KLEINE BROGEL (BE)
Sonic boom20 November 2020
- Magnitude
- –
- Depth
- –
- Belgian time
- 13:35:402020-11-20
- UTC
- 12:35:402020-11-20
Main parameters
| Date and time | 2020-11-20 12:35:40 UTC 2020-11-20 13:35:40 Belgian time |
|---|---|
| Magnitude | – |
| Epicentral coordinates | 51.260° N, 5.027° E Uncertainty ± 41.8 km |
| Event ID | ROB 11375 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-11-20 14:38:04 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
- 4 – 45.6km
- Mean velocity, P wave
- 0.5km/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: 9 measurements, root-mean-square deviation 4.79 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)5 stations | |||||
| DSLBDessel | 4.1 | 140 | 12:35:35.36−4.64 s | – | – |
| DSLSDessel | 4.1 | 140 | 12:35:35.41−4.59 s | – | – |
| MOLTMol | 6.6 | 141 | 12:35:38.71−1.29 s | 12:35:40.92+0.92 s | 2.21 |
| MOLSMol | 6.6 | 143 | 12:35:40.99+0.99 s | 12:35:41.77+1.77 s | 0.78 |
| OPTBOpitter | 45.6 | 111 | 12:37:03.62+83.62 s | – | – |
| VITO (Mol)3 stations | |||||
| RETVKRetie | 4* | – | 12:35:33.99−6.01 s | – | – |
| RETGVRetie | 4* | – | 12:35:42.29+2.29 s | – | – |
| MOL2AMol | 7* | – | 12:35:51.21+11.21 s | – | – |
| Network not specified1 station | |||||
| MOLIOMol | 7* | – | 12:35:53.23+13.23 s | – | – |
* Distance from the catalogue, rounded to the kilometre: the coordinates of the station are missing from it.