VEZIN (BE)
Quarry blast5 August 2019
- Magnitude
- 1.1ML
- Depth
- 5.0km ± 6.7
- Belgian time
- 13:51:192019-08-05
- UTC
- 11:51:192019-08-05
Main parameters
| Date and time | 2019-08-05 11:51:19 UTC 2019-08-05 13:51:19 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.490° N, 5.000° E Uncertainty ± 2.8 km |
| Depth of hypocenter | 5.0 ± 6.7 km |
| Event ID | ROB 8445 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-05 14:13:11 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
- 13.3 – 123.4km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.3km/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 5.0 km. P wave: 8 measurements, root-mean-square deviation 0.73 s. S wave: 4 measurements, root-mean-square deviation 0.30 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 | ||||||
| GESGesves | 13.3 | 152 | 11:51:21.65+2.02 s | 11:51:23.71+4.08 s | 2.06 | 24.3 |
| MRDMaredsous | 26.7 | 218 | 11:51:24.02+4.39 s | 11:51:28.16+8.53 s | 4.14 | – |
| RCHRochefort | 40.7 | 157 | 11:51:26.72+7.09 s | – | – | – |
| DOUDourbes | 52.6 | 213 | 11:51:28.51+8.88 s | 11:51:35.21+15.58 s | 6.70 | – |
| SKQSteenkerque | 67.5 | 285 | 11:51:29.18+9.55 s | – | – | – |
| MEMHMembach | 72.8 | 79 | 11:51:32.28+12.65 s | – | – | – |
| HOUHouvegnez | 73.0 | 102 | 11:51:31.87+12.24 s | 11:51:41.31+21.68 s | 9.44 | – |
| KLBKalborn | 90.2 | 118 | 11:51:35.68+16.05 s | – | – | – |
| WLFWalferdange | 123.4 | 138 | 11:51:40.06+20.43 s | – | – | – |