ANTOING (BE)
Known mine explosion20 September 2013
- Magnitude
- 1.2ML
- Depth
- 1.2km ± 21.1
- Belgian time
- 13:07:262013-09-20
- UTC
- 11:07:262013-09-20
Main parameters
| Date and time | 2013-09-20 11:07:26 UTC 2013-09-20 13:07:26 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.510° N, 3.449° E Uncertainty ± 12.1 km |
| Depth of hypocenter | 1.2 ± 21.1 km |
| Event ID | ROB 4970 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-09-23 08:04:27 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
- 35.8 – 131.9km
- 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: 6 measurements, root-mean-square deviation 0.47 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 | ||||||
| LESLessines | 35.8 | 51 | 11:07:32.28+5.94 s | 11:07:36.62+10.28 s | 4.34 | – |
| BOUBougnies | 37.7 | 111 | 11:07:32.05+5.71 s | – | – | – |
| SKQSteenkerque | 47.3 | 71 | 11:07:34.79+8.45 s | 11:07:40.06+13.72 s | 5.27 | 5.8 |
| RQRRonquières | 56.0 | 79 | 11:07:36.31+9.97 s | – | – | – |
| SNFSeneffe | 59.2 | 90 | 11:07:37.17+10.83 s | – | – | – |
| DOUDourbes | 93.8 | 119 | 11:07:42.16+15.82 s | – | – | – |
| CLAClavier | 131.9 | 94 | 11:07:49.66+23.32 s | 11:08:08.12+41.78 s | 18.46 | 5.9 |