ANHEE (BE)
Quarry blast19 March 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 15:06:222020-03-19
- UTC
- 14:06:222020-03-19
Main parameters
| Date and time | 2020-03-19 14:06:22 UTC 2020-03-19 15:06:22 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.316° N, 4.867° E Uncertainty ± 3.0 km |
| Event ID | ROB 9540 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-19 15:33:42 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
- 8
- Epicentral distance
- 7.2 – 90.5km
- 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. Depth not determined: hypocenter placed at the surface for the calculation. P wave: 8 measurements, root-mean-square deviation 0.34 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 | |||||
| MRDMaredsous | 7.2 | 258 | 14:06:23.30+1.20 s | 14:06:24.42+2.32 s | 1.12 |
| GESGesves | 17.5 | 64 | 14:06:24.62+2.52 s | 14:06:27.31+5.21 s | 2.69 |
| DOUDourbes | 31.3 | 218 | 14:06:28.08+5.98 s | – | – |
| RCHRochefort | 31.3 | 125 | 14:06:27.78+5.68 s | 14:06:31.80+9.70 s | 4.02 |
| CLAClavier | 33.0 | 69 | 14:06:28.11+6.01 s | – | – |
| MEMSMembach | 87.5 | 68 | 14:06:36.99+14.89 s | – | – |
| MRGMont Rigi | 88.6 | 75 | 14:06:37.86+15.76 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 90.5 | 56 | 14:06:38.26+16.16 s | – | – |
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