WAIMES (BE)
Known mine explosion1 September 2015
- Magnitude
- 1.9ML
- Depth
- 1.7km ± 3.3
- Belgian time
- 12:48:182015-09-01
- UTC
- 10:48:182015-09-01
Main parameters
| Date and time | 2015-09-01 10:48:18 UTC 2015-09-01 12:48:18 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.423° N, 6.095° E Uncertainty ± 4.1 km |
| Depth of hypocenter | 1.7 ± 3.3 km |
| Event ID | ROB 5401 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-09-01 13:08:55 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
- 9
- Epicentral distance
- 10.0 – 113.0km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.4km/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 1.7 km. P wave: 8 measurements, root-mean-square deviation 0.19 s. S wave: 4 measurements, root-mean-square deviation 0.05 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)8 stations | |||||
| HOUHouvegnez | 10.0 | 220 | 10:48:20.26+1.84 s | – | – |
| MEMSMembach | 21.5 | 344 | 10:48:22.39+3.97 s | 10:48:24.81+6.39 s | 2.42 |
| MEMHMembach | 21.5 | 344 | 10:48:22.40+3.98 s | 10:48:24.81+6.39 s | 2.41 |
| EBNEben-Emael | 51.0 | 325 | – | 10:48:33.51+15.09 s | – |
| CLAClavier | 56.3 | 270 | 10:48:27.90+9.48 s | 10:48:34.94+16.52 s | 7.04 |
| GESGesves | 71.8 | 267 | 10:48:30.82+12.40 s | – | – |
| WLFWalferdange | 84.5 | 177 | 10:48:33.37+14.95 s | – | – |
| DOUDourbes | 113.0 | 252 | 10:48:38.30+19.88 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 39.6 | 343 | 10:48:25.58+7.16 s | – | – |