QUENAST (BE)
Known mine explosion1 October 2013
- Magnitude
- 1.6ML
- Depth
- 1.0km ± 3.2
- Belgian time
- 15:17:332013-10-01
- UTC
- 13:17:332013-10-01
Main parameters
| Date and time | 2013-10-01 13:17:33 UTC 2013-10-01 15:17:33 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.686° N, 4.150° E Uncertainty ± 1.5 km |
| Depth of hypocenter | 1.0 ± 3.2 km |
| Event ID | ROB 4978 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-10-02 10:05:53 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
- 11
- Epicentral distance
- 6.4 – 153.8km
- 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 1.0 km. P wave: 9 measurements, root-mean-square deviation 0.24 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)11 stations | ||||||
| SKQSteenkerque | 6.4 | 230 | 13:17:34.81+1.20 s | 13:17:35.44+1.83 s | 0.63 | 320.5 |
| RQRRonquières | 10.4 | 149 | 13:17:35.11+1.50 s | – | – | – |
| UCCBUccle | 19.3 | 50 | 13:17:37.16+3.55 s | – | – | – |
| SNFSeneffe | 21.7 | 154 | 13:17:37.19+3.58 s | – | – | – |
| LESLessines | 21.8 | 277 | 13:17:37.79+4.18 s | – | – | – |
| BOUBougnies | 36.1 | 204 | 13:17:40.25+6.64 s | – | – | – |
| MRDMaredsous | 61.2 | 134 | 13:17:43.96+10.35 s | – | – | – |
| DOUDourbes | 73.0 | 154 | 13:17:46.19+12.58 s | 13:17:56.20+22.59 s | 10.01 | 4.3 |
| CLAClavier | 86.9 | 110 | 13:17:48.72+15.11 s | – | – | – |
| MEMHMembach | 131.9 | 93 | 13:17:55.96+22.35 s | 13:18:12.06+38.45 s | 16.10 | – |
| KLBKalborn | 153.8 | 114 | 13:17:59.19+25.58 s | – | – | – |