TERNEUZEN (NL)
Controlled explosion23 March 2022
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 12:12:182022-03-23
- UTC
- 11:12:182022-03-23
Main parameters
| Date and time | 2022-03-23 11:12:18 UTC 2022-03-23 12:12:18 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 51.351° N, 3.793° E Uncertainty ± 2.2 km |
| Event ID | ROB 15685 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2022-03-24 11:21:34 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
- 10
- Epicentral distance
- 60.9 – 163.6km
- Mean velocity, P wave
- 5.6km/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: 7 measurements, root-mean-square deviation 0.29 s. S wave: 5 measurements, root-mean-square deviation 0.75 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 | |||||
| OSTBOostende | 60.9 | 258 | 11:12:29.30+10.42 s | 11:12:36.24+17.36 s | 6.94 |
| UCCBUccle | 73.4 | 147 | 11:12:31.88+13.00 s | 11:12:38.35+19.47 s | 6.47 |
| SKQSteenkerque | 80.7 | 165 | 11:12:32.71+13.83 s | 11:12:42.80+23.92 s | 10.09 |
| DSLBDessel | 89.7 | 98 | 11:12:33.92+15.04 s | – | – |
| TGATangissart | 97.5 | 148 | 11:12:35.32+16.44 s | 11:12:46.70+27.82 s | 11.38 |
| SNFSeneffe | 99.6 | 160 | 11:12:36.32+17.44 s | 11:12:47.51+28.63 s | 11.19 |
| BRQBracquegnies | 99.8 | 166 | 11:12:36.14+17.26 s | – | – |
| GESGesves | 140.9 | 139 | 11:12:42.45+23.57 s | 11:12:59.44+40.56 s | 16.99 |
| DOUDourbes | 150.8 | 158 | 11:12:43.87+24.99 s | 11:13:02.27+43.39 s | 18.40 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 163.6 | 113 | 11:12:45.46+26.58 s | – | – |