MARCHE-LES-DAMES (BE)
Known mine explosion25 April 2014
- Magnitude
- 1.7ML
- Depth
- 10.0km ± 24.0
- Belgian time
- 14:32:302014-04-25
- UTC
- 12:32:302014-04-25
Main parameters
| Date and time | 2014-04-25 12:32:30 UTC 2014-04-25 14:32:30 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.495° N, 4.967° E Uncertainty ± 7.4 km |
| Depth of hypocenter | 10.0 ± 24.0 km |
| Event ID | ROB 5111 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2014-04-28 12:54:07 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
- 7
- Epicentral distance
- 14.9 – 75.0km
- Mean velocity, P wave
- 6.2km/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 10.0 km. P wave: 7 measurements, root-mean-square deviation 0.55 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)7 stations | ||||||
| GESGesves | 14.9 | 145 | 12:32:32.83+2.32 s | – | – | – |
| CLAClavier | 25.2 | 110 | 12:32:34.53+4.02 s | – | – | – |
| MRDMaredsous | 25.7 | 213 | 12:32:35.27+4.76 s | 12:32:39.26+8.75 s | 3.99 | – |
| STISart Tilman | 43.4 | 77 | 12:32:38.87+8.36 s | – | – | – |
| SNFSeneffe | 48.5 | 272 | 12:32:38.55+8.04 s | – | – | – |
| SKQSteenkerque | 65.1 | 286 | 12:32:41.13+10.62 s | 12:32:50.24+19.73 s | 9.11 | – |
| MEMSMembach | 75.0 | 80 | 12:32:42.26+11.75 s | 12:32:53.12+22.61 s | 10.86 | 18.0 |
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