MER DU NORD
Known mine explosion12 April 2006
- Magnitude
- 1.0ML
- Depth
- –
- Belgian time
- 15:39:282006-04-12
- UTC
- 13:39:282006-04-12
Main parameters
| Date and time | 2006-04-12 13:39:28 UTC 2006-04-12 15:39:28 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.098° N, 4.226° E Uncertainty ± 0.5 km |
| Event ID | ROB 2399 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2009-05-30 18:17:43 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
- 8
- Epicentral distance
- 26.4 – 148.9km
- Mean velocity, P wave
- 2.5km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 6 measurements, root-mean-square deviation 5.95 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)8 stations | |||||
| DOUDourbes | 26.4 | 91 | 13:39:28.77+0.77 s | – | – |
| SNFSeneffe | 46.2 | 5 | 13:39:35.25+7.25 s | – | – |
| RQRRonquières | 56.5 | 360 | 13:39:33.75+5.75 s | 13:39:49.98+21.98 s | 16.23 |
| SKQSteenkerque | 62.2 | 350 | 13:39:32.12+4.12 s | 13:39:49.24+21.24 s | 17.12 |
| GESGesves | 69.3 | 62 | 13:39:41.32+13.32 s | – | – |
| RCHRochefort | 71.9 | 85 | 13:39:54.87+26.87 s | – | – |
| MEMBMembach | 139.1 | 65 | 13:39:46.27+18.27 s | – | – |
| ZEVZevekote | 148.9 | 321 | 13:39:23.28−4.72 s | – | – |