LESSINES (BE)
Known mine explosion18 September 2008
- Magnitude
- –
- Depth
- 0.9km ± 7.8
- Belgian time
- 14:44:472008-09-18
- UTC
- 12:44:472008-09-18
Main parameters
| Date and time | 2008-09-18 12:44:47 UTC 2008-09-18 14:44:47 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 50.710° N, 3.861° E Uncertainty ± 5.3 km |
| Depth of hypocenter | 0.9 ± 7.8 km |
| Event ID | ROB 3688 |
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 – 51.9km
- Mean velocity, P wave
- 5.7km/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 0.03 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 | 1.3 | 274 | 12:44:48.26+0.33 s | 12:44:48.47+0.54 s | 0.21 |
| SKQSteenkerque | 16.9 | 114 | 12:44:50.96+3.03 s | 12:44:52.93+5.00 s | 1.97 |
| RQRRonquières | 28.2 | 114 | 12:44:52.96+5.03 s | – | – |
| SNFSeneffe | 37.3 | 126 | 12:44:54.59+6.66 s | – | – |
| OT1OT1-Mellery | 51.9 | 104 | 12:44:57.08+9.15 s | – | – |
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