TELLIN (BE)
Quarry blast4 March 2021
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 14:02:302021-03-04
- UTC
- 13:02:302021-03-04
Main parameters
| Date and time | 2021-03-04 13:02:30 UTC 2021-03-04 14:02:30 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.075° N, 5.170° E Uncertainty ± 1.3 km |
| Event ID | ROB 12685 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-05 18:53:37 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
- 9.8 – 100.4km
- Mean velocity, P wave
- 5.4km/s
- Mean velocity, S wave
- 3.2km/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: 5 measurements, root-mean-square deviation 0.20 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 | 9.8 | 25 | 13:02:32.53+1.86 s | 13:02:33.74+3.07 s | 1.21 |
| GESGesves | 35.0 | 350 | 13:02:37.06+6.39 s | 13:02:41.52+10.85 s | 4.46 |
| MRDMaredsous | 38.2 | 312 | 13:02:37.63+6.96 s | 13:02:42.45+11.78 s | 4.82 |
| CLAClavier | 39.4 | 14 | 13:02:37.76+7.09 s | 13:02:43.13+12.46 s | 5.37 |
| DOUDourbes | 41.2 | 273 | 13:02:37.99+7.32 s | 13:02:43.07+12.40 s | 5.08 |
| SKQSteenkerque | 100.4 | 310 | 13:02:49.30+18.63 s | – | – |