NAMÊCHE (BE)
Known mine explosion6 August 2008
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:52:032008-08-06
- UTC
- 11:52:032008-08-06
Main parameters
| Date and time | 2008-08-06 11:52:03 UTC 2008-08-06 13:52:03 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.608° N, 4.828° E Uncertainty ± 5.3 km |
| Event ID | ROB 3102 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2010-02-26 10:35:10 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
- 6
- Epicentral distance
- 30.8 – 107.2km
- Mean velocity, P wave
- 5.0km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 6 measurements, root-mean-square deviation 0.80 s. S wave: 5 measurements, root-mean-square deviation 0.93 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)6 stations | ||||||
| GESGesves | 30.8 | 143 | 11:52:09.94+6.44 s | 11:52:12.09+8.59 s | 2.15 | 12.2 |
| CLAClavier | 39.6 | 122 | 11:52:12.06+8.56 s | 11:52:15.71+12.21 s | 3.65 | 44.3 |
| RCHRochefort | 57.8 | 150 | 11:52:15.17+11.67 s | 11:52:20.59+17.09 s | 5.42 | – |
| DOUDourbes | 59.4 | 196 | 11:52:17.09+13.59 s | 11:52:22.72+19.22 s | 5.63 | 9.8 |
| MEMSMembach | 83.6 | 89 | 11:52:20.09+16.59 s | 11:52:31.08+27.58 s | 10.99 | 9.0 |
| KLBKalborn | 107.2 | 121 | 11:52:24.22+20.72 s | – | – | – |