SOIGNIES (BE)
Quarry blast10 July 2018
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 14:01:562018-07-10
- UTC
- 12:01:562018-07-10
Main parameters
| Date and time | 2018-07-10 12:01:56 UTC 2018-07-10 14:01:56 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.576° N, 4.072° E Uncertainty ± 1.8 km |
| Event ID | ROB 6945 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-11 11:05:55 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
- 5
- Epicentral distance
- 8.2 – 89.0km
- Mean velocity, P wave
- 5.9km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 5 measurements, root-mean-square deviation 0.08 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | |||||
| SKQSteenkerque | 8.2 | 4 | 12:01:58.24+1.57 s | 12:01:59.56+2.89 s | 1.32 |
| RQRRonquières | 11.4 | 73 | 12:01:58.82+2.15 s | – | – |
| BRQBracquegnies | 11.5 | 157 | 12:01:58.70+2.03 s | – | – |
| MRDMaredsous | 58.1 | 121 | 12:02:06.88+10.21 s | – | – |
| CLAClavier | 89.0 | 101 | 12:02:11.96+15.29 s | – | – |
Did you feel an earthquake?The inquiry takes just a few minutes. Every report helps seismologists assess the effects of the earthquake.
Take the inquiry