FERNELMONT (BE)
Quarry blast8 October 2019
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 13:22:322019-10-08
- UTC
- 11:22:322019-10-08
Main parameters
| Date and time | 2019-10-08 11:22:32 UTC 2019-10-08 13:22:32 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.528° N, 4.966° E Uncertainty ± 1.1 km |
| Event ID | ROB 8725 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-10-11 11:27:43 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
- 18.1 – 94.3km
- 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: 16 measurements, root-mean-square deviation 0.34 s. S wave: 6 measurements, root-mean-square deviation 0.56 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)15 stations | |||||
| GESGesves | 18.1 | 152 | 11:22:35.76+2.94 s | 11:22:37.88+5.06 s | 2.12 |
| CLAClavier | 26.8 | 117 | 11:22:37.74+4.92 s | 11:22:41.37+8.55 s | 3.63 |
| MRDMaredsous | 28.8 | 209 | 11:22:38.17+5.35 s | 11:22:42.18+9.36 s | 4.01 |
| RCHRochefort | 45.5 | 156 | 11:22:40.87+8.05 s | 11:22:46.66+13.84 s | 5.79 |
| LCHLa Chartreuse | 46.5 | 74 | 11:22:40.47+7.65 s | – | – |
| UCCSUccle | 52.3 | 305 | 11:22:41.41+8.59 s | – | – |
| UCCBUccle | 52.3 | 305 | 11:22:41.61+8.79 s | – | – |
| DOUDourbes | 54.9 | 209 | 11:22:42.23+9.41 s | 11:22:49.64+16.82 s | 7.41 |
| SKQSteenkerque | 64.2 | 282 | 11:22:43.56+10.74 s | – | – |
| MEMSMembach | 74.5 | 83 | 11:22:46.02+13.20 s | – | – |
| MEMHMembach | 74.5 | 83 | 11:22:46.02+13.20 s | – | – |
| HOUHouvegnez | 76.3 | 104 | 11:22:46.49+13.67 s | – | – |
| MOLSMol | 76.7 | 6 | 11:22:45.95+13.13 s | – | – |
| MOLTMol | 76.8 | 6 | 11:22:46.22+13.40 s | – | – |
| KLBKalborn | 94.3 | 120 | 11:22:49.67+16.85 s | 11:22:59.87+27.05 s | 10.20 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.2 | 69 | 11:22:45.86+13.04 s | – | – |