CHANLY (BE)
Quarry blast18 July 2019
- Magnitude
- 1.1ML
- Depth
- 1.7km ± 5.0
- Belgian time
- 18:29:542019-07-18
- UTC
- 16:29:542019-07-18
Main parameters
| Date and time | 2019-07-18 16:29:54 UTC 2019-07-18 18:29:54 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.068° N, 5.151° E Uncertainty ± 2.1 km |
| Depth of hypocenter | 1.7 ± 5.0 km |
| Event ID | ROB 8405 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-19 08:09:58 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
- 13
- Epicentral distance
- 11.1 – 100.0km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.5km/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 1.7 km. P wave: 13 measurements, root-mean-square deviation 0.58 s. S wave: 7 measurements, root-mean-square deviation 0.77 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)13 stations | ||||||
| RCHRochefort | 11.1 | 29 | 16:29:56.23+1.60 s | 16:29:57.61+2.98 s | 1.38 | – |
| GESGesves | 35.6 | 353 | 16:30:00.75+6.12 s | 16:30:05.25+10.62 s | 4.50 | – |
| MRDMaredsous | 37.8 | 314 | 16:30:00.39+5.76 s | 16:30:06.12+11.49 s | 5.73 | 17.1 |
| DOUDourbes | 39.9 | 275 | 16:30:01.54+6.91 s | 16:30:06.82+12.19 s | 5.28 | – |
| CLAClavier | 40.5 | 15 | 16:30:01.51+6.88 s | 16:30:06.50+11.87 s | 4.99 | 5.5 |
| KLBKalborn | 68.6 | 87 | 16:30:05.01+10.38 s | 16:30:14.97+20.34 s | 9.96 | – |
| HOUHouvegnez | 68.8 | 62 | 16:30:06.13+11.50 s | – | – | – |
| MRGMont Rigi | 82.2 | 53 | 16:30:08.72+14.09 s | – | – | – |
| MEMHMembach | 85.8 | 45 | 16:30:09.89+15.26 s | – | – | – |
| RQRRonquières | 89.1 | 313 | 16:30:10.78+16.15 s | – | – | – |
| EBNEben-Emael | 89.3 | 25 | 16:30:10.52+15.89 s | – | – | – |
| TNLTernell | 90.4 | 50 | 16:30:10.57+15.94 s | – | – | – |
| SKQSteenkerque | 100.0 | 311 | 16:30:11.80+17.17 s | 16:30:21.62+26.99 s | 9.82 | – |
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