (BE)
Quarry blast12 June 2019
- Magnitude
- 2.2ML
- Depth
- –
- Belgian time
- 12:28:102019-06-12
- UTC
- 10:28:102019-06-12
Main parameters
| Date and time | 2019-06-12 10:28:10 UTC 2019-06-12 12:28:10 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.751° N, 3.445° E Uncertainty ± 1.9 km |
| Event ID | ROB 8235 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-12 15:23:38 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
- 16
- Epicentral distance
- 46.3 – 182.0km
- Mean velocity, P wave
- 6.2km/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: 8 measurements, root-mean-square deviation 0.62 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)15 stations | |||||
| SKQSteenkerque | 46.3 | 104 | 10:28:19.11+9.00 s | – | – |
| BOUBougnies | 53.6 | 138 | 10:28:19.20+9.09 s | – | – |
| BRQBracquegnies | 57.4 | 121 | 10:28:20.32+10.21 s | – | – |
| RQRRonquières | 57.5 | 106 | 10:28:20.53+10.42 s | – | – |
| ZEVZevekote | 57.5 | 319 | 10:28:20.22+10.11 s | – | – |
| UCCBUccle | 64.8 | 85 | 10:28:23.22+13.11 s | 10:28:30.15+20.04 s | 6.93 |
| MRDMaredsous | 106.3 | 117 | 10:28:28.46+18.35 s | 10:28:42.28+32.17 s | 13.82 |
| DOUDourbes | 109.6 | 131 | 10:28:28.71+18.60 s | 10:28:43.14+33.03 s | 14.43 |
| GESGesves | 123.3 | 109 | 10:28:31.48+21.37 s | 10:28:47.91+37.80 s | 16.43 |
| MOLSMol | 126.2 | 65 | 10:28:30.70+20.59 s | – | – |
| MOLTMol | 126.3 | 65 | 10:28:32.48+22.37 s | 10:28:46.88+36.77 s | 14.40 |
| CLAClavier | 136.6 | 105 | 10:28:33.54+23.43 s | 10:28:50.96+40.85 s | 17.42 |
| EBNEben-Emael | 157.6 | 87 | 10:28:38.38+28.27 s | – | – |
| MEMSMembach | 182.0 | 94 | 10:28:39.65+29.54 s | 10:29:01.82+51.71 s | 22.17 |
| MEMHMembach | 182.0 | 94 | 10:28:39.79+29.68 s | 10:29:00.41+50.30 s | 20.62 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 175.5 | 89 | 10:28:37.36+27.25 s | 10:28:59.50+49.39 s | 22.14 |