POULSEUR (BE)
Quarry blast21 February 2017
- Magnitude
- 1.0ML
- Depth
- 10.2km ± 8.7
- Belgian time
- 15:59:082017-02-21
- UTC
- 14:59:082017-02-21
Main parameters
| Date and time | 2017-02-21 14:59:08 UTC 2017-02-21 15:59:08 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.520° N, 5.587° E Uncertainty ± 3.1 km |
| Depth of hypocenter | 10.2 ± 8.7 km |
| Event ID | ROB 5636 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-02-22 07:26:19 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
- 6
- Epicentral distance
- 7.2 – 38.5km
- Mean velocity, P wave
- 6.4km/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 10.2 km. P wave: 6 measurements, root-mean-square deviation 0.21 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)6 stations | |||||
| STISart Tilman | 7.2 | 347 | 14:59:10.13+1.92 s | – | – |
| LCHLa Chartreuse | 13.3 | 4 | 14:59:11.35+3.14 s | – | – |
| CLAClavier | 23.1 | 241 | 14:59:12.20+3.99 s | – | – |
| MEMHMembach | 31.6 | 71 | 14:59:13.45+5.24 s | 14:59:18.37+10.16 s | 4.92 |
| HOUHouvegnez | 35.0 | 122 | 14:59:14.29+6.08 s | 14:59:18.70+10.49 s | 4.41 |
| GESGesves | 38.5 | 247 | 14:59:14.51+6.30 s | 14:59:20.98+12.77 s | 6.47 |
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