HILLESHEIM (DE)
Quarry blast22 January 2019
- Magnitude
- 2.2ML
- Depth
- –
- Belgian time
- 11:07:582019-01-22
- UTC
- 10:07:582019-01-22
Main parameters
| Date and time | 2019-01-22 10:07:58 UTC 2019-01-22 11:07:58 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.286° N, 6.776° E Uncertainty ± 3.3 km |
| Event ID | ROB 7680 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-22 11:26:56 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
- 12
- Epicentral distance
- 51.9 – 157.2km
- Mean velocity, P wave
- 6.2km/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: 10 measurements, root-mean-square deviation 0.48 s. S wave: 5 measurements, root-mean-square deviation 0.48 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)10 stations | |||||
| KLBKalborn | 51.9 | 247 | 10:08:07.10+8.48 s | 10:08:13.74+15.12 s | 6.64 |
| HOUHouvegnez | 55.4 | 278 | 10:08:07.77+9.15 s | – | – |
| MRGMont Rigi | 55.7 | 297 | 10:08:07.97+9.35 s | – | – |
| VIAVianden | 56.6 | 227 | 10:08:08.18+9.56 s | 10:08:15.57+16.95 s | 7.39 |
| MEMHMembach | 65.2 | 304 | 10:08:10.00+11.38 s | 10:08:18.19+19.57 s | 8.19 |
| EBNEben-Emael | 96.3 | 307 | 10:08:15.01+16.39 s | 10:08:27.93+29.31 s | 12.92 |
| CLAClavier | 105.9 | 279 | 10:08:16.35+17.73 s | – | – |
| RCHRochefort | 111.5 | 263 | 10:08:16.08+17.46 s | – | – |
| MRDMaredsous | 143.1 | 271 | 10:08:22.99+24.37 s | – | – |
| DOUDourbes | 157.2 | 263 | 10:08:25.13+26.51 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 80.0 | 312 | 10:08:12.75+14.13 s | 10:08:21.76+23.14 s | 9.01 |
| VKBValkenburg | 95.4 | 313 | 10:08:13.98+15.36 s | – | – |