HILLESHEIM (DE)
Quarry blast5 April 2018
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 10:51:172018-04-05
- UTC
- 08:51:172018-04-05
Main parameters
| Date and time | 2018-04-05 08:51:17 UTC 2018-04-05 10:51:17 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.292° N, 6.639° E Uncertainty ± 0.6 km |
| Event ID | ROB 6470 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-04-05 11:06:35 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
- 8
- Epicentral distance
- 43.5 – 147.6km
- Mean velocity, P wave
- 6.1km/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 0.25 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 | |||||
| KLBKalborn | 43.5 | 241 | 08:51:25.53+7.71 s | 08:51:31.52+13.70 s | 5.99 |
| HOUHouvegnez | 45.7 | 279 | 08:51:25.97+8.15 s | – | – |
| VIAVianden | 50.6 | 218 | 08:51:26.64+8.82 s | 08:51:32.85+15.03 s | 6.21 |
| MEMSMembach | 56.9 | 308 | 08:51:27.13+9.31 s | – | – |
| WLFWalferdange | 78.2 | 207 | 08:51:31.29+13.47 s | – | – |
| DOUDourbes | 147.6 | 262 | 08:51:43.45+25.63 s | 08:52:02.87+45.05 s | 19.42 |
| Network BUG1 station | |||||
| BUGBochum | 135.6 | 19 | 08:51:41.13+23.31 s | – | – |
| German Regional Seismic Network (BGR, Germany)1 station | |||||
| TNSTaunus Observatorium Kleiner Feldberg | 129.2 | 93 | 08:51:39.90+22.08 s | 08:51:55.21+37.39 s | 15.31 |