LOYERS(BE)
Known mine explosion2 April 2015
- Magnitude
- 2.2ML
- Depth
- 1.5km ± 8.8
- Belgian time
- 14:19:142015-04-02
- UTC
- 12:19:142015-04-02
Main parameters
| Date and time | 2015-04-02 12:19:14 UTC 2015-04-02 14:19:14 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.459° N, 4.940° E Uncertainty ± 4.5 km |
| Depth of hypocenter | 1.5 ± 8.8 km |
| Event ID | ROB 5311 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-04-09 15:58:33 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
- 7
- Epicentral distance
- 13.3 – 78.0km
- Mean velocity, P wave
- 4.9km/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. Hypocenter at a depth of 1.5 km. P wave: 7 measurements, root-mean-square deviation 2.82 s. S wave: 5 measurements, root-mean-square deviation 0.37 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | ||||||
| GESGesves | 13.3 | 128 | 12:19:16.78+1.83 s | 12:19:18.79+3.84 s | 2.01 | 599.9 |
| MRDMaredsous | 21.3 | 215 | 12:19:19.14+4.19 s | 12:19:21.13+6.18 s | 1.99 | – |
| CLAClavier | 26.1 | 100 | 12:19:18.68+3.73 s | 12:19:22.12+7.17 s | 3.44 | 196.6 |
| RCHRochefort | 39.6 | 149 | 12:19:21.92+6.97 s | 12:19:27.28+12.33 s | 5.36 | 39.4 |
| DOUDourbes | 47.4 | 211 | 12:19:31.41+16.46 s | – | – | – |
| MEMSMembach | 77.7 | 77 | 12:19:29.28+14.33 s | 12:19:38.45+23.50 s | 9.17 | – |
| Dutch seismic network (KNMI)1 station | ||||||
| HGNHeimansgroeve | 78.0 | 64 | 12:19:29.21+14.26 s | – | – | – |