HILLESHEIM (DE)
Quarry blast2 February 2018
- Magnitude
- 2.2ML
- Depth
- –
- Belgian time
- 11:14:362018-02-02
- UTC
- 10:14:362018-02-02
Main parameters
| Date and time | 2018-02-02 10:14:36 UTC 2018-02-02 11:14:36 Belgian time |
|---|---|
| Magnitude | ML 2.2 |
| Epicentral coordinates | 50.291° N, 6.670° E Uncertainty ± 1.5 km |
| Event ID | ROB 6265 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-02-02 11:26:28 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
- 6
- Epicentral distance
- 45.4 – 149.8km
- Mean velocity, P wave
- 5.8km/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 0.13 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)5 stations | |||||
| KLBKalborn | 45.4 | 242 | 10:14:44.02+7.70 s | 10:14:50.53+14.21 s | 6.51 |
| HOUHouvegnez | 47.9 | 279 | 10:14:44.56+8.24 s | 10:14:50.49+14.17 s | 5.93 |
| VIAVianden | 51.9 | 220 | 10:14:44.89+8.57 s | – | – |
| WLFWalferdange | 79.1 | 208 | 10:14:49.84+13.52 s | 10:14:59.50+23.18 s | 9.66 |
| DOUDourbes | 149.8 | 262 | 10:15:01.90+25.58 s | 10:15:21.05+44.73 s | 19.15 |
| German Regional Seismic Network (BGR, Germany)1 station | |||||
| TNSTaunus Observatorium Kleiner Feldberg | 127.0 | 93 | 10:14:58.47+22.15 s | – | – |