VILLERS-SAINTE-GERTRUDE (BE)
Quarry blast7 August 2019
- Magnitude
- 0.7ML
- Depth
- 3.7km ± 7.3
- Belgian time
- 14:18:582019-08-07
- UTC
- 12:18:582019-08-07
Main parameters
| Date and time | 2019-08-07 12:18:58 UTC 2019-08-07 14:18:58 Belgian time |
|---|---|
| Magnitude | ML 0.7 |
| Epicentral coordinates | 50.367° N, 5.566° E Uncertainty ± 1.2 km |
| Depth of hypocenter | 3.7 ± 7.3 km |
| Event ID | ROB 8475 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-09 09:48:41 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
- 10
- Epicentral distance
- 19.6 – 88.8km
- Mean velocity, P wave
- 5.7km/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 3.7 km. P wave: 10 measurements, root-mean-square deviation 0.23 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)10 stations | ||||||
| CLAClavier | 19.6 | 287 | 12:19:01.17+2.93 s | 12:19:04.28+6.04 s | 3.11 | 6.0 |
| HOUHouvegnez | 31.3 | 93 | 12:19:03.61+5.37 s | – | – | – |
| RCHRochefort | 33.8 | 226 | 12:19:04.57+6.33 s | 12:19:08.05+9.81 s | 3.48 | – |
| GESGesves | 34.2 | 273 | 12:19:03.97+5.73 s | – | – | – |
| MRGMont Rigi | 39.5 | 66 | 12:19:05.08+6.84 s | – | – | – |
| MEMHMembach | 41.4 | 49 | 12:19:05.38+7.14 s | – | – | – |
| TNLTernell | 46.8 | 59 | 12:19:06.46+8.22 s | – | – | – |
| KLBKalborn | 48.8 | 127 | 12:19:06.56+8.32 s | – | – | – |
| DOUDourbes | 75.6 | 247 | 12:19:11.34+13.10 s | – | – | – |
| WLFWalferdange | 88.8 | 152 | 12:19:13.46+15.22 s | – | – | – |
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