NAMUR (BE)
Quarry blast16 February 2018
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 14:19:532018-02-16
- UTC
- 13:19:532018-02-16
Main parameters
| Date and time | 2018-02-16 13:19:53 UTC 2018-02-16 14:19:53 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.495° N, 4.979° E Uncertainty ± 1.6 km |
| Event ID | ROB 6330 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-02-19 13:28:24 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
- 8
- Epicentral distance
- 14.4 – 91.7km
- Mean velocity, P wave
- 5.6km/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: 8 measurements, root-mean-square deviation 0.31 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)8 stations | |||||
| GESGesves | 14.4 | 148 | 13:19:55.37+2.37 s | 13:19:57.49+4.49 s | 2.12 |
| CLAClavier | 24.4 | 110 | 13:19:57.12+4.12 s | – | – |
| MRDMaredsous | 26.2 | 215 | 13:19:57.83+4.83 s | – | – |
| DOUDourbes | 52.2 | 212 | 13:20:02.67+9.67 s | – | – |
| SKQSteenkerque | 66.0 | 285 | 13:20:04.17+11.17 s | – | – |
| HOUHouvegnez | 74.5 | 102 | 13:20:05.85+12.85 s | – | – |
| MRGMont Rigi | 77.8 | 88 | 13:20:07.03+14.03 s | – | – |
| KLBKalborn | 91.7 | 118 | 13:20:09.43+16.43 s | 13:20:19.23+26.23 s | 9.80 |
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