CONSTHUM (LU)
Quarry blast7 May 2018
- Magnitude
- 1.1ML
- Depth
- 3.6km ± 4.7
- Belgian time
- 17:35:552018-05-07
- UTC
- 15:35:552018-05-07
Main parameters
| Date and time | 2018-05-07 15:35:55 UTC 2018-05-07 17:35:55 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 49.983° N, 6.050° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 3.6 ± 4.7 km |
| Event ID | ROB 6575 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2018-05-08 07:21:46 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
- 7
- Epicentral distance
- 12.1 – 105.0km
- Mean velocity, P wave
- 6.2km/s
- Mean velocity, S wave
- 3.5km/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 3.6 km. P wave: 7 measurements, root-mean-square deviation 0.51 s. S wave: 4 measurements, root-mean-square deviation 0.14 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)7 stations | ||||||
| VIAVianden | 12.1 | 116 | 15:35:57.93+2.01 s | 15:35:59.81+3.89 s | 1.88 | – |
| KLBKalborn | 13.7 | 18 | 15:35:58.34+2.42 s | 15:36:00.18+4.26 s | 1.84 | 25.6 |
| WLFWalferdange | 36.2 | 168 | 15:36:02.24+6.32 s | 15:36:06.82+10.90 s | 4.58 | – |
| HOUHouvegnez | 41.4 | 356 | 15:36:03.11+7.19 s | 15:36:07.92+12.00 s | 4.81 | – |
| MEMHMembach | 69.7 | 358 | 15:36:08.01+12.09 s | – | – | – |
| GESGesves | 82.1 | 303 | 15:36:10.22+14.30 s | – | – | – |
| DOUDourbes | 105.0 | 277 | 15:36:12.27+16.35 s | – | – | – |
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