DOCKWEILER (DE)
Quarry blast4 July 2019
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 10:27:562019-07-04
- UTC
- 08:27:562019-07-04
Main parameters
| Date and time | 2019-07-04 08:27:56 UTC 2019-07-04 10:27:56 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.238° N, 6.772° E Uncertainty ± 5.9 km |
| Event ID | ROB 8315 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-04 12:13:18 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
- 49.8 – 106.6km
- Mean velocity, P wave
- 4.9km/s
- Mean velocity, S wave
- 3.1km/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 0.70 s. S wave: 4 measurements, root-mean-square deviation 0.77 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 | |||||
| KLBKalborn | 49.8 | 252 | 08:28:04.24+8.10 s | 08:28:10.09+13.95 s | 5.85 |
| VIAVianden | 52.9 | 231 | 08:28:04.96+8.82 s | 08:28:11.58+15.44 s | 6.62 |
| MRGMont Rigi | 58.2 | 302 | 08:28:05.04+8.90 s | 08:28:13.23+17.09 s | 8.19 |
| MEMHMembach | 68.1 | 308 | 08:28:07.37+11.23 s | 08:28:14.60+18.46 s | 7.23 |
| LCHLa Chartreuse | 94.6 | 299 | 08:28:14.36+18.22 s | – | – |
| EBNEben-Emael | 99.5 | 309 | 08:28:14.55+18.41 s | – | – |
| CLAClavier | 106.6 | 281 | 08:28:15.66+19.52 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 83.6 | 315 | 08:28:09.66+13.52 s | – | – |