Lessines (BE)
Known mine explosion4 November 2008
- Magnitude
- –
- Depth
- 0.9km ± 15.5
- Belgian time
- 10:59:192008-11-04
- UTC
- 09:59:192008-11-04
Main parameters
| Date and time | 2008-11-04 09:59:19 UTC 2008-11-04 10:59:19 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.712° N, 3.866° E Uncertainty ± 12.9 km |
| Depth of hypocenter | 0.9 ± 15.5 km |
| Event ID | ROB 3917 |
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
- 1.7 – 37.0km
- Mean velocity, P wave
- 4.1km/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: 5 measurements, root-mean-square deviation 1.68 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)5 stations | |||||
| LESLessines | 1.7 | 267 | 09:59:19.95+0.45 s | – | – |
| SKQSteenkerque | 16.6 | 115 | 09:59:22.55+3.05 s | – | – |
| RQRRonquières | 27.9 | 115 | 09:59:24.60+5.10 s | 09:59:27.76+8.26 s | 3.16 |
| BOUBougnies | 36.3 | 171 | 09:59:30.75+11.25 s | – | – |
| SNFSeneffe | 37.0 | 127 | 09:59:26.08+6.58 s | – | – |
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