FERNELMONT (BE)
Quarry blast3 May 2017
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:16:462017-05-03
- UTC
- 12:16:462017-05-03
Main parameters
| Date and time | 2017-05-03 12:16:46 UTC 2017-05-03 14:16:46 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.514° N, 4.938° E Uncertainty ± 2.2 km |
| Event ID | ROB 5687 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-05-03 14:33:17 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
- 14
- Epicentral distance
- 17.9 – 80.7km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.3km/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: 14 measurements, root-mean-square deviation 0.46 s. S wave: 8 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)13 stations | |||||
| GESGesves | 17.9 | 143 | 12:16:49.16+2.22 s | 12:16:51.30+4.36 s | 2.14 |
| MRDMaredsous | 26.5 | 207 | 12:16:51.75+4.81 s | 12:16:54.99+8.05 s | 3.24 |
| CLAClavier | 28.0 | 112 | 12:16:51.26+4.32 s | 12:16:54.70+7.76 s | 3.44 |
| RCHRochefort | 44.9 | 153 | 12:16:54.38+7.44 s | 12:17:00.45+13.51 s | 6.07 |
| STISart Tilman | 45.1 | 80 | 12:16:55.34+8.40 s | – | – |
| SNFSeneffe | 46.4 | 270 | 12:16:54.31+7.37 s | – | – |
| UCCSUccle | 51.6 | 308 | 12:16:55.34+8.40 s | – | – |
| SKQSteenkerque | 62.6 | 284 | 12:16:57.71+10.77 s | 12:17:05.36+18.42 s | 7.65 |
| MEMSMembach | 76.7 | 82 | 12:17:00.12+13.18 s | 12:17:09.17+22.23 s | 9.05 |
| MEMHMembach | 76.7 | 82 | 12:17:00.14+13.20 s | 12:17:09.19+22.25 s | 9.05 |
| HOUHouvegnez | 77.9 | 103 | 12:16:59.82+12.88 s | – | – |
| MOLTMol | 78.6 | 8 | 12:17:01.39+14.45 s | – | – |
| MRGMont Rigi | 80.7 | 90 | 12:17:00.76+13.82 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 75.6 | 68 | 12:16:59.46+12.52 s | 12:17:09.38+22.44 s | 9.92 |