ELSENBORN (BE)
Controlled explosion8 February 2021
- Magnitude
- 0.7ML
- Depth
- –
- Belgian time
- 12:51:172021-02-08
- UTC
- 11:51:172021-02-08
Main parameters
| Date and time | 2021-02-08 11:51:17 UTC 2021-02-08 12:51:17 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.459° N, 6.270° E Uncertainty ± 0.4 km |
| Event ID | ROB 12280 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-02-12 11:49:46 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
- 13
- Epicentral distance
- 11.4 – 43.1km
- Mean velocity, P wave
- 6.0km/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: 13 measurements, root-mean-square deviation 0.11 s. S wave: 12 measurements, root-mean-square deviation 0.15 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | ||||||
| MRGMont Rigi | 15.0 | 293 | 11:51:19.77+2.71 s | 11:51:21.87+4.81 s | 2.10 | – |
| TNLTernell | 17.3 | 325 | 11:51:20.20+3.14 s | 11:51:22.60+5.54 s | 2.40 | – |
| HOUHouvegnez | 22.1 | 238 | 11:51:21.02+3.96 s | 11:51:23.59+6.53 s | 2.57 | 13.9 |
| MEMHMembach | 24.9 | 312 | 11:51:21.57+4.51 s | 11:51:24.88+7.82 s | 3.31 | – |
| KLBKalborn | 41.5 | 196 | 11:51:24.27+7.21 s | 11:51:29.68+12.62 s | 5.41 | 1.5 |
| Bensberg seismic network (University of Cologne, Germany)4 stations | ||||||
| KLLKalltalsperre | 21.1 | 8 | 11:51:20.80+3.74 s | 11:51:23.54+6.48 s | 2.74 | – |
| DREDreilägerbach | 22.9 | 353 | 11:51:21.23+4.17 s | 11:51:24.14+7.08 s | 2.91 | – |
| HILHillesheim | 34.5 | 122 | 11:51:23.42+6.36 s | – | – | – |
| STBSteinbachtalsperre | 43.1 | 69 | 11:51:24.43+7.37 s | 11:51:30.09+13.03 s | 5.66 | – |
| Dutch seismic network (KNMI)2 stations | ||||||
| HGNHeimansgroeve | 41.6 | 325 | 11:51:24.39+7.33 s | 11:51:29.75+12.69 s | 5.36 | – |
| TERZTerziet | 42.0 | 322 | 11:51:24.37+7.31 s | 11:51:29.75+12.69 s | 5.38 | – |
| Network JCK2 stations | ||||||
| OLFOleftalsperre | 11.4 | 70 | 11:51:19.08+2.02 s | 11:51:20.93+3.87 s | 1.85 | – |
| GSHGrosshau | 31.8 | 14 | 11:51:22.71+5.65 s | 11:51:26.57+9.51 s | 3.86 | – |