YVOIR (BE)
Quarry blast24 October 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:29:372019-10-24
- UTC
- 08:29:372019-10-24
Main parameters
| Date and time | 2019-10-24 08:29:37 UTC 2019-10-24 10:29:37 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.291° N, 4.910° E Uncertainty ± 0.9 km |
| Event ID | ROB 8775 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-10-24 15:08:10 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
- 5
- Epicentral distance
- 10.2 – 31.3km
- Mean velocity, P wave
- 6.3km/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: 5 measurements, root-mean-square deviation 0.17 s. S wave: 4 measurements, root-mean-square deviation 0.21 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)5 stations | |||||
| MRDMaredsous | 10.2 | 277 | 08:29:39.62+1.95 s | 08:29:41.45+3.78 s | 1.83 |
| GESGesves | 16.4 | 50 | 08:29:40.74+3.07 s | 08:29:43.48+5.81 s | 2.74 |
| RCHRochefort | 27.2 | 124 | 08:29:42.73+5.06 s | 08:29:46.13+8.46 s | 3.40 |
| DOUDourbes | 31.3 | 226 | 08:29:43.10+5.43 s | 08:29:47.61+9.94 s | 4.51 |
| CLAClavier | 31.3 | 63 | 08:29:43.34+5.67 s | – | – |