NAMECHE (BE)
Known mine explosion9 April 2015
- Magnitude
- 2.3ML
- Depth
- –
- Belgian time
- 14:24:022015-04-09
- UTC
- 12:24:022015-04-09
Main parameters
| Date and time | 2015-04-09 12:24:02 UTC 2015-04-09 14:24:02 Belgian time |
|---|---|
| Magnitude | ML 2.3 |
| Epicentral coordinates | 50.465° N, 4.997° E Uncertainty ± 1.7 km |
| Event ID | ROB 5313 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-04-10 13:34:54 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
- 17
- Epicentral distance
- 11.0 – 81.5km
- Mean velocity, P wave
- 5.4km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 17 measurements, root-mean-square deviation 0.82 s. S wave: 15 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)17 stations | ||||||
| GESGesves | 11.0 | 144 | 12:24:03.88+1.46 s | 12:24:05.37+2.95 s | 1.49 | – |
| CLAClavier | 22.3 | 103 | 12:24:05.93+3.51 s | 12:24:09.33+6.91 s | 3.40 | 208.4 |
| MRDMaredsous | 24.4 | 222 | 12:24:06.35+3.93 s | 12:24:10.25+7.83 s | 3.90 | 227.6 |
| CSECourt-Saint-Etienne | 33.6 | 298 | 12:24:07.05+4.63 s | 12:24:10.99+8.57 s | 3.94 | – |
| RCHRochefort | 38.2 | 154 | 12:24:08.99+6.57 s | 12:24:14.90+12.48 s | 5.91 | 36.3 |
| STISart Tilman | 42.3 | 72 | 12:24:09.93+7.51 s | 12:24:15.46+13.04 s | 5.53 | 56.1 |
| LCHLa Chartreuse | 46.9 | 65 | 12:24:09.89+7.47 s | 12:24:14.93+12.51 s | 5.04 | – |
| DOUDourbes | 50.2 | 215 | 12:24:11.11+8.69 s | 12:24:15.19+12.77 s | 4.08 | – |
| SNFSeneffe | 50.8 | 276 | 12:24:12.54+10.12 s | 12:24:17.88+15.46 s | 5.34 | – |
| UCCSUccle | 58.2 | 310 | 12:24:12.71+10.29 s | – | – | – |
| UCCBUccle | 58.2 | 310 | 12:24:13.89+11.47 s | – | – | – |
| EBNEben-Emael | 60.7 | 52 | 12:24:15.10+12.68 s | 12:24:21.11+18.69 s | 6.01 | 391.6 |
| MEMHMembach | 73.6 | 77 | 12:24:15.39+12.97 s | 12:24:24.87+22.45 s | 9.48 | 17.4 |
| MEMSMembach | 73.6 | 77 | 12:24:15.78+13.36 s | 12:24:24.90+22.48 s | 9.12 | 199.8 |
| BOUBougnies | 75.2 | 264 | 12:24:17.11+14.69 s | 12:24:24.37+21.95 s | 7.26 | – |
| MRGMont Rigi | 76.7 | 86 | 12:24:15.44+13.02 s | 12:24:25.24+22.82 s | 9.80 | – |
| TNLTernell | 81.5 | 80 | 12:24:15.92+13.50 s | 12:24:25.65+23.23 s | 9.73 | – |