LESSINES (BE)
Known mine explosion4 November 2008
- Magnitude
- 0.7ML
- Depth
- 0.9km ± 3.9
- Belgian time
- 14:46:422008-11-04
- UTC
- 13:46:422008-11-04
Main parameters
| Date and time | 2008-11-04 13:46:42 UTC 2008-11-04 14:46:42 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.713° N, 3.841° E Uncertainty ± 8.4 km |
| Depth of hypocenter | 0.9 ± 3.9 km |
| Event ID | ROB 3916 |
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
- 0.2 – 108.5km
- Mean velocity, P wave
- 5.4km/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 0.9 km. P wave: 6 measurements, root-mean-square deviation 0.92 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)6 stations | ||||||
| LESLessines | 0.2 | 151 | 13:46:42.86+0.20 s | – | – | – |
| SKQSteenkerque | 18.3 | 113 | 13:46:45.80+3.14 s | 13:46:48.15+5.49 s | 2.35 | 4.5 |
| RQRRonquières | 29.6 | 113 | 13:46:46.84+4.18 s | – | – | – |
| SNFSeneffe | 38.5 | 125 | 13:46:49.45+6.79 s | – | – | – |
| DOUDourbes | 87.1 | 142 | 13:47:00.13+17.47 s | 13:47:08.66+26.00 s | 8.53 | 3.2 |
| CLAClavier | 108.5 | 107 | 13:47:01.30+18.64 s | 13:47:17.69+35.03 s | 16.39 | 1.9 |
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