BIRRESBORN (DE)
Quarry blast13 June 2019
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 10:02:172019-06-13
- UTC
- 08:02:172019-06-13
Main parameters
| Date and time | 2019-06-13 08:02:17 UTC 2019-06-13 10:02:17 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.194° N, 6.627° E Uncertainty ± 2.0 km |
| Event ID | ROB 8245 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-06-13 14:28:30 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
- 13
- Epicentral distance
- 38.5 – 187.9km
- 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: 8 measurements, root-mean-square deviation 0.12 s. S wave: 6 measurements, root-mean-square deviation 0.55 s.
Stations farther than 120 km are left out of the fit: the first waves to reach them have travelled beneath the crust, through the mantle, where they propagate faster.
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 | |||||
| KLBKalborn | 38.5 | 254 | 08:02:23.01+5.96 s | 08:02:28.05+11.00 s | 5.04 |
| VIAVianden | 41.9 | 227 | 08:02:23.56+6.51 s | 08:02:29.69+12.64 s | 6.13 |
| MRGMont Rigi | 52.8 | 312 | 08:02:25.32+8.27 s | 08:02:33.23+16.18 s | 7.91 |
| MEMSMembach | 63.7 | 317 | 08:02:27.34+10.29 s | – | – |
| MEMHMembach | 63.7 | 317 | 08:02:27.38+10.33 s | 08:02:36.24+19.19 s | 8.86 |
| CLAClavier | 97.6 | 285 | 08:02:32.94+15.89 s | – | – |
| GESGesves | 111.8 | 282 | 08:02:35.29+18.24 s | 08:02:52.21+35.16 s | 16.92 |
| OPTBOpitter | 123.8 | 326 | 08:02:37.76+20.71 s | – | – |
| MRDMaredsous | 133.1 | 276 | 08:02:38.94+21.89 s | 08:02:55.89+38.84 s | 16.95 |
| DOUDourbes | 145.7 | 266 | 08:02:40.63+23.58 s | 08:02:59.18+42.13 s | 18.55 |
| RQRRonquières | 176.8 | 286 | 08:02:45.53+28.48 s | – | – |
| SKQSteenkerque | 187.9 | 287 | 08:02:47.02+29.97 s | – | – |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 80.3 | 322 | 08:02:30.07+13.02 s | 08:02:40.58+23.53 s | 10.51 |