LESSINES (BE)
Known mine explosion30 October 2008
- Magnitude
- 0.9ML
- Depth
- 2.0km ± 2.3
- Belgian time
- 12:01:232008-10-30
- UTC
- 11:01:232008-10-30
Main parameters
| Date and time | 2008-10-30 11:01:23 UTC 2008-10-30 12:01:23 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.712° N, 3.839° E Uncertainty ± 5.0 km |
| Depth of hypocenter | 2.0 ± 2.3 km |
| Event ID | ROB 3801 |
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
- 9
- Epicentral distance
- 0.3 – 108.7km
- Mean velocity, P wave
- 5.5km/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 2.0 km. P wave: 9 measurements, root-mean-square deviation 0.53 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)9 stations | ||||||
| LESLessines | 0.3 | 118 | 11:01:24.24+0.48 s | – | – | – |
| SKQSteenkerque | 18.4 | 112 | 11:01:26.87+3.11 s | 11:01:29.52+5.76 s | 2.65 | – |
| RQRRonquières | 29.7 | 113 | 11:01:28.66+4.90 s | 11:01:32.63+8.87 s | 3.97 | 7.5 |
| SNFSeneffe | 38.6 | 125 | 11:01:30.40+6.64 s | – | – | – |
| OTTOttignies | 51.3 | 96 | 11:01:32.94+9.18 s | – | – | – |
| OT1OT1-Mellery | 53.5 | 104 | 11:01:32.54+8.78 s | – | – | – |
| DOUDourbes | 87.2 | 142 | 11:01:39.76+16.00 s | – | – | – |
| GESGesves | 95.6 | 112 | 11:01:41.86+18.10 s | – | – | – |
| CLAClavier | 108.7 | 107 | 11:01:42.43+18.67 s | – | – | – |
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