DINANT (BE)
Quarry blast17 April 2018
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 10:29:242018-04-17
- UTC
- 08:29:242018-04-17
Main parameters
| Date and time | 2018-04-17 08:29:24 UTC 2018-04-17 10:29:24 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.286° N, 4.906° E Uncertainty ± 1.0 km |
| Event ID | ROB 6490 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-04-17 17:43:38 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
- 4
- Epicentral distance
- 10.0 – 31.8km
- Mean velocity, P wave
- 5.4km/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: 4 measurements, root-mean-square deviation 0.02 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)4 stations | |||||
| MRDMaredsous | 10.0 | 280 | 08:29:26.16+1.86 s | 08:29:27.66+3.36 s | 1.50 |
| GESGesves | 17.0 | 49 | 08:29:27.41+3.11 s | 08:29:30.04+5.74 s | 2.63 |
| DOUDourbes | 30.7 | 226 | 08:29:30.02+5.72 s | – | – |
| CLAClavier | 31.8 | 62 | 08:29:30.23+5.93 s | – | – |
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