PROFONDEVILLE (BE)
Quarry blast12 July 2018
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 10:30:122018-07-12
- UTC
- 08:30:122018-07-12
Main parameters
| Date and time | 2018-07-12 08:30:12 UTC 2018-07-12 10:30:12 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.394° N, 4.846° E Uncertainty ± 1.3 km |
| Event ID | ROB 6950 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-12 11:24:01 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
- 11.6 – 51.4km
- 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 0.28 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 | 11.6 | 209 | 08:30:14.74+2.66 s | 08:30:15.95+3.87 s | 1.21 |
| GESGesves | 17.2 | 93 | 08:30:15.05+2.97 s | 08:30:17.69+5.61 s | 2.64 |
| CLAClavier | 32.5 | 85 | 08:30:18.38+6.30 s | 08:30:22.13+10.05 s | 3.75 |
| DOUDourbes | 37.7 | 208 | 08:30:18.80+6.72 s | – | – |
| BRQBracquegnies | 51.4 | 281 | 08:30:20.94+8.86 s | – | – |
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