AVE-ET-AUFFE (BE)
Quarry blast20 November 2008
- Magnitude
- 1.1ML
- Depth
- 2.3km ± 5.5
- Belgian time
- 16:46:432008-11-20
- UTC
- 15:46:432008-11-20
Main parameters
| Date and time | 2008-11-20 15:46:43 UTC 2008-11-20 16:46:43 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.093° N, 5.143° E Uncertainty ± 1.5 km |
| Depth of hypocenter | 2.3 ± 5.5 km |
| Event ID | ROB 3934 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-11-25 13:54:16 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
- 9.1 – 39.2km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.3km/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 2.3 km. P wave: 4 measurements, root-mean-square deviation 0.10 s. S wave: 4 measurements, root-mean-square deviation 0.06 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 | ||||||
| RCHRochefort | 9.1 | 41 | 15:46:44.93+1.61 s | 15:46:45.90+2.58 s | 0.97 | – |
| GESGesves | 32.7 | 353 | 15:46:49.06+5.74 s | 15:46:53.11+9.79 s | 4.05 | 5.2 |
| CLAClavier | 38.0 | 17 | 15:46:49.96+6.64 s | 15:46:54.66+11.34 s | 4.70 | 19.4 |
| DOUDourbes | 39.2 | 271 | 15:46:49.97+6.65 s | 15:46:55.09+11.77 s | 5.12 | 11.6 |
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