ANDERNACH (DE)
Quarry blast10 May 2021
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 11:53:502021-05-10
- UTC
- 09:53:502021-05-10
Main parameters
| Date and time | 2021-05-10 09:53:50 UTC 2021-05-10 11:53:50 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.437° N, 7.354° E Uncertainty ± 3.2 km |
| Event ID | ROB 13365 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-05-10 16:53:49 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
- 91.1 – 200.3km
- Mean velocity, P wave
- 7.9km/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)7 stations | |||||
| MRGMont Rigi | 91.1 | 276 | 09:54:06.25+15.39 s | 09:54:18.29+27.43 s | 12.04 |
| KLBKalborn | 96.3 | 248 | 09:54:07.57+16.71 s | 09:54:19.82+28.96 s | 12.25 |
| MEMSMembach | 97.2 | 282 | 09:54:07.04+16.18 s | 09:54:21.84+30.98 s | 14.80 |
| MEMHMembach | 97.2 | 282 | 09:54:07.05+16.19 s | – | – |
| CLAClavier | 145.8 | 270 | 09:54:14.68+23.82 s | 09:54:31.99+41.13 s | 17.31 |
| RCHRochefort | 154.7 | 259 | 09:54:15.79+24.93 s | 09:54:34.01+43.15 s | 18.22 |
| DOUDourbes | 200.3 | 260 | 09:54:22.48+31.62 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 107.0 | 290 | 09:54:08.37+17.51 s | – | – |