WELLIN (BE)
Quarry blast12 November 2018
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 15:41:332018-11-12
- UTC
- 14:41:332018-11-12
Main parameters
| Date and time | 2018-11-12 14:41:33 UTC 2018-11-12 15:41:33 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.065° N, 5.165° E Uncertainty ± 2.2 km |
| Event ID | ROB 7390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-21 15:21:46 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
- 8
- Epicentral distance
- 11.0 – 89.2km
- Mean velocity, P wave
- 6.9km/s
- Mean velocity, S wave
- 3.5km/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 1.77 s. S wave: 4 measurements, root-mean-square deviation 0.66 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)8 stations | |||||
| RCHRochefort | 11.0 | 24 | 14:41:34.90+1.58 s | 14:41:36.28+2.96 s | 1.38 |
| GESGesves | 36.0 | 351 | 14:41:39.86+6.54 s | 14:41:45.34+12.02 s | 5.48 |
| MRDMaredsous | 38.7 | 313 | 14:41:39.92+6.60 s | – | – |
| CLAClavier | 40.6 | 14 | 14:41:40.10+6.78 s | 14:41:45.46+12.14 s | 5.36 |
| DOUDourbes | 40.9 | 275 | 14:41:40.43+7.11 s | – | – |
| KLBKalborn | 67.7 | 86 | 14:41:45.50+12.18 s | 14:41:53.60+20.28 s | 8.10 |
| MEMHMembach | 85.3 | 45 | 14:41:48.91+15.59 s | – | – |
| EBNEben-Emael | 89.2 | 24 | 14:41:43.10+9.78 s | – | – |