RECKENERWALD (LU)
Quarry blast9 February 2021
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 12:14:542021-02-09
- UTC
- 11:14:542021-02-09
Main parameters
| Date and time | 2021-02-09 11:14:54 UTC 2021-02-09 12:14:54 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 49.736° N, 6.056° E Uncertainty ± 2.7 km |
| Event ID | ROB 12370 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-02-20 18:33:31 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
- 9
- Epicentral distance
- 24.5 – 114.7km
- Mean velocity, P wave
- 6.1km/s
- Mean velocity, S wave
- 3.5km/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: 9 measurements, root-mean-square deviation 0.31 s. S wave: 9 measurements, root-mean-square deviation 0.36 s.
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)8 stations | |||||
| VIAVianden | 24.5 | 25 | 11:14:58.89+4.35 s | 11:15:01.87+7.33 s | 2.98 |
| KLBKalborn | 40.7 | 5 | 11:15:01.73+7.19 s | 11:15:07.00+12.46 s | 5.27 |
| HOUHouvegnez | 68.9 | 357 | 11:15:06.13+11.59 s | 11:15:14.75+20.21 s | 8.62 |
| RCHRochefort | 75.6 | 308 | 11:15:06.77+12.23 s | 11:15:17.09+22.55 s | 10.32 |
| MRGMont Rigi | 86.3 | 1 | 11:15:09.44+14.90 s | 11:15:19.52+24.98 s | 10.08 |
| TNLTernell | 94.7 | 3 | 11:15:10.83+16.29 s | 11:15:21.57+27.03 s | 10.74 |
| MEMHMembach | 97.2 | 358 | 11:15:10.90+16.36 s | 11:15:22.25+27.71 s | 11.35 |
| DOUDourbes | 112.3 | 291 | 11:15:13.19+18.65 s | 11:15:27.05+32.51 s | 13.86 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 114.7 | 356 | 11:15:14.33+19.79 s | 11:15:28.21+33.67 s | 13.88 |