JEMELLE (BE)
Quarry blast22 August 2017
- Magnitude
- 1.6ML
- Depth
- 3.3km ± 7.9
- Belgian time
- 12:05:242017-08-22
- UTC
- 10:05:242017-08-22
Main parameters
| Date and time | 2017-08-22 10:05:24 UTC 2017-08-22 12:05:24 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.172° N, 5.251° E Uncertainty ± 1.6 km |
| Depth of hypocenter | 3.3 ± 7.9 km |
| Event ID | ROB 5860 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-08-22 12:37:36 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
- 26.5 – 118.7km
- Mean velocity, P wave
- 5.6km/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 3.3 km. P wave: 7 measurements, root-mean-square deviation 0.21 s. S wave: 4 measurements, root-mean-square deviation 0.25 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 | ||||||
| GESGesves | 26.5 | 334 | 10:05:29.20+4.30 s | – | – | – |
| CLAClavier | 27.8 | 8 | 10:05:29.24+4.34 s | 10:05:33.39+8.49 s | 4.15 | 37.7 |
| MRDMaredsous | 37.4 | 293 | 10:05:30.96+6.06 s | 10:05:36.17+11.27 s | 5.21 | – |
| DOUDourbes | 47.7 | 260 | 10:05:33.16+8.26 s | 10:05:39.17+14.27 s | 6.01 | – |
| KLBKalborn | 61.9 | 97 | 10:05:35.20+10.30 s | 10:05:43.14+18.24 s | 7.94 | – |
| SKQSteenkerque | 98.7 | 303 | 10:05:42.33+17.43 s | – | – | – |
| DSLBDessel | 118.7 | 354 | 10:05:45.44+20.54 s | – | – | – |
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