DURNAL (BE)
Known mine explosion16 September 2008
- Magnitude
- 1.0ML
- Depth
- 1.8km ± 2.7
- Belgian time
- 15:04:562008-09-16
- UTC
- 13:04:562008-09-16
Main parameters
| Date and time | 2008-09-16 13:04:56 UTC 2008-09-16 15:04:56 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.339° N, 4.982° E Uncertainty ± 0.9 km |
| Depth of hypocenter | 1.8 ± 2.7 km |
| Event ID | ROB 3691 |
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
- 5
- Epicentral distance
- 9.0 – 38.7km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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 1.8 km. P wave: 5 measurements, root-mean-square deviation 0.20 s. S wave: 5 measurements, root-mean-square deviation 0.14 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)5 stations | ||||||
| GESGesves | 9.0 | 56 | 13:04:58.06+1.25 s | 13:04:59.59+2.78 s | 1.53 | 33.6 |
| MRDMaredsous | 15.8 | 255 | 13:04:59.71+2.90 s | 13:05:01.72+4.91 s | 2.01 | 10.9 |
| CLAClavier | 24.4 | 69 | 13:05:01.37+4.56 s | 13:05:04.27+7.46 s | 2.90 | 14.4 |
| RCHRochefort | 26.9 | 139 | 13:05:01.55+4.74 s | 13:05:04.82+8.01 s | 3.27 | – |
| DOUDourbes | 38.7 | 226 | 13:05:03.70+6.89 s | 13:05:08.16+11.35 s | 4.46 | 6.0 |