YVOIR (BE)
Quarry blast16 July 2020
- Magnitude
- 1.1ML
- Depth
- –
- Belgian time
- 09:31:132020-07-16
- UTC
- 07:31:132020-07-16
Main parameters
| Date and time | 2020-07-16 07:31:13 UTC 2020-07-16 09:31:13 Belgian time |
|---|---|
| Magnitude | ML 1.1 |
| Epicentral coordinates | 50.289° N, 4.899° E Uncertainty ± 0.2 km |
| Event ID | ROB 10490 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-07-16 14:22:56 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
- 5
- Epicentral distance
- 9.4 – 32.1km
- Mean velocity, P wave
- 5.8km/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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 5 measurements, root-mean-square deviation 0.02 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)5 stations | |||||
| MRDMaredsous | 9.4 | 279 | 07:31:15.20+1.89 s | – | – |
| GESGesves | 17.1 | 51 | 07:31:16.55+3.24 s | – | – |
| RCHRochefort | 27.8 | 122 | 07:31:18.33+5.02 s | – | – |
| DOUDourbes | 30.6 | 225 | 07:31:18.85+5.54 s | – | – |
| CLAClavier | 32.1 | 63 | 07:31:19.11+5.80 s | – | – |
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