LESSINES (BE)
Known mine explosion18 September 2008
- Magnitude
- –
- Depth
- 1.1km ± 12.4
- Belgian time
- 11:49:342008-09-18
- UTC
- 09:49:342008-09-18
Main parameters
| Date and time | 2008-09-18 09:49:34 UTC 2008-09-18 11:49:34 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.713° N, 3.868° E Uncertainty ± 6.8 km |
| Depth of hypocenter | 1.1 ± 12.4 km |
| Event ID | ROB 3725 |
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
- 6
- Epicentral distance
- 1.8 – 41.6km
- Mean velocity, P wave
- 5.6km/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 1.1 km. P wave: 6 measurements, root-mean-square deviation 0.15 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)6 stations | |||||
| LESLessines | 1.8 | 262 | 09:49:35.33+0.46 s | 09:49:35.60+0.73 s | 0.27 |
| SKQSteenkerque | 16.6 | 115 | 09:49:37.83+2.96 s | – | – |
| RQRRonquières | 27.9 | 115 | 09:49:39.51+4.64 s | – | – |
| BOUBougnies | 36.5 | 171 | 09:49:41.38+6.51 s | – | – |
| SNFSeneffe | 37.1 | 127 | 09:49:41.41+6.54 s | – | – |
| OT5OT5-Genappe | 41.6 | 103 | 09:49:42.42+7.55 s | – | – |
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