KIISCHPELT (LU)
Quarry blast15 March 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:55:182021-03-15
- UTC
- 13:55:182021-03-15
Main parameters
| Date and time | 2021-03-15 13:55:18 UTC 2021-03-15 14:55:18 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 49.983° N, 6.030° E Uncertainty ± 0.6 km |
| Event ID | ROB 12785 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-19 18:13:54 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
- 13.4 – 103.6km
- Mean velocity, P wave
- 6.0km/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: 8 measurements, root-mean-square deviation 0.34 s. S wave: 6 measurements, root-mean-square deviation 0.30 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)7 stations | |||||
| VIAVianden | 13.4 | 114 | 13:55:21.32+2.61 s | 13:55:23.17+4.46 s | 1.85 |
| KLBKalborn | 14.1 | 23 | 13:55:21.71+3.00 s | 13:55:24.09+5.38 s | 2.38 |
| HOUHouvegnez | 41.3 | 357 | 13:55:26.54+7.83 s | 13:55:31.00+12.29 s | 4.46 |
| MRGMont Rigi | 58.8 | 3 | 13:55:29.01+10.30 s | 13:55:36.09+17.38 s | 7.08 |
| TNLTernell | 67.4 | 6 | 13:55:30.85+12.14 s | – | – |
| MEMHMembach | 69.6 | 359 | 13:55:31.23+12.52 s | 13:55:39.49+20.78 s | 8.26 |
| DOUDourbes | 103.6 | 277 | 13:55:36.13+17.42 s | 13:55:49.35+30.64 s | 13.22 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 87.1 | 355 | 13:55:34.49+15.78 s | – | – |