WANZE (BE)
Quarry blast6 July 2018
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:26:292018-07-06
- UTC
- 10:26:292018-07-06
Main parameters
| Date and time | 2018-07-06 10:26:29 UTC 2018-07-06 12:26:29 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.538° N, 5.198° E Uncertainty ± 1.5 km |
| Event ID | ROB 6910 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-11 11:03:25 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
- 15.2 – 81.1km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.4km/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 0.18 s. S wave: 4 measurements, root-mean-square deviation 0.31 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 | |||||
| CLAClavier | 15.2 | 151 | 10:26:33.12+3.23 s | 10:26:34.78+4.89 s | 1.66 |
| GESGesves | 18.8 | 205 | 10:26:33.59+3.70 s | 10:26:35.25+5.36 s | 1.66 |
| LCHLa Chartreuse | 30.5 | 68 | 10:26:35.47+5.58 s | 10:26:39.03+9.14 s | 3.56 |
| MRDMaredsous | 40.3 | 229 | 10:26:36.97+7.08 s | 10:26:42.43+12.54 s | 5.46 |
| KLBKalborn | 81.1 | 127 | 10:26:44.32+14.43 s | – | – |