THON (BE)
Known mine explosion14 July 2008
- Magnitude
- 1.3ML
- Depth
- 3.5km ± 5.3
- Belgian time
- 13:52:272008-07-14
- UTC
- 11:52:272008-07-14
Main parameters
| Date and time | 2008-07-14 11:52:27 UTC 2008-07-14 13:52:27 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.448° N, 5.028° E Uncertainty ± 6.1 km |
| Depth of hypocenter | 3.5 ± 5.3 km |
| Event ID | ROB 3157 |
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
- 5
- Epicentral distance
- 8.2 – 71.9km
- Mean velocity, P wave
- 6.2km/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 3.5 km. P wave: 5 measurements, root-mean-square deviation 0.30 s. S wave: 4 measurements, root-mean-square deviation 0.58 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 | 8.2 | 149 | 11:52:28.47+1.28 s | 11:52:30.57+3.38 s | 2.10 | – |
| CLAClavier | 19.8 | 99 | 11:52:30.37+3.18 s | 11:52:34.02+6.83 s | 3.65 | 25.1 |
| RCHRochefort | 35.6 | 156 | 11:52:33.23+6.04 s | 11:52:39.11+11.92 s | 5.88 | – |
| DOUDourbes | 50.0 | 218 | 11:52:35.41+8.22 s | 11:52:42.01+14.82 s | 6.60 | 15.4 |
| MEMSMembach | 71.9 | 75 | 11:52:39.38+12.19 s | – | – | – |