FORET (BE)
Quarry blast26 October 2017
- Magnitude
- 1.6ML
- Depth
- 5.7km ± 4.1
- Belgian time
- 11:50:472017-10-26
- UTC
- 09:50:472017-10-26
Main parameters
| Date and time | 2017-10-26 09:50:47 UTC 2017-10-26 11:50:47 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.573° N, 5.710° E Uncertainty ± 1.0 km |
| Depth of hypocenter | 5.7 ± 4.1 km |
| Event ID | ROB 5975 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-10-26 12:40:23 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
- 10
- Epicentral distance
- 10.4 – 59.8km
- Mean velocity, P wave
- 5.6km/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 5.7 km. P wave: 10 measurements, root-mean-square deviation 0.24 s. S wave: 7 measurements, root-mean-square deviation 0.28 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)10 stations | ||||||
| STISart Tilman | 10.4 | 276 | 09:50:49.16+1.22 s | – | – | – |
| LCHLa Chartreuse | 10.7 | 313 | 09:50:49.73+1.79 s | 09:50:51.61+3.67 s | 1.88 | – |
| MEMHMembach | 21.6 | 79 | 09:50:51.58+3.64 s | 09:50:54.64+6.70 s | 3.06 | – |
| EBNEben-Emael | 25.0 | 355 | 09:50:52.43+4.49 s | 09:50:56.16+8.22 s | 3.73 | – |
| MRGMont Rigi | 26.8 | 105 | 09:50:52.37+4.43 s | 09:50:55.98+8.04 s | 3.61 | – |
| HOUHouvegnez | 32.1 | 139 | 09:50:53.53+5.59 s | 09:50:57.81+9.87 s | 4.28 | – |
| CLAClavier | 33.7 | 240 | 09:50:53.32+5.38 s | 09:50:58.32+10.38 s | 5.00 | 31.5 |
| GESGesves | 48.9 | 245 | 09:50:56.55+8.61 s | 09:51:02.56+14.62 s | 6.01 | – |
| RCHRochefort | 57.8 | 217 | 09:50:57.93+9.99 s | – | – | – |
| KLBKalborn | 59.8 | 152 | 09:50:58.32+10.38 s | – | – | – |
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