MARCHOVELETTE (BE)
Known mine explosion18 March 2014
- Magnitude
- 1.5ML
- Depth
- 4.3km ± 6.8
- Belgian time
- 14:26:042014-03-18
- UTC
- 13:26:042014-03-18
Main parameters
| Date and time | 2014-03-18 13:26:04 UTC 2014-03-18 14:26:04 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.509° N, 4.966° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 4.3 ± 6.8 km |
| Event ID | ROB 5074 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2014-03-18 15:30:41 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
- 16.3 – 75.8km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.4km/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 4.3 km. P wave: 10 measurements, root-mean-square deviation 0.31 s. S wave: 4 measurements, root-mean-square deviation 0.59 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)10 stations | ||||||
| GESGesves | 16.3 | 148 | 13:26:06.77+2.36 s | – | – | – |
| CLAClavier | 25.9 | 113 | 13:26:08.85+4.44 s | 13:26:12.08+7.67 s | 3.23 | 31.1 |
| MRDMaredsous | 27.0 | 211 | 13:26:09.04+4.63 s | – | – | – |
| RCHRochefort | 43.6 | 155 | 13:26:11.63+7.22 s | 13:26:18.17+13.76 s | 6.54 | – |
| LCHLa Chartreuse | 47.1 | 72 | 13:26:12.75+8.34 s | – | – | – |
| SNFSeneffe | 48.4 | 270 | 13:26:12.75+8.34 s | – | – | – |
| DOUDourbes | 53.1 | 210 | 13:26:14.06+9.65 s | 13:26:19.97+15.56 s | 5.91 | 18.6 |
| SKQSteenkerque | 64.6 | 284 | 13:26:15.16+10.75 s | – | – | – |
| MEMSMembach | 74.8 | 81 | 13:26:17.74+13.33 s | – | – | – |
| HOUHouvegnez | 75.8 | 103 | 13:26:17.38+12.97 s | 13:26:25.94+21.53 s | 8.56 | – |