KELBERG (DE)
Known mine explosion11 July 2009
- Magnitude
- 1.9ML
- Depth
- 3.7km ± 4.3
- Belgian time
- 13:57:372009-07-11
- UTC
- 11:57:372009-07-11
Main parameters
| Date and time | 2009-07-11 11:57:37 UTC 2009-07-11 13:57:37 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.242° N, 6.849° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 3.7 ± 4.3 km |
| Event ID | ROB 3496 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2009-07-30 13:03:54 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
- 15
- Epicentral distance
- 13.4 – 161.9km
- Mean velocity, P wave
- 5.7km/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 3.7 km. P wave: 13 measurements, root-mean-square deviation 0.40 s. S wave: 7 measurements, root-mean-square deviation 0.68 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 | ||||||
| KLBKalborn | 55.2 | 254 | 11:57:46.27+8.99 s | 11:57:53.10+15.82 s | 6.83 | 22.4 |
| VIAVianden | 57.5 | 234 | 11:57:46.66+9.38 s | – | – | – |
| ROBRobertville | 57.7 | 294 | 11:57:45.94+8.66 s | 11:57:53.02+15.74 s | 7.08 | – |
| MEMSMembach | 72.3 | 305 | 11:57:49.19+11.91 s | 11:57:59.16+21.88 s | 9.97 | 40.0 |
| WLFWalferdange | 81.5 | 218 | 11:57:50.97+13.69 s | 11:58:01.73+24.45 s | 10.76 | 30.8 |
| STISart Tilman | 98.9 | 293 | 11:57:54.11+16.83 s | – | – | – |
| LCHLa Chartreuse | 99.2 | 297 | 11:57:54.33+17.05 s | 11:58:07.71+30.43 s | 13.38 | – |
| EBNEben-Emael | 103.5 | 307 | 11:57:54.94+17.66 s | – | – | – |
| HRKHerkenbosch | 115.7 | 336 | 11:57:57.65+20.37 s | – | – | – |
| GESGesves | 126.5 | 278 | 11:57:58.20+20.92 s | 11:58:14.77+37.49 s | 16.57 | – |
| DOUDourbes | 161.9 | 265 | 11:58:03.81+26.53 s | 11:58:23.31+46.03 s | 19.50 | 18.1 |
| Bensberg seismic network (University of Cologne, Germany)4 stations | ||||||
| HILHillesheim | 13.4 | 295 | 11:57:39.25+1.97 s | 11:57:41.64+4.36 s | 2.39 | – |
| BGGBurg Eltz | 35.0 | 96 | 11:57:43.65+6.37 s | – | – | – |
| STBSteinbachtalsperre | 39.2 | 359 | 11:57:43.96+6.68 s | – | – | – |
| DREDreilägerbach | 64.1 | 317 | 11:57:47.89+10.61 s | 11:57:56.74+19.46 s | 8.85 | – |