FOISCHES (FR)
Quarry blast26 June 2018
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 14:02:212018-06-26
- UTC
- 12:02:212018-06-26
Main parameters
| Date and time | 2018-06-26 12:02:21 UTC 2018-06-26 14:02:21 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.114° N, 4.850° E Uncertainty ± 1.2 km |
| Event ID | ROB 6845 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-11 10:57:09 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
- 8
- Epicentral distance
- 18.4 – 86.6km
- 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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 8 measurements, root-mean-square deviation 0.21 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)8 stations | |||||
| DOUDourbes | 18.4 | 263 | 12:02:24.63+3.62 s | 12:02:27.13+6.12 s | 2.50 |
| MRDMaredsous | 21.7 | 344 | 12:02:25.16+4.15 s | 12:02:28.24+7.23 s | 3.08 |
| GESGesves | 34.5 | 29 | 12:02:27.13+6.12 s | – | – |
| CLAClavier | 46.8 | 43 | 12:02:29.24+8.23 s | – | – |
| RQRRonquières | 70.5 | 321 | 12:02:32.65+11.64 s | – | – |
| LCHLa Chartreuse | 79.0 | 42 | 12:02:34.85+13.84 s | – | – |
| SKQSteenkerque | 80.8 | 318 | 12:02:34.75+13.74 s | – | – |
| HOUHouvegnez | 86.6 | 72 | 12:02:35.74+14.73 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