ANDENNE (BE)
Known mine explosion16 September 2015
- Magnitude
- 1.6ML
- Depth
- 4.4km ± 3.4
- Belgian time
- 14:17:202015-09-16
- UTC
- 12:17:202015-09-16
Main parameters
| Date and time | 2015-09-16 12:17:20 UTC 2015-09-16 14:17:20 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.508° N, 4.971° E Uncertainty ± 4.2 km |
| Depth of hypocenter | 4.4 ± 3.4 km |
| Event ID | ROB 5405 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-09-16 14:23:53 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
- 15.9 – 74.4km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.3km/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 4.4 km. P wave: 10 measurements, root-mean-square deviation 0.28 s. S wave: 4 measurements, root-mean-square deviation 0.31 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)10 stations | |||||
| GESGesves | 15.9 | 149 | 12:17:23.37+2.76 s | – | – |
| CLAClavier | 25.5 | 113 | 12:17:25.48+4.87 s | 12:17:29.20+8.59 s | 3.72 |
| MRDMaredsous | 27.1 | 212 | – | 12:17:29.13+8.52 s | – |
| RCHRochefort | 43.2 | 155 | 12:17:28.63+8.02 s | 12:17:34.69+14.08 s | 6.06 |
| SNFSeneffe | 48.8 | 271 | 12:17:29.59+8.98 s | – | – |
| DOUDourbes | 53.2 | 210 | 12:17:30.57+9.96 s | 12:17:37.05+16.44 s | 6.48 |
| RQRRonquières | 54.0 | 282 | 12:17:30.62+10.01 s | – | – |
| SKQSteenkerque | 65.1 | 284 | 12:17:31.97+11.36 s | – | – |
| MEMHMembach | 74.4 | 81 | 12:17:33.48+12.87 s | – | – |
| MEMSMembach | 74.4 | 81 | 12:17:33.56+12.95 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 73.7 | 67 | 12:17:33.80+13.19 s | – | – |