ANDENNE (BE)
Quarry blast4 October 2018
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:11:132018-10-04
- UTC
- 12:11:132018-10-04
Main parameters
| Date and time | 2018-10-04 12:11:13 UTC 2018-10-04 14:11:13 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.456° N, 5.013° E Uncertainty ± 1.3 km |
| Event ID | ROB 7195 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-10-04 14:37:09 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
- 9.5 – 87.6km
- Mean velocity, P wave
- 5.8km/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 0.24 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 | |||||
| GESGesves | 9.5 | 146 | 12:11:15.14+1.80 s | 12:11:16.60+3.26 s | 1.46 |
| CLAClavier | 21.0 | 101 | 12:11:17.41+4.07 s | – | – |
| MRDMaredsous | 24.5 | 225 | 12:11:17.43+4.09 s | – | – |
| DOUDourbes | 50.0 | 217 | 12:11:22.44+9.10 s | – | – |
| MRGMont Rigi | 75.6 | 85 | 12:11:26.28+12.94 s | – | – |
| KLBKalborn | 87.6 | 116 | 12:11:28.78+15.44 s | – | – |
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