ROCKESKYLL (DE)
Quarry blast15 May 2018
- Magnitude
- 2.3ML
- Depth
- –
- Belgian time
- 10:10:372018-05-15
- UTC
- 08:10:372018-05-15
Main parameters
| Date and time | 2018-05-15 08:10:37 UTC 2018-05-15 10:10:37 Belgian time |
|---|---|
| Magnitude | ML 2.3 |
| Epicentral coordinates | 50.258° N, 6.686° E Uncertainty ± 2.6 km |
| Event ID | ROB 6600 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-05-16 10:14:47 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
- 7
- Epicentral distance
- 44.8 – 150.5km
- Mean velocity, P wave
- 5.5km/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: 5 measurements, root-mean-square deviation 0.19 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)7 stations | |||||
| KLBKalborn | 44.8 | 247 | 08:10:44.41+7.04 s | – | – |
| HOUHouvegnez | 49.7 | 283 | 08:10:45.30+7.93 s | – | – |
| VIAVianden | 49.9 | 224 | 08:10:45.42+8.05 s | – | – |
| MRGMont Rigi | 51.7 | 303 | 08:10:46.18+8.81 s | – | – |
| WLFWalferdange | 76.5 | 210 | 08:10:50.22+12.85 s | – | – |
| MRDMaredsous | 136.8 | 273 | 08:11:00.83+23.46 s | 08:11:17.15+39.78 s | 16.32 |
| DOUDourbes | 150.5 | 264 | 08:11:02.59+25.22 s | 08:11:21.65+44.28 s | 19.06 |