VLISSINGEN (NL)
Controlled explosion7 September 2016
- Magnitude
- 1.7ML
- Depth
- 2.4km ± 8.0
- Belgian time
- 14:22:142016-09-07
- UTC
- 12:22:142016-09-07
Main parameters
| Date and time | 2016-09-07 12:22:14 UTC 2016-09-07 14:22:14 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 51.391° N, 3.740° E Uncertainty ± 6.5 km |
| Depth of hypocenter | 2.4 ± 8.0 km |
| Event ID | ROB 5551 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-09-08 08:49:33 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
- 85.9 – 220.4km
- Mean velocity, P wave
- 5.6km/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. Hypocenter at a depth of 2.4 km. P wave: 5 measurements, root-mean-square deviation 0.58 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)10 stations | ||||||
| SKQSteenkerque | 85.9 | 164 | 12:22:29.29+15.02 s | – | – | – |
| RQRRonquières | 93.7 | 158 | 12:22:29.05+14.78 s | – | – | – |
| MOLTMol | 95.9 | 101 | 12:22:30.46+16.19 s | – | – | – |
| BRQBracquegnies | 105.0 | 164 | 12:22:31.73+17.46 s | – | – | – |
| BOUBougnies | 112.4 | 173 | 12:22:33.80+19.53 s | – | – | – |
| MRDMaredsous | 141.1 | 149 | 12:22:37.94+23.67 s | – | – | – |
| CLAClavier | 154.1 | 134 | 12:22:39.95+25.68 s | 12:22:59.87+45.60 s | 19.92 | 8.3 |
| DOUDourbes | 156.3 | 157 | 12:22:39.96+25.69 s | 12:22:59.38+45.11 s | 19.42 | – |
| HOUHouvegnez | 196.8 | 125 | 12:22:45.06+30.79 s | 12:23:07.20+52.93 s | 22.14 | – |
| KLBKalborn | 220.4 | 130 | 12:22:49.13+34.86 s | 12:23:15.52+61.25 s | 26.39 | – |