RUMILLIES (BE)
Known mine explosion6 October 2015
- Magnitude
- 1.8ML
- Depth
- 8.9km ± 5.4
- Belgian time
- 13:02:552015-10-06
- UTC
- 11:02:552015-10-06
Main parameters
| Date and time | 2015-10-06 11:02:55 UTC 2015-10-06 13:02:55 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.622° N, 3.434° E Uncertainty ± 4.6 km |
| Depth of hypocenter | 8.9 ± 5.4 km |
| Event ID | ROB 5413 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-10-08 14:18:37 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
- 10
- Epicentral distance
- 30.6 – 137.7km
- Mean velocity, P wave
- 6.2km/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 8.9 km. P wave: 8 measurements, root-mean-square deviation 0.33 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)10 stations | ||||||
| LESLessines | 30.6 | 71 | 11:03:00.93+5.57 s | 11:03:04.69+9.33 s | 3.76 | 57.9 |
| BOUBougnies | 44.6 | 125 | 11:03:03.43+8.07 s | – | – | – |
| SKQSteenkerque | 45.8 | 86 | 11:03:03.21+7.85 s | – | – | – |
| BRQBracquegnies | 52.2 | 107 | 11:03:04.31+8.95 s | – | – | – |
| RQRRonquières | 56.0 | 92 | 11:03:04.58+9.22 s | – | – | – |
| SNFSeneffe | 61.5 | 101 | 11:03:05.54+10.18 s | – | – | – |
| MRDMaredsous | 101.2 | 110 | 11:03:11.72+16.36 s | – | – | – |
| DOUDourbes | 101.3 | 125 | 11:03:12.79+17.43 s | – | – | – |
| GESGesves | 120.2 | 102 | 11:03:15.38+20.02 s | 11:03:30.30+34.94 s | 14.92 | – |
| RCHRochefort | 137.7 | 111 | 11:03:19.54+24.18 s | – | – | – |