ANDENNE (BE)
Quarry blast8 February 2018
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 14:23:172018-02-08
- UTC
- 13:23:172018-02-08
Main parameters
| Date and time | 2018-02-08 13:23:17 UTC 2018-02-08 14:23:17 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.459° N, 5.018° E Uncertainty ± 0.5 km |
| Event ID | ROB 6295 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-02-08 14:55:23 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
- 7
- Epicentral distance
- 9.6 – 87.5km
- 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: 7 measurements, root-mean-square deviation 0.11 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)7 stations | |||||
| GESGesves | 9.6 | 149 | 13:23:18.93+1.77 s | – | – |
| CLAClavier | 20.7 | 102 | 13:23:21.04+3.88 s | 13:23:23.87+6.71 s | 2.83 |
| MRDMaredsous | 24.9 | 226 | 13:23:21.52+4.36 s | – | – |
| DOUDourbes | 50.5 | 217 | 13:23:26.16+9.00 s | 13:23:32.45+15.29 s | 6.29 |
| UCCSUccle | 59.8 | 309 | 13:23:27.78+10.62 s | 13:23:34.94+17.78 s | 7.16 |
| MEMSMembach | 72.3 | 76 | 13:23:29.71+12.55 s | – | – |
| KLBKalborn | 87.5 | 117 | 13:23:32.32+15.16 s | – | – |
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