SOUMAGNE (BE)
Known mine explosion30 August 2013
- Magnitude
- 1.3ML
- Depth
- 10.0km ± 3.7
- Belgian time
- 13:17:012013-08-30
- UTC
- 11:17:012013-08-30
Main parameters
| Date and time | 2013-08-30 11:17:01 UTC 2013-08-30 13:17:01 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.641° N, 5.675° E Uncertainty ± 2.4 km |
| Depth of hypocenter | 10.0 ± 3.7 km |
| Event ID | ROB 4944 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-08-30 16:20:57 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
- 10
- Epicentral distance
- 5.3 – 1049.9km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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 10.0 km. P wave: 8 measurements, root-mean-square deviation 0.47 s. S wave: 4 measurements, root-mean-square deviation 0.54 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)8 stations | ||||||
| LCHLa Chartreuse | 5.3 | 267 | 11:17:03.17+1.89 s | – | – | – |
| STISart Tilman | 10.2 | 230 | 11:17:03.28+2.00 s | – | – | – |
| MEMSMembach | 24.0 | 98 | 11:17:05.37+4.09 s | 11:17:08.69+7.41 s | 3.32 | – |
| CLAClavier | 36.2 | 227 | 11:17:07.83+6.55 s | 11:17:12.98+11.70 s | 5.15 | 24.5 |
| HOUHouvegnez | 39.6 | 144 | 11:17:08.50+7.22 s | 11:17:12.49+11.21 s | 3.99 | – |
| DOUDourbes | 97.9 | 232 | 11:17:18.75+17.47 s | 11:17:29.11+27.83 s | 10.36 | 3.2 |
| SKQSteenkerque | 112.8 | 271 | 11:17:19.79+18.51 s | – | – | – |
| BOUBougnies | 125.8 | 258 | 11:17:20.59+19.31 s | – | – | – |
| British Geological Survey (United Kingdom)1 station | ||||||
| KPLPLOCKTON | 1049.9 | 320 | 11:19:14.08+132.80 s | – | – | – |
| Dutch seismic network (KNMI)1 station | ||||||
| HGNHeimansgroeve | 22.7 | 53 | 11:17:06.04+4.76 s | – | – | – |