HILLESHEIM (DE)
Quarry blast22 June 2018
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 11:13:362018-06-22
- UTC
- 09:13:362018-06-22
Main parameters
| Date and time | 2018-06-22 09:13:36 UTC 2018-06-22 11:13:36 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.290° N, 6.684° E Uncertainty ± 2.3 km |
| Event ID | ROB 6820 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-06-22 11:36:20 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
- 46.2 – 150.8km
- Mean velocity, P wave
- 6.2km/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: 4 measurements, root-mean-square deviation 0.16 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 | 46.2 | 243 | – | 09:13:49.79+13.20 s | – |
| HOUHouvegnez | 48.9 | 279 | 09:13:44.20+7.61 s | – | – |
| MRGMont Rigi | 49.8 | 300 | 09:13:44.66+8.07 s | – | – |
| VIAVianden | 52.5 | 221 | 09:13:44.66+8.07 s | – | – |
| WLFWalferdange | 79.5 | 209 | 09:13:49.23+12.64 s | 09:14:00.22+23.63 s | 10.99 |
| DOUDourbes | 150.8 | 263 | 09:14:01.61+25.02 s | – | – |
| German Regional Seismic Network (BGR, Germany)1 station | |||||
| TNSTaunus Observatorium Kleiner Feldberg | 125.9 | 93 | 09:13:58.11+21.52 s | – | – |