ROCHEFORT (BE)
Quarry blast2 April 2020
- Magnitude
- 0.6ML
- Depth
- –
- Belgian time
- 12:14:452020-04-02
- UTC
- 10:14:452020-04-02
Main parameters
| Date and time | 2020-04-02 10:14:45 UTC 2020-04-02 12:14:45 Belgian time |
|---|---|
| Magnitude | ML 0.6 |
| Epicentral coordinates | 50.188° N, 5.240° E Uncertainty ± 0.9 km |
| Event ID | ROB 9725 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-04-02 14:38:29 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
- 3.8 – 69.4km
- Mean velocity, P wave
- 5.9km/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: 7 measurements, root-mean-square deviation 0.16 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)7 stations | |||||
| RCHRochefort | 3.8 | 194 | 10:14:46.05+0.67 s | 10:14:46.81+1.43 s | 0.76 |
| GESGesves | 24.4 | 334 | 10:14:50.05+4.67 s | – | – |
| CLAClavier | 26.0 | 10 | 10:14:50.13+4.75 s | 10:14:53.92+8.54 s | 3.79 |
| MRDMaredsous | 36.0 | 291 | 10:14:51.62+6.24 s | – | – |
| DOUDourbes | 47.3 | 258 | 10:14:53.56+8.18 s | 10:14:59.83+14.45 s | 6.27 |
| LCHLa Chartreuse | 56.2 | 27 | 10:14:55.00+9.62 s | – | – |
| MRGMont Rigi | 69.4 | 59 | 10:14:57.42+12.04 s | – | – |
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