FLORENNES (BE)
Quarry blast26 May 2020
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 10:31:352020-05-26
- UTC
- 08:31:352020-05-26
Main parameters
| Date and time | 2020-05-26 08:31:35 UTC 2020-05-26 10:31:35 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.261° N, 4.593° E Uncertainty ± 0.9 km |
| Event ID | ROB 10100 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-26 11:13:25 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
- 13.3 – 56.5km
- 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: 5 measurements, root-mean-square deviation 0.24 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 | 13.3 | 70 | 08:31:37.86+2.57 s | 08:31:39.34+4.05 s | 1.48 |
| DOUDourbes | 18.4 | 179 | 08:31:38.82+3.53 s | 08:31:41.41+6.12 s | 2.59 |
| GESGesves | 37.8 | 68 | 08:31:42.61+7.32 s | – | – |
| RCHRochefort | 46.8 | 104 | 08:31:43.71+8.42 s | 08:31:49.46+14.17 s | 5.75 |
| SKQSteenkerque | 56.5 | 320 | 08:31:45.06+9.77 s | – | – |
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