TELLIN (BE)
Quarry blast30 June 2021
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 15:55:182021-06-30
- UTC
- 13:55:182021-06-30
Main parameters
| Date and time | 2021-06-30 13:55:18 UTC 2021-06-30 15:55:18 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.084° N, 5.167° E Uncertainty ± 0.6 km |
| Event ID | ROB 13820 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-07-05 12:22:54 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
- 9.0 – 67.4km
- Mean velocity, P wave
- 5.8km/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 0.22 s. S wave: 6 measurements, root-mean-square deviation 0.16 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 | 9.0 | 28 | 13:55:19.76+1.73 s | 13:55:21.14+3.11 s | 1.38 |
| GESGesves | 34.0 | 350 | 13:55:24.35+6.32 s | 13:55:28.56+10.53 s | 4.21 |
| MRDMaredsous | 37.4 | 311 | 13:55:24.78+6.75 s | 13:55:29.67+11.64 s | 4.89 |
| CLAClavier | 38.5 | 14 | 13:55:24.70+6.67 s | 13:55:29.90+11.87 s | 5.20 |
| DOUDourbes | 40.9 | 272 | 13:55:25.18+7.15 s | 13:55:30.51+12.48 s | 5.33 |
| KLBKalborn | 67.4 | 88 | 13:55:30.31+12.28 s | 13:55:38.12+20.09 s | 7.81 |