MANTERNACH (LU)
Quarry blast18 July 2022
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 10:52:182022-07-18
- UTC
- 08:52:182022-07-18
Main parameters
| Date and time | 2022-07-18 08:52:18 UTC 2022-07-18 10:52:18 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 49.723° N, 6.368° E Uncertainty ± 1.5 km |
| Event ID | ROB 16620 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-07-21 23:44:16 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
- 10
- Epicentral distance
- 26.5 – 133.9km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.5km/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: 9 measurements, root-mean-square deviation 0.31 s. S wave: 7 measurements, root-mean-square deviation 0.73 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)9 stations | |||||
| VIAVianden | 26.5 | 333 | 08:52:23.30+4.54 s | – | – |
| KLBKalborn | 45.9 | 336 | 08:52:27.02+8.26 s | 08:52:33.34+14.58 s | 6.32 |
| HOUHouvegnez | 74.9 | 340 | 08:52:32.05+13.29 s | 08:52:39.64+20.88 s | 7.59 |
| MRGMont Rigi | 90.1 | 347 | 08:52:34.02+15.26 s | 08:52:46.09+27.33 s | 12.07 |
| RCHRochefort | 95.0 | 301 | 08:52:35.39+16.63 s | 08:52:45.82+27.06 s | 10.43 |
| MEMHMembach | 101.8 | 346 | 08:52:36.53+17.77 s | 08:52:48.16+29.40 s | 11.63 |
| CLAClavier | 108.7 | 316 | 08:52:38.26+19.50 s | 08:52:50.50+31.74 s | 12.24 |
| GESGesves | 117.7 | 309 | 08:52:38.88+20.12 s | 08:52:53.40+34.64 s | 14.52 |
| DOUDourbes | 133.9 | 289 | 08:52:41.75+22.99 s | 08:52:57.66+38.90 s | 15.91 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 119.9 | 345 | 08:52:39.45+20.69 s | – | – |