QUENAST (BE)
Known mine explosion9 February 2015
- Magnitude
- 1.8ML
- Depth
- 0.9km ± 2.7
- Belgian time
- 11:15:582015-02-09
- UTC
- 10:15:582015-02-09
Main parameters
| Date and time | 2015-02-09 10:15:58 UTC 2015-02-09 11:15:58 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.666° N, 4.159° E Uncertainty ± 2.7 km |
| Depth of hypocenter | 0.9 ± 2.7 km |
| Event ID | ROB 5292 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-02-09 13:49:46 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
- 5.9 – 22.9km
- Mean velocity, P wave
- 5.1km/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 0.9 km. P wave: 5 measurements, root-mean-square deviation 0.14 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 | 5.9 | 252 | 10:15:59.47+1.11 s | 10:16:00.24+1.88 s | 0.77 | 141.1 |
| RQRRonquières | 8.1 | 145 | 10:15:59.78+1.42 s | 10:16:00.82+2.46 s | 1.04 | – |
| SNFSeneffe | 19.4 | 153 | 10:16:01.87+3.51 s | – | – | – |
| BRQBracquegnies | 20.6 | 185 | 10:16:02.52+4.16 s | – | – | – |
| LESLessines | 22.9 | 283 | 10:16:02.64+4.28 s | – | – | – |
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