QUENAST (BE)
Known mine explosion9 September 2008
- Magnitude
- 1.8ML
- Depth
- 3.0km ± 1.8
- Belgian time
- 15:02:282008-09-09
- UTC
- 13:02:282008-09-09
Main parameters
| Date and time | 2008-09-09 13:02:28 UTC 2008-09-09 15:02:28 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.668° N, 4.151° E Uncertainty ± 1.2 km |
| Depth of hypocenter | 3.0 ± 1.8 km |
| Event ID | ROB 3694 |
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
- 7
- Epicentral distance
- 5.4 – 73.5km
- 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 3.0 km. P wave: 7 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)7 stations | ||||||
| SKQSteenkerque | 5.4 | 247 | 13:02:29.59+1.24 s | 13:02:30.32+1.97 s | 0.73 | 298.0 |
| RQRRonquières | 8.7 | 142 | 13:02:29.97+1.62 s | 13:02:31.16+2.81 s | 1.19 | 71.5 |
| SNFSeneffe | 19.8 | 151 | 13:02:32.04+3.69 s | – | – | – |
| OT5OT5-Genappe | 21.0 | 102 | 13:02:32.05+3.70 s | – | – | – |
| OT1OT1-Mellery | 30.9 | 105 | 13:02:33.63+5.28 s | – | – | – |
| OT3OT3-Dion-le-Mont | 35.0 | 85 | 13:02:34.48+6.13 s | – | – | – |
| GESGesves | 73.5 | 115 | 13:02:41.14+12.79 s | – | – | – |
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