ANTOING (BE)
Known mine explosion10 April 2012
- Magnitude
- 1.2ML
- Depth
- 2.1km ± 13.9
- Belgian time
- 12:46:442012-04-10
- UTC
- 10:46:442012-04-10
Main parameters
| Date and time | 2012-04-10 10:46:44 UTC 2012-04-10 12:46:44 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.588° N, 3.460° E Uncertainty ± 4.8 km |
| Depth of hypocenter | 2.1 ± 13.9 km |
| Event ID | ROB 4713 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-11 10:27:28 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
- 30.4 – 196.2km
- Mean velocity, P wave
- 5.5km/s
- Mean velocity, S wave
- 3.2km/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 2.1 km. P wave: 9 measurements, root-mean-square deviation 0.33 s. S wave: 6 measurements, root-mean-square deviation 1.25 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 | ||||||
| LESLessines | 30.4 | 63 | 10:46:49.83+5.30 s | 10:46:53.86+9.33 s | 4.03 | – |
| BOUBougnies | 40.9 | 123 | 10:46:51.27+6.74 s | – | – | – |
| SKQSteenkerque | 44.4 | 81 | 10:46:51.98+7.45 s | 10:46:55.45+10.92 s | 3.47 | – |
| BRQBracquegnies | 49.4 | 104 | 10:46:52.84+8.31 s | – | – | – |
| SNFSeneffe | 59.0 | 98 | 10:46:54.34+9.81 s | 10:47:01.71+17.18 s | 7.37 | – |
| OSTBOostende | 81.1 | 333 | 10:46:58.37+13.84 s | – | – | – |
| DOUDourbes | 97.6 | 124 | 10:47:01.52+16.99 s | 10:47:13.61+29.08 s | 12.09 | 4.6 |
| MRDMaredsous | 98.2 | 108 | 10:47:01.27+16.74 s | 10:47:16.35+31.82 s | 15.08 | – |
| GESGesves | 117.7 | 100 | 10:47:04.33+19.80 s | 10:47:20.54+36.01 s | 16.21 | – |
| CLAClavier | 132.0 | 97 | 10:47:06.57+22.04 s | – | – | – |
| KLBKalborn | 196.2 | 105 | 10:47:12.08+27.55 s | – | – | – |