NAMUR (BE)
Known mine explosion25 June 2019
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 09:04:072019-06-25
- UTC
- 07:04:072019-06-25
Main parameters
| Date and time | 2019-06-25 07:04:07 UTC 2019-06-25 09:04:07 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.490° N, 4.921° E Uncertainty ± 3.4 km |
| Event ID | ROB 8290 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-26 12:12:45 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
- 4
- Epicentral distance
- 16.6 – 49.7km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.3km/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: 4 measurements, root-mean-square deviation 0.20 s. S wave: 4 measurements, root-mean-square deviation 0.27 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)4 stations | |||||
| GESGesves | 16.6 | 135 | 07:04:09.92+2.77 s | 07:04:12.62+5.47 s | 2.70 |
| MRDMaredsous | 23.6 | 208 | 07:04:11.43+4.28 s | 07:04:14.57+7.42 s | 3.14 |
| CLAClavier | 28.2 | 106 | 07:04:12.09+4.94 s | 07:04:16.44+9.29 s | 4.35 |
| DOUDourbes | 49.7 | 208 | 07:04:16.16+9.01 s | 07:04:22.31+15.16 s | 6.15 |