EVEGNEE (BE)
Quarry blast16 July 2018
- Magnitude
- 1.1ML
- Depth
- 6.6km ± 3.4
- Belgian time
- 13:35:012018-07-16
- UTC
- 11:35:012018-07-16
Main parameters
| Date and time | 2018-07-16 11:35:01 UTC 2018-07-16 13:35:01 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.649° N, 5.707° E Uncertainty ± 3.5 km |
| Depth of hypocenter | 6.6 ± 3.4 km |
| Event ID | ROB 6980 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-07-18 09:00:08 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
- 6
- Epicentral distance
- 7.7 – 100.2km
- Mean velocity, P wave
- 5.9km/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. Hypocenter at a depth of 6.6 km. P wave: 6 measurements, root-mean-square deviation 0.25 s. S wave: 4 measurements, root-mean-square deviation 0.20 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | ||||||
| LCHLa Chartreuse | 7.7 | 262 | 11:35:03.10+1.71 s | 11:35:04.70+3.31 s | 1.60 | – |
| STISart Tilman | 12.5 | 234 | 11:35:03.23+1.84 s | – | – | – |
| MEMHMembach | 21.9 | 102 | 11:35:05.22+3.83 s | 11:35:08.33+6.94 s | 3.11 | – |
| CLAClavier | 38.4 | 228 | 11:35:07.71+6.32 s | 11:35:12.82+11.43 s | 5.11 | 10.2 |
| HOUHouvegnez | 39.0 | 147 | 11:35:08.33+6.94 s | – | – | – |
| DOUDourbes | 100.2 | 233 | 11:35:18.34+16.95 s | 11:35:31.28+29.89 s | 12.94 | – |
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