FLORENNES (BE)
Quarry blast7 November 2018
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 11:33:142018-11-07
- UTC
- 10:33:142018-11-07
Main parameters
| Date and time | 2018-11-07 10:33:14 UTC 2018-11-07 11:33:14 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.270° N, 4.571° E Uncertainty ± 0.8 km |
| Event ID | ROB 7400 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-21 15:27:47 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
- 14.5 – 48.5km
- Mean velocity, P wave
- 6.1km/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 0.12 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 | 14.5 | 76 | 10:33:17.09+2.77 s | 10:33:18.45+4.13 s | 1.36 |
| DOUDourbes | 19.5 | 175 | 10:33:18.07+3.75 s | 10:33:20.61+6.29 s | 2.54 |
| GESGesves | 38.9 | 71 | 10:33:21.43+7.11 s | – | – |
| RQRRonquières | 44.7 | 327 | 10:33:22.12+7.80 s | – | – |
| RCHRochefort | 48.5 | 105 | 10:33:22.70+8.38 s | 10:33:28.78+14.46 s | 6.08 |
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