TELLIN (BE)
Quarry blast26 July 2022
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 13:14:222022-07-26
- UTC
- 11:14:222022-07-26
Main parameters
| Date and time | 2022-07-26 11:14:22 UTC 2022-07-26 13:14:22 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.077° N, 5.172° E Uncertainty ± 3.3 km |
| Event ID | ROB 16685 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-08-08 11:10:08 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
- 9
- Epicentral distance
- 9.5 – 128.7km
- Mean velocity, P wave
- 5.5km/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: 8 measurements, root-mean-square deviation 0.16 s. S wave: 5 measurements, root-mean-square deviation 0.27 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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)9 stations | |||||
| RCHRochefort | 9.5 | 24 | 11:14:24.24+1.48 s | 11:14:25.61+2.85 s | 1.37 |
| GESGesves | 34.8 | 350 | 11:14:28.79+6.03 s | – | – |
| MRDMaredsous | 38.2 | 311 | 11:14:29.07+6.31 s | 11:14:34.24+11.48 s | 5.17 |
| CLAClavier | 39.2 | 14 | 11:14:29.48+6.72 s | 11:14:34.61+11.85 s | 5.13 |
| DOUDourbes | 41.4 | 273 | 11:14:29.71+6.95 s | 11:14:34.75+11.99 s | 5.04 |
| MEMHMembach | 84.0 | 45 | 11:14:37.57+14.81 s | – | – |
| MEMSMembach | 84.0 | 45 | 11:14:37.59+14.83 s | – | – |
| SKQSteenkerque | 100.4 | 310 | 11:14:40.93+18.17 s | 11:14:53.84+31.08 s | 12.91 |
| DSLSDessel | 128.7 | 357 | 11:14:45.18+22.42 s | – | – |