OTTANGE (FR)
Quarry blast19 April 2021
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 12:05:462021-04-19
- UTC
- 10:05:462021-04-19
Main parameters
| Date and time | 2021-04-19 10:05:46 UTC 2021-04-19 12:05:46 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 49.478° N, 5.940° E Uncertainty ± 4.3 km |
| Event ID | ROB 13175 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-04-19 12:17:18 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
- 54.2 – 118.7km
- Mean velocity, P wave
- 6.0km/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 0.21 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 | 54.2 | 20 | 10:05:55.64+9.50 s | 10:06:02.30+16.16 s | 6.66 |
| KLBKalborn | 70.2 | 10 | 10:05:58.45+12.31 s | – | – |
| RCHRochefort | 91.1 | 326 | 10:06:01.70+15.56 s | 10:06:12.97+26.83 s | 11.27 |
| CLAClavier | 114.2 | 337 | 10:06:05.98+19.84 s | – | – |
| DOUDourbes | 118.7 | 306 | 10:06:06.09+19.95 s | – | – |
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