ANDENNE (BE)
Quarry blast8 January 2020
- Magnitude
- 2.1ML
- Depth
- –
- Belgian time
- 14:19:442020-01-08
- UTC
- 13:19:442020-01-08
Main parameters
| Date and time | 2020-01-08 13:19:44 UTC 2020-01-08 14:19:44 Belgian time |
|---|---|
| Magnitude | ML 2.1 |
| Epicentral coordinates | 50.483° N, 4.984° E Uncertainty ± 1.7 km |
| Event ID | ROB 9085 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-08 15:08:25 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
- 11
- Epicentral distance
- 13.1 – 77.5km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.2km/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: 11 measurements, root-mean-square deviation 0.49 s. S wave: 6 measurements, root-mean-square deviation 0.56 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)9 stations | |||||
| GESGesves | 13.1 | 146 | 13:19:46.28+2.01 s | 13:19:48.44+4.17 s | 2.16 |
| CLAClavier | 23.7 | 107 | 13:19:48.55+4.28 s | 13:19:51.65+7.38 s | 3.10 |
| MRDMaredsous | 25.3 | 217 | 13:19:48.92+4.65 s | 13:19:51.21+6.94 s | 2.29 |
| RCHRochefort | 40.4 | 155 | 13:19:51.84+7.57 s | 13:19:57.65+13.38 s | 5.81 |
| DOUDourbes | 51.3 | 213 | 13:19:53.88+9.61 s | 13:20:00.61+16.34 s | 6.73 |
| SKQSteenkerque | 66.7 | 286 | 13:19:54.95+10.68 s | 13:20:04.61+20.34 s | 9.66 |
| MEMHMembach | 74.1 | 79 | 13:19:57.10+12.83 s | – | – |
| MEMSMembach | 74.1 | 79 | 13:19:57.21+12.94 s | – | – |
| MRGMont Rigi | 77.5 | 87 | 13:19:57.74+13.47 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| VKBValkenburg | 70.9 | 53 | 13:19:57.23+12.96 s | – | – |
| HGNHeimansgroeve | 74.0 | 65 | 13:19:56.41+12.14 s | – | – |