QUENAST (BE)
Known mine explosion31 October 2008
- Magnitude
- 1.1ML
- Depth
- 1.5km ± 1.6
- Belgian time
- 15:15:432008-10-31
- UTC
- 14:15:432008-10-31
Main parameters
| Date and time | 2008-10-31 14:15:43 UTC 2008-10-31 15:15:43 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.661° N, 4.165° E Uncertainty ± 0.8 km |
| Depth of hypocenter | 1.5 ± 1.6 km |
| Event ID | ROB 3799 |
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
- 6.2 – 70.0km
- 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 1.5 km. P wave: 9 measurements, root-mean-square deviation 0.16 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 | 6.2 | 257 | 14:15:45.18+1.23 s | 14:15:45.96+2.01 s | 0.78 | 37.6 |
| RQRRonquières | 7.5 | 146 | 14:15:45.42+1.47 s | 14:15:46.27+2.32 s | 0.85 | 21.7 |
| SNFSeneffe | 18.7 | 153 | 14:15:47.60+3.65 s | – | – | – |
| OT5OT5-Genappe | 19.8 | 101 | 14:15:47.46+3.51 s | – | – | – |
| OT2OT2-Rixensart | 25.9 | 79 | 14:15:48.64+4.69 s | – | – | – |
| OT4OT4-Limal | 28.4 | 82 | 14:15:49.02+5.07 s | – | – | – |
| OT1OT1-Mellery | 29.7 | 104 | 14:15:49.07+5.12 s | 14:15:52.28+8.33 s | 3.21 | – |
| OT3OT3-Dion-le-Mont | 34.0 | 84 | 14:15:49.90+5.95 s | – | – | – |
| DOUDourbes | 70.0 | 154 | 14:15:56.76+12.81 s | – | – | – |
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