RENDEUX (BE)
Quarry blast30 September 2021
- Magnitude
- 1.4ML
- Depth
- 1.0km ± 3.7
- Belgian time
- 13:57:272021-09-30
- UTC
- 11:57:272021-09-30
Main parameters
| Date and time | 2021-09-30 11:57:27 UTC 2021-09-30 13:57:27 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.219° N, 5.586° E Uncertainty ± 0.9 km |
| Depth of hypocenter | 1.0 ± 3.7 km |
| Event ID | ROB 14535 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-10-01 09:15:44 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
- 26.6 – 98.2km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.4km/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. Hypocenter at a depth of 1.0 km. P wave: 8 measurements, root-mean-square deviation 0.19 s. S wave: 4 measurements, root-mean-square deviation 0.40 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 | 26.6 | 255 | 11:57:31.93+4.47 s | 11:57:35.48+8.02 s | 3.55 |
| CLAClavier | 30.1 | 318 | 11:57:32.99+5.53 s | 11:57:36.88+9.42 s | 3.89 |
| HOUHouvegnez | 33.4 | 63 | 11:57:33.25+5.79 s | 11:57:36.73+9.27 s | 3.48 |
| KLBKalborn | 39.6 | 109 | 11:57:34.09+6.63 s | – | – |
| GESGesves | 40.1 | 298 | 11:57:34.67+7.21 s | 11:57:39.22+11.76 s | 4.55 |
| TNLTernell | 56.2 | 43 | 11:57:37.15+9.69 s | – | – |
| DOUDourbes | 72.2 | 259 | 11:57:39.76+12.30 s | – | – |
| SNFSeneffe | 98.2 | 290 | 11:57:44.51+17.05 s | – | – |
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