CONSTHUM (DE)
Quarry blast4 November 2021
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 15:08:492021-11-04
- UTC
- 14:08:492021-11-04
Main parameters
| Date and time | 2021-11-04 14:08:49 UTC 2021-11-04 15:08:49 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 49.981° N, 6.048° E Uncertainty ± 0.9 km |
| Event ID | ROB 14685 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-11-08 14:14:14 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
- 6
- Epicentral distance
- 12.2 – 104.8km
- Mean velocity, P wave
- 5.9km/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: 6 measurements, root-mean-square deviation 0.29 s. S wave: 5 measurements, root-mean-square deviation 0.38 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)6 stations | |||||
| VIAVianden | 12.2 | 115 | 14:08:52.09+2.31 s | 14:08:53.91+4.13 s | 1.82 |
| KLBKalborn | 13.9 | 18 | 14:08:52.54+2.76 s | 14:08:54.87+5.09 s | 2.33 |
| HOUHouvegnez | 41.6 | 356 | 14:08:57.20+7.42 s | 14:09:02.77+12.99 s | 5.57 |
| RCHRochefort | 61.9 | 289 | 14:09:00.28+10.50 s | 14:09:07.71+17.93 s | 7.43 |
| TNLTernell | 67.5 | 5 | 14:09:01.78+12.00 s | 14:09:09.66+19.88 s | 7.88 |
| DOUDourbes | 104.8 | 277 | 14:09:08.37+18.59 s | – | – |