DAUN (DE)
Quarry blast2 May 2017
- Magnitude
- 2.6ML
- Depth
- –
- Belgian time
- 10:05:462017-05-02
- UTC
- 08:05:462017-05-02
Main parameters
| Date and time | 2017-05-02 08:05:46 UTC 2017-05-02 10:05:46 Belgian time |
|---|---|
| Magnitude | ML 2.6 |
| Epicentral coordinates | 50.192° N, 6.863° E Uncertainty ± 4.6 km |
| Event ID | ROB 5683 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-05-02 11:34:53 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
- 12
- Epicentral distance
- 66.4 – 162.5km
- Mean velocity, P wave
- 5.3km/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: 5 measurements, root-mean-square deviation 0.69 s. S wave: 6 measurements, root-mean-square deviation 1.28 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)10 stations | |||||
| MRGMont Rigi | 66.4 | 303 | 08:05:58.19+11.49 s | 08:06:06.63+19.93 s | 8.44 |
| MEMSMembach | 76.3 | 308 | – | 08:06:07.96+21.26 s | – |
| MEMHMembach | 76.3 | 308 | – | 08:06:08.13+21.43 s | – |
| WLFWalferdange | 77.9 | 221 | 08:05:59.87+13.17 s | – | – |
| EBNEben-Emael | 107.7 | 309 | – | 08:06:20.92+34.22 s | – |
| CLAClavier | 114.0 | 283 | – | 08:06:20.01+33.31 s | – |
| RCHRochefort | 116.9 | 269 | 08:06:06.29+19.59 s | – | – |
| GESGesves | 128.4 | 280 | – | 08:06:23.88+37.18 s | – |
| MRDMaredsous | 149.9 | 275 | 08:06:11.61+24.91 s | 08:06:29.70+43.00 s | 18.09 |
| DOUDourbes | 162.5 | 267 | 08:06:13.21+26.51 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 91.7 | 314 | 08:06:01.58+14.88 s | 08:06:12.18+25.48 s | 10.60 |
| German Regional Seismic Network (BGR, Germany)1 station | |||||
| TNSTaunus Observatorium Kleiner Feldberg | 113.1 | 88 | 08:06:07.20+20.50 s | – | – |