LESSINES (BE)
Known mine explosion9 October 2008
- Magnitude
- –
- Depth
- 2.5km ± 1.5
- Belgian time
- 14:48:342008-10-09
- UTC
- 12:48:342008-10-09
Main parameters
| Date and time | 2008-10-09 12:48:34 UTC 2008-10-09 14:48:34 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.715° N, 3.828° E Uncertainty ± 3.2 km |
| Depth of hypocenter | 2.5 ± 1.5 km |
| Event ID | ROB 3798 |
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
- 4
- Epicentral distance
- 1.2 – 39.5km
- Mean velocity, P wave
- 6.0km/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 2.5 km. P wave: 4 measurements, root-mean-square deviation 0.03 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 | |||||
| LESLessines | 1.2 | 111 | 12:48:35.49+0.62 s | – | – |
| SKQSteenkerque | 19.3 | 112 | 12:48:38.35+3.48 s | 12:48:40.77+5.90 s | 2.42 |
| RQRRonquières | 30.6 | 113 | 12:48:40.15+5.28 s | 12:48:44.34+9.47 s | 4.19 |
| SNFSeneffe | 39.5 | 125 | 12:48:41.64+6.77 s | – | – |
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