MARCHE-EN-FAMENNE (BE)
Quarry blast4 October 2018
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 12:04:562018-10-04
- UTC
- 10:04:562018-10-04
Main parameters
| Date and time | 2018-10-04 10:04:56 UTC 2018-10-04 12:04:56 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.183° N, 5.262° E Uncertainty ± 4.1 km |
| Event ID | ROB 7190 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-10-04 14:36:57 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
- 25.7 – 86.1km
- Mean velocity, P wave
- 5.7km/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 | 25.7 | 331 | 10:05:01.39+4.51 s | – | – |
| CLAClavier | 26.4 | 6 | 10:05:01.56+4.68 s | – | – |
| MRDMaredsous | 37.7 | 291 | 10:05:03.59+6.71 s | – | – |
| DOUDourbes | 48.7 | 259 | 10:05:04.93+8.05 s | 10:05:11.11+14.23 s | 6.18 |
| KLBKalborn | 61.2 | 98 | 10:05:07.36+10.48 s | – | – |
| WLFWalferdange | 86.1 | 132 | 10:05:12.18+15.30 s | – | – |
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