QUENAST (BE)
Known mine explosion2 September 2008
- Magnitude
- 1.4ML
- Depth
- 1.2km ± 1.3
- Belgian time
- 14:56:112008-09-02
- UTC
- 12:56:112008-09-02
Main parameters
| Date and time | 2008-09-02 12:56:11 UTC 2008-09-02 14:56:11 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.665° N, 4.168° E Uncertainty ± 0.8 km |
| Depth of hypocenter | 1.2 ± 1.3 km |
| Event ID | ROB 3696 |
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
- 6
- Epicentral distance
- 6.5 – 33.8km
- Mean velocity, P wave
- 5.8km/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 1.2 km. P wave: 6 measurements, root-mean-square deviation 0.09 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)6 stations | ||||||
| SKQSteenkerque | 6.5 | 254 | 12:56:12.82+1.26 s | 12:56:13.60+2.04 s | 0.78 | 42.2 |
| RQRRonquières | 7.7 | 148 | 12:56:13.02+1.46 s | 12:56:14.00+2.44 s | 0.98 | 29.5 |
| SNFSeneffe | 19.0 | 154 | 12:56:15.22+3.66 s | – | – | – |
| OT5OT5-Genappe | 19.8 | 102 | 12:56:15.22+3.66 s | 12:56:17.35+5.79 s | 2.13 | 141.5 |
| OTTOttignies | 27.7 | 91 | 12:56:16.48+4.92 s | – | – | – |
| OT3OT3-Dion-le-Mont | 33.8 | 85 | 12:56:17.54+5.98 s | – | – | – |
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