ENGHIEN (BE)
Known mine explosion15 October 2013
- Magnitude
- 1.3ML
- Depth
- 5.8km ± 5.3
- Belgian time
- 15:20:002013-10-15
- UTC
- 13:20:002013-10-15
Main parameters
| Date and time | 2013-10-15 13:20:00 UTC 2013-10-15 15:20:00 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.701° N, 4.081° E Uncertainty ± 7.2 km |
| Depth of hypocenter | 5.8 ± 5.3 km |
| Event ID | ROB 4986 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-10-15 18:07:35 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
- 7
- Epicentral distance
- 5.8 – 136.8km
- 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 5.8 km. P wave: 6 measurements, root-mean-square deviation 0.44 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)7 stations | ||||||
| SKQSteenkerque | 5.8 | 181 | 13:20:02.32+1.65 s | 13:20:03.16+2.49 s | 0.84 | 130.3 |
| RQRRonquières | 14.7 | 136 | 13:20:02.51+1.84 s | – | – | – |
| UCCBUccle | 22.4 | 61 | 13:20:04.94+4.27 s | – | – | – |
| BRQBracquegnies | 24.8 | 171 | 13:20:05.10+4.43 s | – | – | – |
| SNFSeneffe | 25.6 | 146 | 13:20:04.55+3.88 s | – | – | – |
| DOUDourbes | 76.7 | 151 | 13:20:13.75+13.08 s | 13:20:23.91+23.24 s | 10.16 | 2.4 |
| MEMSMembach | 136.8 | 94 | 13:20:23.99+23.32 s | – | – | – |