BREINIG (DE)
Quarry blast22 January 2020
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 12:35:492020-01-22
- UTC
- 11:35:492020-01-22
Main parameters
| Date and time | 2020-01-22 11:35:49 UTC 2020-01-22 12:35:49 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.735° N, 6.212° E Uncertainty ± 4.2 km |
| Event ID | ROB 9170 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-01-23 09:48:57 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
- 9
- Epicentral distance
- 20.0 – 113.1km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.4km/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: 9 measurements, root-mean-square deviation 0.50 s. S wave: 5 measurements, root-mean-square deviation 0.38 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)8 stations | |||||
| MEMHMembach | 20.0 | 226 | 11:35:53.22+3.87 s | 11:35:55.90+6.55 s | 2.68 |
| MEMSMembach | 20.0 | 226 | 11:35:53.37+4.02 s | – | – |
| MRGMont Rigi | 26.7 | 201 | 11:35:54.44+5.09 s | 11:35:57.91+8.56 s | 3.47 |
| EBNEben-Emael | 38.3 | 281 | 11:35:55.47+6.12 s | – | – |
| LCHLa Chartreuse | 44.6 | 256 | 11:35:56.86+7.51 s | – | – |
| HOUHouvegnez | 44.8 | 199 | 11:35:57.21+7.86 s | – | – |
| KLBKalborn | 71.0 | 186 | 11:36:01.91+12.56 s | 11:36:10.06+20.71 s | 8.15 |
| MRDMaredsous | 113.1 | 245 | 11:36:10.57+21.22 s | 11:36:22.83+33.48 s | 12.26 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 20.0 | 279 | 11:35:53.27+3.92 s | 11:35:55.80+6.45 s | 2.53 |