WELLIN (BE)
Known mine explosion14 August 2013
- Magnitude
- 1.3ML
- Depth
- 1.2km ± 8.4
- Belgian time
- 18:23:352013-08-14
- UTC
- 16:23:352013-08-14
Main parameters
| Date and time | 2013-08-14 16:23:35 UTC 2013-08-14 18:23:35 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.055° N, 5.140° E Uncertainty ± 2.9 km |
| Depth of hypocenter | 1.2 ± 8.4 km |
| Event ID | ROB 4928 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-08-14 20:25:17 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
- 12.7 – 117.6km
- Mean velocity, P wave
- 5.3km/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. Hypocenter at a depth of 1.2 km. P wave: 9 measurements, root-mean-square deviation 0.80 s. S wave: 4 measurements, root-mean-square deviation 0.50 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)9 stations | ||||||
| RCHRochefort | 12.7 | 29 | 16:23:35.13−0.44 s | – | – | – |
| MRDMaredsous | 38.2 | 316 | 16:23:42.17+6.60 s | 16:23:46.61+11.04 s | 4.44 | 22.4 |
| DOUDourbes | 39.3 | 277 | 16:23:42.37+6.80 s | 16:23:47.51+11.94 s | 5.14 | – |
| CLAClavier | 42.1 | 16 | 16:23:42.40+6.83 s | 16:23:47.58+12.01 s | 5.18 | 7.6 |
| WLFWalferdange | 84.7 | 121 | – | 16:24:00.35+24.78 s | – | – |
| MEMSMembach | 87.4 | 45 | 16:23:51.34+15.77 s | – | – | – |
| BOUBougnies | 93.0 | 294 | 16:23:51.11+15.54 s | – | – | – |
| SKQSteenkerque | 100.3 | 312 | 16:23:53.41+17.84 s | – | – | – |
| LESLessines | 117.6 | 309 | 16:23:55.73+20.16 s | – | – | – |
| Dutch seismic network (KNMI)1 station | ||||||
| HGNHeimansgroeve | 96.9 | 35 | 16:23:53.44+17.87 s | – | – | – |