MARCHE-LES-DAMES (BE)
Known mine explosion16 July 2015
- Magnitude
- 1.2ML
- Depth
- 2.2km ± 7.8
- Belgian time
- 13:46:372015-07-16
- UTC
- 11:46:372015-07-16
Main parameters
| Date and time | 2015-07-16 11:46:37 UTC 2015-07-16 13:46:37 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.484° N, 4.965° E Uncertainty ± 3.2 km |
| Depth of hypocenter | 2.2 ± 7.8 km |
| Event ID | ROB 5383 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-07-16 13:59:47 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
- 5
- Epicentral distance
- 14.1 – 75.4km
- Mean velocity, P wave
- 5.6km/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 2.2 km. P wave: 5 measurements, root-mean-square deviation 0.23 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)5 stations | ||||||
| GESGesves | 14.1 | 142 | 11:46:39.75+2.05 s | – | – | – |
| MRDMaredsous | 24.6 | 215 | 11:46:42.31+4.61 s | – | – | – |
| CLAClavier | 25.0 | 107 | 11:46:41.94+4.24 s | 11:46:45.38+7.68 s | 3.44 | 17.6 |
| DOUDourbes | 50.7 | 211 | 11:46:46.60+8.90 s | – | – | – |
| MEMSMembach | 75.4 | 79 | 11:46:50.85+13.15 s | – | – | – |
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