NEUFVILLES (BE)
Quarry blast8 October 2019
- Magnitude
- 1.2ML
- Depth
- 3.1km ± 2.5
- Belgian time
- 14:03:442019-10-08
- UTC
- 12:03:442019-10-08
Main parameters
| Date and time | 2019-10-08 12:03:44 UTC 2019-10-08 14:03:44 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.549° N, 4.030° E Uncertainty ± 1.1 km |
| Depth of hypocenter | 3.1 ± 2.5 km |
| Event ID | ROB 8710 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-10-09 14:36:44 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
- 4
- Epicentral distance
- 10.7 – 35.4km
- Mean velocity, P wave
- 5.8km/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 3.1 km. P wave: 4 measurements, root-mean-square deviation 0.03 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)4 stations | ||||||
| BRQBracquegnies | 10.7 | 135 | 12:03:46.39+2.02 s | – | – | – |
| SKQSteenkerque | 11.7 | 18 | 12:03:46.60+2.23 s | 12:03:48.02+3.65 s | 1.42 | 37.2 |
| RQRRonquières | 15.2 | 65 | 12:03:47.23+2.86 s | 12:03:49.04+4.67 s | 1.81 | – |
| TGATangissart | 35.4 | 80 | 12:03:50.62+6.25 s | – | – | – |
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