CONSTHUM (LU)
Quarry blast9 July 2018
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 17:19:362018-07-09
- UTC
- 15:19:362018-07-09
Main parameters
| Date and time | 2018-07-09 15:19:36 UTC 2018-07-09 17:19:36 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 49.983° N, 6.073° E Uncertainty ± 0.5 km |
| Event ID | ROB 6935 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-11 11:06:47 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
- 10.7 – 106.6km
- 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: 6 measurements, root-mean-square deviation 0.10 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)6 stations | |||||
| VIAVianden | 10.7 | 120 | 15:19:38.66+2.13 s | 15:19:40.45+3.92 s | 1.79 |
| KLBKalborn | 13.2 | 11 | 15:19:39.06+2.53 s | 15:19:40.96+4.43 s | 1.90 |
| WLFWalferdange | 36.0 | 171 | 15:19:42.92+6.39 s | 15:19:47.43+10.90 s | 4.51 |
| CLAClavier | 73.4 | 312 | 15:19:49.07+12.54 s | – | – |
| GESGesves | 83.4 | 303 | 15:19:51.13+14.60 s | – | – |
| DOUDourbes | 106.6 | 277 | 15:19:54.97+18.44 s | – | – |
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