FORET (BE)
Quarry blast19 May 2017
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 14:01:122017-05-19
- UTC
- 12:01:122017-05-19
Main parameters
| Date and time | 2017-05-19 12:01:12 UTC 2017-05-19 14:01:12 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.576° N, 5.710° E Uncertainty ± 2.0 km |
| Event ID | ROB 5720 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-05-19 16:07:42 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
- 4
- Epicentral distance
- 10.5 – 33.8km
- Mean velocity, P wave
- 6.2km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 4 measurements, root-mean-square deviation 0.07 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)4 stations | ||||||
| LCHLa Chartreuse | 10.5 | 312 | 12:01:14.85+2.06 s | – | – | – |
| MEMSMembach | 21.5 | 80 | 12:01:16.49+3.70 s | 12:01:19.83+7.04 s | 3.34 | – |
| MRGMont Rigi | 26.9 | 106 | 12:01:17.53+4.74 s | 12:01:20.83+8.04 s | 3.30 | – |
| CLAClavier | 33.8 | 239 | 12:01:18.61+5.82 s | 12:01:23.38+10.59 s | 4.77 | 14.5 |
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