QUENAST (BE)
Known mine explosion5 September 2013
- Magnitude
- 1.9ML
- Depth
- 1.2km ± 3.6
- Belgian time
- 15:09:512013-09-05
- UTC
- 13:09:512013-09-05
Main parameters
| Date and time | 2013-09-05 13:09:51 UTC 2013-09-05 15:09:51 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.674° N, 4.151° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 1.2 ± 3.6 km |
| Event ID | ROB 4946 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-09-05 17:19:03 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
- 9
- Epicentral distance
- 5.7 – 131.7km
- Mean velocity, P wave
- 5.7km/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: 8 measurements, root-mean-square deviation 0.29 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)9 stations | ||||||
| SKQSteenkerque | 5.7 | 241 | 13:09:52.90+0.97 s | 13:09:53.68+1.75 s | 0.78 | 205.6 |
| RQRRonquières | 9.2 | 145 | 13:09:53.14+1.21 s | – | – | – |
| UCCBUccle | 20.2 | 47 | 13:09:55.50+3.57 s | – | – | – |
| SNFSeneffe | 20.4 | 152 | 13:09:55.45+3.52 s | – | – | – |
| LESLessines | 22.1 | 281 | 13:09:55.94+4.01 s | – | – | – |
| BOUBougnies | 34.9 | 205 | 13:09:58.54+6.61 s | – | – | – |
| DOUDourbes | 71.7 | 154 | 13:10:04.68+12.75 s | – | – | – |
| CLAClavier | 86.4 | 109 | 13:10:06.60+14.67 s | – | – | – |
| MEMSMembach | 131.7 | 92 | 13:10:14.64+22.71 s | – | – | – |