ROCKESKYLL (DE)
Quarry blast5 July 2019
- Magnitude
- 2.2ML
- Depth
- –
- Belgian time
- 09:19:222019-07-05
- UTC
- 07:19:222019-07-05
Main parameters
| Date and time | 2019-07-05 07:19:22 UTC 2019-07-05 09:19:22 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.253° N, 6.687° E Uncertainty ± 2.2 km |
| Event ID | ROB 8320 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-05 09:28:54 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
- 44.6 – 150.5km
- Mean velocity, P wave
- 5.5km/s
- Mean velocity, S wave
- 3.2km/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: 7 measurements, root-mean-square deviation 0.43 s. S wave: 7 measurements, root-mean-square deviation 0.60 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 | |||||
| KLBKalborn | 44.6 | 248 | 07:19:29.57+6.98 s | 07:19:35.84+13.25 s | 6.27 |
| VIAVianden | 49.5 | 225 | 07:19:30.59+8.00 s | 07:19:37.68+15.09 s | 7.09 |
| HOUHouvegnez | 49.9 | 283 | 07:19:29.99+7.40 s | 07:19:35.97+13.38 s | 5.98 |
| MRGMont Rigi | 52.1 | 304 | – | 07:19:38.13+15.54 s | – |
| MEMSMembach | 62.3 | 310 | 07:19:32.46+9.87 s | – | – |
| MEMHMembach | 62.3 | 310 | 07:19:32.56+9.97 s | 07:19:40.38+17.79 s | 7.82 |
| GESGesves | 114.9 | 278 | 07:19:43.11+20.52 s | 07:19:56.72+34.13 s | 13.61 |
| MRDMaredsous | 136.9 | 273 | 07:19:45.93+23.34 s | 07:20:02.67+40.08 s | 16.74 |
| DOUDourbes | 150.5 | 264 | 07:19:47.35+24.76 s | 07:20:06.52+43.93 s | 19.17 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 78.1 | 317 | 07:19:35.05+12.46 s | 07:19:45.47+22.88 s | 10.42 |