MOURCOURT (BE)
Known mine explosion21 June 2013
- Magnitude
- 1.5ML
- Depth
- 10.5km ± 3.4
- Belgian time
- 12:11:242013-06-21
- UTC
- 10:11:242013-06-21
Main parameters
| Date and time | 2013-06-21 10:11:24 UTC 2013-06-21 12:11:24 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.651° N, 3.454° E Uncertainty ± 2.8 km |
| Depth of hypocenter | 10.5 ± 3.4 km |
| Event ID | ROB 4909 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-06-21 12:44:47 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
- 7
- Epicentral distance
- 44.3 – 133.5km
- Mean velocity, P wave
- 6.0km/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 10.5 km. P wave: 6 measurements, root-mean-square deviation 0.12 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)7 stations | ||||||
| SKQSteenkerque | 44.3 | 90 | 10:11:32.33+7.74 s | 10:11:38.13+13.54 s | 5.80 | 19.7 |
| BOUBougnies | 45.4 | 130 | 10:11:32.55+7.96 s | – | – | – |
| RQRRonquières | 54.8 | 95 | 10:11:33.89+9.30 s | – | – | – |
| SNFSeneffe | 60.8 | 105 | 10:11:34.72+10.13 s | 10:11:42.02+17.43 s | 7.30 | – |
| MRDMaredsous | 101.0 | 112 | 10:11:41.65+17.06 s | – | – | – |
| DOUDourbes | 102.1 | 127 | 10:11:41.76+17.17 s | 10:11:54.21+29.62 s | 12.45 | – |
| CLAClavier | 133.5 | 100 | 10:11:46.38+21.79 s | – | – | – |