LESSINES (BE)
Known mine explosion30 September 2008
- Magnitude
- –
- Depth
- 0.8km ± 8.0
- Belgian time
- 14:46:302008-09-30
- UTC
- 12:46:302008-09-30
Main parameters
| Date and time | 2008-09-30 12:46:30 UTC 2008-09-30 14:46:30 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.706° N, 3.861° E Uncertainty ± 5.3 km |
| Depth of hypocenter | 0.8 ± 8.0 km |
| Event ID | ROB 3769 |
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
- 1.4 – 41.9km
- Mean velocity, P wave
- 5.8km/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 0.8 km. P wave: 4 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)4 stations | |||||
| LESLessines | 1.4 | 291 | 12:46:31.14+0.41 s | 12:46:31.31+0.58 s | 0.17 |
| SKQSteenkerque | 16.7 | 112 | 12:46:33.90+3.17 s | 12:46:35.68+4.95 s | 1.78 |
| RQRRonquières | 28.0 | 113 | 12:46:35.80+5.07 s | – | – |
| OT5OT5-Genappe | 41.9 | 102 | 12:46:38.13+7.40 s | – | – |
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