YVOIR (BE)
Quarry blast13 November 2018
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 11:51:222018-11-13
- UTC
- 10:51:222018-11-13
Main parameters
| Date and time | 2018-11-13 10:51:22 UTC 2018-11-13 11:51:22 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.345° N, 4.990° E Uncertainty ± 5.0 km |
| Event ID | ROB 7340 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-20 13:54:02 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
- 8.2 – 78.2km
- Mean velocity, P wave
- 6.3km/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 0.13 s. S wave: 5 measurements, root-mean-square deviation 0.08 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 | |||||
| GESGesves | 8.2 | 57 | 10:51:24.59+1.88 s | 10:51:25.93+3.22 s | 1.34 |
| MRDMaredsous | 16.5 | 253 | 10:51:26.20+3.49 s | 10:51:28.30+5.59 s | 2.10 |
| CLAClavier | 23.7 | 69 | 10:51:27.48+4.77 s | 10:51:30.34+7.63 s | 2.86 |
| RCHRochefort | 27.0 | 141 | 10:51:27.68+4.97 s | 10:51:31.09+8.38 s | 3.41 |
| DOUDourbes | 39.6 | 226 | 10:51:29.89+7.18 s | 10:51:34.82+12.11 s | 4.93 |
| UCCBUccle | 67.2 | 319 | 10:51:34.23+11.52 s | – | – |
| EBNEben-Emael | 70.1 | 44 | 10:51:34.56+11.85 s | – | – |
| MEMHMembach | 78.2 | 68 | 10:51:35.96+13.25 s | – | – |