CONSTHUM (LU)
Quarry blast18 July 2017
- Magnitude
- 1.5ML
- Depth
- 1.4km ± 4.5
- Belgian time
- 15:51:302017-07-18
- UTC
- 13:51:302017-07-18
Main parameters
| Date and time | 2017-07-18 13:51:30 UTC 2017-07-18 15:51:30 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 49.980° N, 6.019° E Uncertainty ± 1.8 km |
| Depth of hypocenter | 1.4 ± 4.5 km |
| Event ID | ROB 5785 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-07-19 06:41:42 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
- 14.1 – 70.7km
- Mean velocity, P wave
- 5.6km/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 1.4 km. P wave: 7 measurements, root-mean-square deviation 0.24 s. S wave: 6 measurements, root-mean-square deviation 0.52 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 | 14.1 | 111 | 13:51:32.14+2.07 s | 13:51:34.06+3.99 s | 1.92 | – |
| KLBKalborn | 14.8 | 26 | 13:51:32.56+2.49 s | 13:51:34.69+4.62 s | 2.13 | – |
| WLFWalferdange | 36.4 | 165 | 13:51:36.48+6.41 s | 13:51:41.08+11.01 s | 4.60 | – |
| HOUHouvegnez | 41.6 | 359 | 13:51:37.30+7.23 s | 13:51:42.28+12.21 s | 4.98 | 21.5 |
| MRGMont Rigi | 59.2 | 4 | 13:51:40.29+10.22 s | – | – | – |
| MEMHMembach | 69.9 | 359 | 13:51:42.23+12.16 s | 13:51:51.22+21.15 s | 8.99 | – |
| CLAClavier | 70.7 | 314 | 13:51:42.97+12.90 s | 13:51:49.82+19.75 s | 6.85 | – |
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