FERNELMONT (BE)
Quarry blast12 May 2016
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 13:43:272016-05-12
- UTC
- 11:43:272016-05-12
Main parameters
| Date and time | 2016-05-12 11:43:27 UTC 2016-05-12 13:43:27 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.522° N, 4.943° E Uncertainty ± 2.3 km |
| Event ID | ROB 5492 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-05-12 14:33:52 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
- 13
- Epicentral distance
- 18.3 – 128.8km
- Mean velocity, P wave
- 5.6km/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: 12 measurements, root-mean-square deviation 0.26 s. S wave: 6 measurements, root-mean-square deviation 0.43 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)12 stations | |||||
| GESGesves | 18.3 | 146 | 11:43:30.03+2.70 s | 11:43:31.84+4.51 s | 1.81 |
| MRDMaredsous | 27.5 | 207 | 11:43:32.11+4.78 s | 11:43:35.59+8.26 s | 3.48 |
| CLAClavier | 27.9 | 114 | 11:43:31.65+4.32 s | 11:43:35.13+7.80 s | 3.48 |
| RCHRochefort | 45.6 | 154 | 11:43:34.97+7.64 s | 11:43:41.10+13.77 s | 6.13 |
| UCCSUccle | 51.3 | 307 | 11:43:36.12+8.79 s | – | – |
| DOUDourbes | 53.6 | 208 | 11:43:36.40+9.07 s | – | – |
| EBNEben-Emael | 60.3 | 59 | 11:43:37.83+10.50 s | – | – |
| SKQSteenkerque | 62.7 | 283 | 11:43:38.23+10.90 s | – | – |
| MEMSMembach | 76.2 | 82 | 11:43:40.90+13.57 s | – | – |
| MEMHMembach | 76.2 | 82 | 11:43:40.96+13.63 s | 11:43:49.54+22.21 s | 8.58 |
| MOLTMol | 77.6 | 7 | 11:43:40.86+13.53 s | – | – |
| WLFWalferdange | 128.8 | 137 | – | 11:44:03.49+36.16 s | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 74.9 | 69 | 11:43:39.74+12.41 s | 11:43:48.86+21.53 s | 9.12 |