BARRY (BE)
Known mine explosion24 July 2015
- Magnitude
- 1.5ML
- Depth
- 1.8km ± 13.0
- Belgian time
- 13:02:172015-07-24
- UTC
- 11:02:172015-07-24
Main parameters
| Date and time | 2015-07-24 11:02:17 UTC 2015-07-24 13:02:17 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.593° N, 3.522° E Uncertainty ± 6.3 km |
| Depth of hypocenter | 1.8 ± 13.0 km |
| Event ID | ROB 5390 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-07-24 13:30:49 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
- 6
- Epicentral distance
- 26.2 – 127.7km
- Mean velocity, P wave
- 5.8km/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. Hypocenter at a depth of 1.8 km. P wave: 5 measurements, root-mean-square deviation 0.39 s. S wave: 4 measurements, root-mean-square deviation 0.67 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | ||||||
| LESLessines | 26.2 | 60 | 11:02:21.74+4.41 s | 11:02:25.65+8.32 s | 3.91 | – |
| BOUBougnies | 37.6 | 127 | 11:02:24.24+6.91 s | – | – | – |
| SKQSteenkerque | 40.0 | 81 | 11:02:23.77+6.44 s | 11:02:29.11+11.78 s | 5.34 | 24.3 |
| SNFSeneffe | 54.7 | 99 | 11:02:26.02+8.69 s | 11:02:32.71+15.38 s | 6.69 | – |
| DOUDourbes | 94.3 | 126 | 11:02:33.44+16.11 s | 11:02:46.41+29.08 s | 12.97 | – |
| CLAClavier | 127.7 | 98 | 11:02:38.74+21.41 s | 11:02:55.32+37.99 s | 16.58 | – |