TELLIN (BE)
Quarry blast25 March 2021
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 13:43:522021-03-25
- UTC
- 12:43:522021-03-25
Main parameters
| Date and time | 2021-03-25 12:43:52 UTC 2021-03-25 13:43:52 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.088° N, 5.163° E Uncertainty ± 0.6 km |
| Event ID | ROB 12850 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-26 18:51:49 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
- 8.7 – 67.7km
- 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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 6 measurements, root-mean-square deviation 0.13 s. S wave: 6 measurements, root-mean-square deviation 0.28 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 | |||||
| RCHRochefort | 8.7 | 31 | 12:43:54.09+1.67 s | 12:43:55.31+2.89 s | 1.22 |
| GESGesves | 33.5 | 351 | 12:43:58.31+5.89 s | 12:44:02.87+10.45 s | 4.56 |
| MRDMaredsous | 36.9 | 310 | 12:43:58.86+6.44 s | 12:44:03.88+11.46 s | 5.02 |
| CLAClavier | 38.1 | 15 | 12:43:59.33+6.91 s | 12:44:04.69+12.27 s | 5.36 |
| DOUDourbes | 40.7 | 271 | 12:43:59.77+7.35 s | 12:44:04.78+12.36 s | 5.01 |
| KLBKalborn | 67.7 | 89 | 12:44:04.33+11.91 s | 12:44:12.60+20.18 s | 8.27 |