QUENAST (BE)
Known mine explosion30 September 2008
- Magnitude
- 2.0ML
- Depth
- 2.2km ± 2.8
- Belgian time
- 15:02:422008-09-30
- UTC
- 13:02:422008-09-30
Main parameters
| Date and time | 2008-09-30 13:02:42 UTC 2008-09-30 15:02:42 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.663° N, 4.160° E Uncertainty ± 1.4 km |
| Depth of hypocenter | 2.2 ± 2.8 km |
| Event ID | ROB 3771 |
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
- 5.9 – 34.4km
- 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 2.2 km. P wave: 9 measurements, root-mean-square deviation 0.11 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 | ||||||
| SKQSteenkerque | 5.9 | 255 | 13:02:43.72+1.08 s | – | – | – |
| RQRRonquières | 7.8 | 144 | 13:02:44.10+1.46 s | 13:02:45.34+2.70 s | 1.24 | 104.0 |
| SNFSeneffe | 19.0 | 152 | 13:02:46.18+3.54 s | – | – | – |
| OT5OT5-Genappe | 20.2 | 101 | 13:02:46.18+3.54 s | 13:02:48.49+5.85 s | 2.31 | 271.0 |
| OT2OT2-Rixensart | 26.2 | 80 | 13:02:47.40+4.76 s | – | – | – |
| OTTOttignies | 28.3 | 91 | 13:02:47.64+5.00 s | – | – | – |
| OT4OT4-Limal | 28.8 | 83 | 13:02:47.79+5.15 s | – | – | – |
| OT1OT1-Mellery | 30.1 | 104 | 13:02:47.76+5.12 s | – | – | – |
| OT3OT3-Dion-le-Mont | 34.4 | 84 | 13:02:48.84+6.20 s | – | – | – |
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