North Sea
Controlled explosion9 June 2022
- Magnitude
- 2.4ML
- Depth
- –
- Belgian time
- 08:23:132022-06-09
- UTC
- 06:23:132022-06-09
Main parameters
| Date and time | 2022-06-09 06:23:13 UTC 2022-06-09 08:23:13 Belgian time |
|---|---|
| Magnitude | ML 2.4 |
| Epicentral coordinates | 51.202° N, 2.758° E Uncertainty ± 1.3 km |
| Event ID | ROB 16295 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-06-09 15:08:51 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
- 13.3 – 199.3km
- Mean velocity, P wave
- 6.0km/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: 4 measurements, root-mean-square deviation 0.09 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)12 stations | |||||
| OSTBOostende | 13.3 | 72 | 06:23:15.61+2.56 s | 06:23:17.44+4.39 s | 1.83 |
| LESLessines | 93.8 | 125 | 06:23:28.83+15.78 s | 06:23:39.20+26.15 s | 10.37 |
| SKQSteenkerque | 111.4 | 123 | 06:23:31.75+18.70 s | 06:23:45.06+32.01 s | 13.31 |
| UCCBUccle | 121.1 | 111 | 06:23:33.41+20.36 s | 06:23:46.95+33.90 s | 13.54 |
| RQRRonquières | 122.6 | 122 | 06:23:33.52+20.47 s | – | – |
| BRQBracquegnies | 125.9 | 129 | 06:23:35.36+22.31 s | – | – |
| SNFSeneffe | 132.1 | 125 | 06:23:35.83+22.78 s | 06:23:52.38+39.33 s | 16.55 |
| TGATangissart | 140.7 | 117 | 06:23:37.05+24.00 s | 06:23:53.92+40.87 s | 16.87 |
| DSLBDessel | 161.2 | 88 | 06:23:40.32+27.27 s | – | – |
| MRDMaredsous | 173.6 | 124 | 06:23:42.30+29.25 s | – | – |
| GESGesves | 187.7 | 118 | 06:23:44.06+31.01 s | – | – |
| CLAClavier | 199.3 | 115 | 06:23:45.80+32.75 s | – | – |
| British Geological Survey (United Kingdom)1 station | |||||
| ELSH | 113.7 | 268 | 06:23:32.34+19.29 s | – | – |