ANDENNE (BE)
Quarry blast25 January 2019
- Magnitude
- 1.8ML
- Depth
- –
- Belgian time
- 14:21:082019-01-25
- UTC
- 13:21:082019-01-25
Main parameters
| Date and time | 2019-01-25 13:21:08 UTC 2019-01-25 14:21:08 Belgian time |
|---|---|
| Magnitude | ML 1.8 |
| Epicentral coordinates | 50.469° N, 5.030° E Uncertainty ± 3.3 km |
| Event ID | ROB 7720 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-01-25 14:44:56 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
- 14
- Epicentral distance
- 10.2 – 102.6km
- Mean velocity, P wave
- 5.6km/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: 14 measurements, root-mean-square deviation 0.30 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)12 stations | |||||
| GESGesves | 10.2 | 157 | 13:21:10.39+1.64 s | – | – |
| CLAClavier | 20.1 | 106 | 13:21:12.35+3.60 s | – | – |
| MRDMaredsous | 26.3 | 225 | 13:21:12.90+4.15 s | 13:21:16.48+7.73 s | 3.58 |
| RCHRochefort | 37.6 | 158 | 13:21:15.24+6.49 s | – | – |
| DOUDourbes | 51.9 | 217 | 13:21:17.42+8.67 s | – | – |
| MEMSMembach | 71.2 | 77 | 13:21:21.11+12.36 s | – | – |
| MEMHMembach | 71.2 | 77 | 13:21:21.11+12.36 s | – | – |
| MRGMont Rigi | 74.3 | 86 | 13:21:21.69+12.94 s | – | – |
| MOLSMol | 82.9 | 3 | 13:21:23.65+14.90 s | – | – |
| OPTBOpitter | 83.3 | 31 | 13:21:23.78+15.03 s | – | – |
| KLBKalborn | 87.2 | 118 | 13:21:24.22+15.47 s | – | – |
| VIAVianden | 102.6 | 125 | 13:21:26.63+17.88 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 71.8 | 62 | 13:21:20.53+11.78 s | – | – |
| VITO (Mol)1 station | |||||
| MOL2AMol | 83* | – | 13:21:23.15+14.40 s | – | – |
* Distance from the catalogue, rounded to the kilometre: the coordinates of the station are missing from it.