FERNELMONT (BE)
Quarry blast31 January 2017
- Magnitude
- 1.9ML
- Depth
- –
- Belgian time
- 14:24:102017-01-31
- UTC
- 13:24:102017-01-31
Main parameters
| Date and time | 2017-01-31 13:24:10 UTC 2017-01-31 14:24:10 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.539° N, 4.957° E Uncertainty ± 3.1 km |
| Event ID | ROB 5626 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-01-31 14:36:40 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
- 10
- Epicentral distance
- 19.5 – 77.2km
- Mean velocity, P wave
- 5.2km/s
- Mean velocity, S wave
- 3.2km/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: 10 measurements, root-mean-square deviation 0.31 s. S wave: 4 measurements, root-mean-square deviation 0.51 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)9 stations | |||||
| GESGesves | 19.5 | 152 | 13:24:12.66+2.60 s | – | – |
| CLAClavier | 27.9 | 119 | 13:24:14.41+4.35 s | 13:24:18.27+8.21 s | 3.86 |
| MRDMaredsous | 29.6 | 207 | 13:24:15.10+5.04 s | 13:24:17.49+7.43 s | 2.39 |
| RCHRochefort | 46.9 | 156 | 13:24:17.37+7.31 s | 13:24:23.79+13.73 s | 6.42 |
| SNFSeneffe | 47.9 | 266 | 13:24:18.60+8.54 s | – | – |
| RQRRonquières | 52.4 | 278 | 13:24:19.41+9.35 s | – | – |
| DOUDourbes | 55.8 | 208 | 13:24:19.84+9.78 s | 13:24:26.87+16.81 s | 7.03 |
| SKQSteenkerque | 63.3 | 281 | 13:24:21.01+10.95 s | – | – |
| HOUHouvegnez | 77.2 | 105 | 13:24:23.91+13.85 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.3 | 70 | 13:24:22.79+12.73 s | – | – |