LESSINES (BE)
Known mine explosion31 October 2008
- Magnitude
- –
- Depth
- 1.0km ± 3.5
- Belgian time
- 12:01:472008-10-31
- UTC
- 11:01:472008-10-31
Main parameters
| Date and time | 2008-10-31 11:01:47 UTC 2008-10-31 12:01:47 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.714° N, 3.842° E Uncertainty ± 6.9 km |
| Depth of hypocenter | 1.0 ± 3.5 km |
| Event ID | ROB 3835 |
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
- 7
- Epicentral distance
- 0.3 – 53.3km
- Mean velocity, P wave
- 8.3km/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 1.0 km. P wave: 7 measurements, root-mean-square deviation 1.17 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)7 stations | |||||
| LESLessines | 0.3 | 163 | 11:01:47.40+0.13 s | – | – |
| SKQSteenkerque | 18.3 | 113 | 11:01:50.92+3.65 s | 11:01:53.12+5.85 s | 2.20 |
| RQRRonquières | 29.6 | 114 | 11:01:52.34+5.07 s | – | – |
| BOUBougnies | 36.8 | 169 | 11:01:53.88+6.61 s | – | – |
| SNFSeneffe | 38.6 | 126 | 11:01:53.33+6.06 s | – | – |
| OTTOttignies | 51.1 | 97 | 11:01:51.94+4.67 s | – | – |
| OT1OT1-Mellery | 53.3 | 104 | 11:01:55.39+8.12 s | – | – |
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