NEUFVILLES (BE)
Quarry blast4 July 2017
- Magnitude
- 1.6ML
- Depth
- 6.3km ± 3.9
- Belgian time
- 14:04:052017-07-04
- UTC
- 12:04:052017-07-04
Main parameters
| Date and time | 2017-07-04 12:04:05 UTC 2017-07-04 14:04:05 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.574° N, 4.036° E Uncertainty ± 1.7 km |
| Depth of hypocenter | 6.3 ± 3.9 km |
| Event ID | ROB 5755 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-07-04 14:36:09 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
- 8.9 – 66.5km
- Mean velocity, P wave
- 5.9km/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 6.3 km. P wave: 6 measurements, root-mean-square deviation 0.14 s. S wave: 4 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)6 stations | ||||||
| SKQSteenkerque | 8.9 | 20 | 12:04:07.32+1.88 s | 12:04:08.69+3.25 s | 1.37 | 102.1 |
| BRQBracquegnies | 12.5 | 145 | 12:04:07.80+2.36 s | – | – | – |
| RQRRonquières | 13.9 | 75 | 12:04:08.02+2.58 s | 12:04:09.98+4.54 s | 1.96 | – |
| SNFSeneffe | 18.9 | 112 | 12:04:08.96+3.52 s | 12:04:11.86+6.42 s | 2.90 | – |
| LESLessines | 20.5 | 318 | 12:04:09.43+3.99 s | 12:04:11.88+6.44 s | 2.45 | – |
| DOUDourbes | 66.5 | 143 | 12:04:16.69+11.25 s | – | – | – |
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