GESVES (BE)
Quarry blast19 August 2019
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 16:22:532019-08-19
- UTC
- 14:22:532019-08-19
Main parameters
| Date and time | 2019-08-19 14:22:53 UTC 2019-08-19 16:22:53 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.445° N, 5.011° E Uncertainty ± 3.0 km |
| Event ID | ROB 8550 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-21 13:26:44 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
- 6
- Epicentral distance
- 20.9 – 69.7km
- Mean velocity, P wave
- 5.4km/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: 6 measurements, root-mean-square deviation 0.70 s. S wave: 5 measurements, root-mean-square deviation 0.65 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)6 stations | |||||
| CLAClavier | 20.9 | 98 | 14:22:55.89+2.81 s | 14:22:59.37+6.29 s | 3.48 |
| MRDMaredsous | 23.5 | 227 | 14:22:56.07+2.99 s | 14:22:59.91+6.83 s | 3.84 |
| RCHRochefort | 35.8 | 154 | 14:22:57.79+4.71 s | 14:23:04.45+11.37 s | 6.66 |
| DOUDourbes | 49.0 | 217 | 14:23:00.75+7.67 s | 14:23:07.35+14.27 s | 6.60 |
| UCCBUccle | 60.4 | 311 | 14:23:04.41+11.33 s | – | – |
| SKQSteenkerque | 69.7 | 289 | 14:23:05.49+12.41 s | 14:23:13.20+20.12 s | 7.71 |