MARCHE-EN-FAMENNE (BE)
Quarry blast2 July 2019
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:13:202019-07-02
- UTC
- 10:13:202019-07-02
Main parameters
| Date and time | 2019-07-02 10:13:20 UTC 2019-07-02 12:13:20 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.182° N, 5.251° E Uncertainty ± 0.6 km |
| Event ID | ROB 8305 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-03 09:11:21 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
- 25.5 – 62.0km
- Mean velocity, P wave
- 6.2km/s
- Mean velocity, S wave
- 3.5km/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 0.15 s. S wave: 4 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)6 stations | |||||
| GESGesves | 25.5 | 333 | 10:13:25.10+4.77 s | 10:13:28.19+7.86 s | 3.09 |
| CLAClavier | 26.6 | 8 | 10:13:25.25+4.92 s | 10:13:28.84+8.51 s | 3.59 |
| MRDMaredsous | 37.0 | 291 | 10:13:27.21+6.88 s | 10:13:31.70+11.37 s | 4.49 |
| DOUDourbes | 47.9 | 259 | 10:13:28.78+8.45 s | 10:13:34.81+14.48 s | 6.03 |
| HOUHouvegnez | 57.1 | 70 | 10:13:29.96+9.63 s | – | – |
| KLBKalborn | 62.0 | 98 | 10:13:31.15+10.82 s | – | – |