QUENAST (BE)
Known mine explosion11 September 2008
- Magnitude
- 0.8ML
- Depth
- 4.3km ± 1.4
- Belgian time
- 15:00:072008-09-11
- UTC
- 13:00:072008-09-11
Main parameters
| Date and time | 2008-09-11 13:00:07 UTC 2008-09-11 15:00:07 Belgian time |
|---|---|
| Magnitude | ML 0.8 |
| Epicentral coordinates | 50.657° N, 4.162° E Uncertainty ± 1.0 km |
| Depth of hypocenter | 4.3 ± 1.4 km |
| Event ID | ROB 3693 |
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
- 5.8 – 28.2km
- 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 4.3 km. P wave: 5 measurements, root-mean-square deviation 0.02 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 | 5.8 | 261 | 13:00:09.26+1.35 s | 13:00:10.08+2.17 s | 0.82 | – |
| RQRRonquières | 7.2 | 142 | 13:00:09.46+1.55 s | 13:00:10.51+2.60 s | 1.05 | 14.0 |
| SNFSeneffe | 18.4 | 152 | 13:00:11.21+3.30 s | – | – | – |
| OT5OT5-Genappe | 20.0 | 99 | 13:00:11.52+3.61 s | 13:00:13.90+5.99 s | 2.38 | – |
| OTTOttignies | 28.2 | 89 | 13:00:12.91+5.00 s | – | – | – |
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