NAMUR (BE)
Quarry blast9 November 2018
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:18:292018-11-09
- UTC
- 11:18:292018-11-09
Main parameters
| Date and time | 2018-11-09 11:18:29 UTC 2018-11-09 12:18:29 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.478° N, 4.960° E Uncertainty ± 2.9 km |
| Event ID | ROB 7365 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-11-20 14:52:01 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
- 6
- Epicentral distance
- 13.8 – 92.1km
- 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 0.39 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 | 13.8 | 139 | 11:18:32.95+3.19 s | 11:18:34.69+4.93 s | 1.74 |
| MRDMaredsous | 23.9 | 215 | 11:18:34.27+4.51 s | 11:18:37.14+7.38 s | 2.87 |
| CLAClavier | 25.2 | 105 | 11:18:33.59+3.83 s | 11:18:37.27+7.51 s | 3.68 |
| RCHRochefort | 40.7 | 152 | 11:18:36.96+7.20 s | – | – |
| MEMHMembach | 75.8 | 79 | 11:18:42.98+13.22 s | – | – |
| KLBKalborn | 92.1 | 117 | 11:18:45.93+16.17 s | – | – |
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