FALLAIS (BE)
Known mine explosion13 October 2008
- Magnitude
- –
- Depth
- 1.0km ± 2.9
- Belgian time
- 15:09:222008-10-13
- UTC
- 13:09:222008-10-13
Main parameters
| Date and time | 2008-10-13 13:09:22 UTC 2008-10-13 15:09:22 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.602° N, 5.161° E Uncertainty ± 1.5 km |
| Depth of hypocenter | 1.0 ± 2.9 km |
| Event ID | ROB 3788 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-27 16:33:58 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
- 22.7 – 76.7km
- Mean velocity, P wave
- 5.8km/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. Hypocenter at a depth of 1.0 km. P wave: 6 measurements, root-mean-square deviation 3.34 s. S wave: 4 measurements, root-mean-square deviation 0.57 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)7 stations | |||||
| CLAClavier | 22.7 | 154 | – | 13:09:30.17+7.30 s | – |
| GESGesves | 24.7 | 192 | 13:09:27.18+4.31 s | 13:09:30.22+7.35 s | 3.04 |
| STISart Tilman | 28.6 | 94 | 13:09:30.28+7.41 s | – | – |
| SNFSeneffe | 62.9 | 261 | 13:09:41.50+18.63 s | – | – |
| RQRRonquières | 66.2 | 271 | 13:09:31.32+8.45 s | 13:09:42.29+19.42 s | 10.97 |
| DOUDourbes | 69.3 | 216 | 13:09:34.73+11.86 s | 13:09:44.26+21.39 s | 9.53 |
| SKQSteenkerque | 76.7 | 274 | 13:09:36.02+13.15 s | – | – |