LESSINES (BE)
Known mine explosion30 October 2008
- Magnitude
- 1.1ML
- Depth
- 1.9km ± 1.4
- Belgian time
- 14:47:372008-10-30
- UTC
- 13:47:372008-10-30
Main parameters
| Date and time | 2008-10-30 13:47:37 UTC 2008-10-30 14:47:37 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.721° N, 3.833° E Uncertainty ± 3.1 km |
| Depth of hypocenter | 1.9 ± 1.4 km |
| Event ID | ROB 3802 |
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
- 5
- Epicentral distance
- 1.3 – 44.2km
- 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 1.9 km. P wave: 5 measurements, root-mean-square deviation 0.06 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)5 stations | ||||||
| LESLessines | 1.3 | 146 | 13:47:38.32+0.64 s | 13:47:38.43+0.75 s | 0.11 | – |
| SKQSteenkerque | 19.2 | 114 | 13:47:41.09+3.41 s | 13:47:43.54+5.86 s | 2.45 | 25.1 |
| RQRRonquières | 30.5 | 115 | 13:47:42.89+5.21 s | 13:47:46.78+9.10 s | 3.89 | 7.4 |
| SNFSeneffe | 39.6 | 126 | 13:47:44.57+6.89 s | – | – | – |
| OT5OT5-Genappe | 44.2 | 103 | 13:47:45.30+7.62 s | – | – | – |
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