WAIMES (BE)
Known mine explosion28 February 2011
- Magnitude
- 1.6ML
- Depth
- 4.0km ± 5.8
- Belgian time
- 12:29:332011-02-28
- UTC
- 11:29:332011-02-28
Main parameters
| Date and time | 2011-02-28 11:29:33 UTC 2011-02-28 12:29:33 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.430° N, 6.107° E Uncertainty ± 1.3 km |
| Depth of hypocenter | 4.0 ± 5.8 km |
| Event ID | ROB 4203 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2012-04-27 16:33:58 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
- 21.1 – 114.1km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.3km/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 4.0 km. P wave: 7 measurements, root-mean-square deviation 0.22 s. S wave: 6 measurements, root-mean-square deviation 0.54 s.
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 | ||||||
| MEMSMembach | 21.1 | 341 | 11:29:37.12+3.73 s | 11:29:39.85+6.46 s | 2.73 | 172.4 |
| KLBKalborn | 36.7 | 180 | 11:29:39.67+6.28 s | 11:29:44.17+10.78 s | 4.50 | – |
| CLAClavier | 57.3 | 269 | 11:29:42.86+9.47 s | 11:29:50.20+16.81 s | 7.34 | – |
| RCHRochefort | 69.8 | 244 | 11:29:45.30+11.91 s | – | – | – |
| GESGesves | 72.7 | 266 | 11:29:45.85+12.46 s | 11:29:54.50+21.11 s | 8.65 | – |
| WLFWalferdange | 85.2 | 178 | 11:29:48.33+14.94 s | 11:29:58.01+24.62 s | 9.68 | – |
| DOUDourbes | 114.1 | 252 | 11:29:52.70+19.31 s | 11:30:08.33+34.94 s | 15.63 | 4.3 |