RECKENERWALD (LU)
Quarry blast22 February 2021
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 11:14:392021-02-22
- UTC
- 10:14:392021-02-22
Main parameters
| Date and time | 2021-02-22 10:14:39 UTC 2021-02-22 11:14:39 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 49.742° N, 6.064° E Uncertainty ± 1.8 km |
| Event ID | ROB 12425 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-02-23 11:16:25 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
- 5
- Epicentral distance
- 23.7 – 96.6km
- Mean velocity, P wave
- 5.8km/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: 5 measurements, root-mean-square deviation 0.40 s. S wave: 5 measurements, root-mean-square deviation 0.37 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)5 stations | |||||
| VIAVianden | 23.7 | 25 | 10:14:43.32+4.11 s | 10:14:46.88+7.67 s | 3.56 |
| KLBKalborn | 40.0 | 5 | 10:14:46.37+7.16 s | 10:14:51.84+12.63 s | 5.47 |
| HOUHouvegnez | 68.3 | 356 | 10:14:50.99+11.78 s | 10:14:59.51+20.30 s | 8.52 |
| RCHRochefort | 75.6 | 308 | 10:14:52.62+13.41 s | 10:15:01.56+22.35 s | 8.94 |
| MEMHMembach | 96.6 | 358 | 10:14:56.84+17.63 s | 10:15:07.05+27.84 s | 10.21 |