QUENAST (BE)
Known mine explosion1 October 2008
- Magnitude
- 1.2ML
- Depth
- 1.4km ± 1.8
- Belgian time
- 14:55:452008-10-01
- UTC
- 12:55:452008-10-01
Main parameters
| Date and time | 2008-10-01 12:55:45 UTC 2008-10-01 14:55:45 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.665° N, 4.167° E Uncertainty ± 1.1 km |
| Depth of hypocenter | 1.4 ± 1.8 km |
| Event ID | ROB 3750 |
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
- 6.4 – 27.8km
- 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 1.4 km. P wave: 5 measurements, root-mean-square deviation 0.10 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)5 stations | ||||||
| SKQSteenkerque | 6.4 | 254 | 12:55:46.81+1.27 s | 12:55:47.58+2.04 s | 0.77 | 48.0 |
| RQRRonquières | 7.7 | 148 | 12:55:47.07+1.53 s | 12:55:47.89+2.35 s | 0.82 | 27.8 |
| SNFSeneffe | 19.0 | 154 | 12:55:49.21+3.67 s | – | – | – |
| OT5OT5-Genappe | 19.8 | 102 | 12:55:49.09+3.55 s | – | – | – |
| OTTOttignies | 27.8 | 91 | 12:55:50.44+4.90 s | – | – | – |
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