VELAINES (BE)
Known mine explosion3 September 2015
- Magnitude
- 1.7ML
- Depth
- 10.1km ± 6.7
- Belgian time
- 13:00:042015-09-03
- UTC
- 11:00:042015-09-03
Main parameters
| Date and time | 2015-09-03 11:00:04 UTC 2015-09-03 13:00:04 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.690° N, 3.481° E Uncertainty ± 5.4 km |
| Depth of hypocenter | 10.1 ± 6.7 km |
| Event ID | ROB 5403 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-09-03 13:29:00 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
- 8
- Epicentral distance
- 42.6 – 118.8km
- Mean velocity, P wave
- 6.1km/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 10.1 km. P wave: 8 measurements, root-mean-square deviation 0.19 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)8 stations | ||||||
| SKQSteenkerque | 42.6 | 96 | 11:00:12.55+7.73 s | – | – | – |
| BOUBougnies | 46.9 | 135 | 11:00:12.84+8.02 s | – | – | – |
| BRQBracquegnies | 51.9 | 116 | 11:00:13.77+8.95 s | – | – | – |
| RQRRonquières | 53.5 | 100 | 11:00:13.97+9.15 s | – | – | – |
| SNFSeneffe | 60.2 | 109 | 11:00:14.95+10.13 s | – | – | – |
| MRDMaredsous | 101.0 | 115 | 11:00:21.65+16.83 s | – | – | – |
| DOUDourbes | 103.2 | 129 | 11:00:22.43+17.61 s | 11:00:34.54+29.72 s | 12.11 | 13.4 |
| GESGesves | 118.8 | 106 | 11:00:24.41+19.59 s | – | – | – |
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