KLEMSKERKE (BE)
Controlled explosion24 July 2018
- Magnitude
- 1.2ML
- Depth
- 6.2km ± 4.7
- Belgian time
- 17:15:472018-07-24
- UTC
- 15:15:472018-07-24
Main parameters
| Date and time | 2018-07-24 15:15:47 UTC 2018-07-24 17:15:47 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 51.276° N, 3.002° E Uncertainty ± 9.4 km |
| Depth of hypocenter | 6.2 ± 4.7 km |
| Event ID | ROB 7025 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-25 09:57:04 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
- 6.1 – 235.2km
- 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. Hypocenter at a depth of 6.2 km. P wave: 4 measurements, root-mean-square deviation 0.54 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)9 stations | ||||||
| OSTBOostende | 6.1 | 226 | 15:15:49.27+1.93 s | – | – | – |
| SKQSteenkerque | 103.0 | 132 | 15:16:04.40+17.06 s | 15:16:16.35+29.01 s | 11.95 | – |
| RQRRonquières | 113.8 | 130 | 15:16:06.25+18.91 s | – | – | – |
| BOUBougnies | 119.0 | 146 | 15:16:08.39+21.05 s | – | – | – |
| MRDMaredsous | 165.1 | 130 | 15:16:14.47+27.13 s | – | – | – |
| DOUDourbes | 173.0 | 139 | 15:16:15.87+28.53 s | 15:16:38.13+50.79 s | 22.26 | – |
| GESGesves | 177.2 | 123 | 15:16:15.04+27.70 s | – | – | – |
| CLAClavier | 188.0 | 120 | 15:16:16.39+29.05 s | 15:16:38.95+51.61 s | 22.56 | 2.2 |
| HOUHouvegnez | 235.2 | 115 | 15:16:21.24+33.90 s | – | – | – |