JEMELLE (BE)
Quarry blast25 April 2017
- Magnitude
- 1.3ML
- Depth
- 2.9km ± 1.1
- Belgian time
- 12:02:252017-04-25
- UTC
- 10:02:252017-04-25
Main parameters
| Date and time | 2017-04-25 10:02:25 UTC 2017-04-25 12:02:25 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.169° N, 5.255° E Uncertainty ± 0.8 km |
| Depth of hypocenter | 2.9 ± 1.1 km |
| Event ID | ROB 5678 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-04-25 12:19:38 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
- 2.5 – 72.7km
- Mean velocity, P wave
- 5.8km/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 2.9 km. P wave: 7 measurements, root-mean-square deviation 0.08 s. S wave: 4 measurements, root-mean-square deviation 0.10 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 | ||||||
| RCHRochefort | 2.5 | 232 | 10:02:26.37+0.53 s | 10:02:27.08+1.24 s | 0.71 | – |
| GESGesves | 26.8 | 334 | 10:02:30.38+4.54 s | 10:02:33.94+8.10 s | 3.56 | – |
| CLAClavier | 28.0 | 7 | 10:02:30.56+4.72 s | 10:02:34.17+8.33 s | 3.61 | 20.0 |
| MRDMaredsous | 37.8 | 293 | 10:02:32.15+6.31 s | – | – | – |
| DOUDourbes | 47.9 | 260 | 10:02:34.05+8.21 s | 10:02:40.13+14.29 s | 6.08 | – |
| KLBKalborn | 61.6 | 97 | 10:02:36.48+10.64 s | – | – | – |
| MEMHMembach | 72.7 | 47 | 10:02:38.39+12.55 s | – | – | – |
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