RENDEUX (BE)
Quarry blast15 October 2021
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:53:422021-10-15
- UTC
- 12:53:422021-10-15
Main parameters
| Date and time | 2021-10-15 12:53:42 UTC 2021-10-15 14:53:42 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.218° N, 5.598° E Uncertainty ± 0.7 km |
| Event ID | ROB 14620 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-10-18 15:09:40 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
- 27.4 – 73.0km
- Mean velocity, P wave
- 6.3km/s
- Mean velocity, S wave
- 3.6km/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 0.27 s. S wave: 6 measurements, root-mean-square deviation 0.22 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 | |||||
| RCHRochefort | 27.4 | 255 | 12:53:48.02+5.03 s | 12:53:51.43+8.44 s | 3.41 |
| CLAClavier | 30.8 | 317 | 12:53:49.16+6.17 s | 12:53:52.20+9.21 s | 3.04 |
| HOUHouvegnez | 32.7 | 62 | 12:53:49.03+6.04 s | 12:53:52.67+9.68 s | 3.64 |
| KLBKalborn | 38.8 | 110 | 12:53:50.27+7.28 s | 12:53:54.84+11.85 s | 4.57 |
| GESGesves | 40.9 | 297 | 12:53:50.64+7.65 s | – | – |
| MRGMont Rigi | 47.1 | 46 | 12:53:51.91+8.92 s | 12:53:57.05+14.06 s | 5.14 |
| VIAVianden | 53.5 | 126 | 12:53:52.22+9.23 s | 12:53:59.02+16.03 s | 6.80 |
| DOUDourbes | 73.0 | 260 | 12:53:55.37+12.38 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 65.2 | 21 | 12:53:54.05+11.06 s | – | – |