MANHAY (BE)
Known mine explosion7 April 2015
- Magnitude
- 1.4ML
- Depth
- 10.0km
- Belgian time
- 14:06:312015-04-07
- UTC
- 12:06:312015-04-07
Main parameters
| Date and time | 2015-04-07 12:06:31 UTC 2015-04-07 14:06:31 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.274° N, 5.643° E Uncertainty ± 5.9 km |
| Depth of hypocenter | 10.0 km |
| Event ID | ROB 5308 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-04-09 12:41:20 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
- 9
- Epicentral distance
- 27.3 – 586.1km
- Mean velocity, P wave
- 2.8km/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: 6 measurements, root-mean-square deviation 6.95 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)8 stations | |||||
| HOUHouvegnez | 27.3 | 71 | 12:06:36.14+4.29 s | – | – |
| STISart Tilman | 34.8 | 351 | 12:06:39.69+7.84 s | – | – |
| LCHLa Chartreuse | 40.7 | 356 | 12:06:53.07+21.22 s | – | – |
| MRDMaredsous | 62.4 | 273 | 12:06:40.35+8.50 s | – | – |
| CSECourt-Saint-Etienne | 84.2 | 296 | 12:07:06.93+35.08 s | – | – |
| RQRRonquières | 107.3 | 291 | 12:07:04.56+32.71 s | – | – |
| BOUBougnies | 121.6 | 277 | 12:06:55.18+23.33 s | – | – |
| ZEVZevekote | 216.2 | 297 | 12:07:03.20+31.35 s | – | – |
| Network PRU1 station | |||||
| KHCKasperske Hory | 586.1 | 99 | 12:07:52.46+80.61 s | – | – |