DUDELANGE (LU)
Quarry blast4 July 2022
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 12:00:392022-07-04
- UTC
- 10:00:392022-07-04
Main parameters
| Date and time | 2022-07-04 10:00:39 UTC 2022-07-04 12:00:39 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 49.506° N, 6.097° E Uncertainty ± 3.4 km |
| Event ID | ROB 16555 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-04 14:17:22 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
- 48.3 – 121.7km
- Mean velocity, P wave
- 5.7km/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 0.59 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | 48.3 | 9 | 10:00:47.85+8.18 s | 10:00:54.12+14.45 s | 6.27 |
| KLBKalborn | 66.0 | 1 | 10:00:51.21+11.54 s | – | – |
| RCHRochefort | 95.5 | 319 | 10:00:54.98+15.31 s | 10:01:06.46+26.79 s | 11.48 |
| MRGMont Rigi | 111.8 | 359 | 10:00:59.57+19.90 s | – | – |
| CLAClavier | 116.4 | 331 | 10:00:59.88+20.21 s | 10:01:14.48+34.81 s | 14.60 |
| GESGesves | 121.7 | 324 | 10:01:00.19+20.52 s | – | – |