WAIMES (BE)
Quarry blast25 October 2017
- Magnitude
- 0.9ML
- Depth
- 6.0km ± 6.7
- Belgian time
- 18:27:582017-10-25
- UTC
- 16:27:582017-10-25
Main parameters
| Date and time | 2017-10-25 16:27:58 UTC 2017-10-25 18:27:58 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.418° N, 6.083° E Uncertainty ± 2.2 km |
| Depth of hypocenter | 6.0 ± 6.7 km |
| Event ID | ROB 5970 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-10-26 07:19:44 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
- 9.1 – 112.1km
- Mean velocity, P wave
- 5.9km/s
- Mean velocity, S wave
- 3.2km/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 6.0 km. P wave: 7 measurements, root-mean-square deviation 0.49 s. S wave: 4 measurements, root-mean-square deviation 0.09 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 | ||||||
| HOUHouvegnez | 9.1 | 218 | 16:28:00.52+1.73 s | – | – | – |
| MRGMont Rigi | 10.3 | 357 | 16:28:00.45+1.66 s | – | – | – |
| TNLTernell | 18.9 | 10 | 16:28:02.14+3.35 s | 16:28:04.64+5.85 s | 2.50 | – |
| MEMHMembach | 21.8 | 346 | 16:28:02.68+3.89 s | 16:28:05.67+6.88 s | 2.99 | – |
| KLBKalborn | 35.5 | 177 | 16:28:05.20+6.41 s | 16:28:09.61+10.82 s | 4.41 | 6.0 |
| CLAClavier | 55.5 | 270 | 16:28:06.95+8.16 s | 16:28:15.95+17.16 s | 9.00 | – |
| DOUDourbes | 112.1 | 252 | 16:28:17.88+19.09 s | – | – | – |
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