BIRRESBORN (DE)
Quarry blast26 March 2019
- Magnitude
- 2.0ML
- Depth
- –
- Belgian time
- 09:49:052019-03-26
- UTC
- 08:49:052019-03-26
Main parameters
| Date and time | 2019-03-26 08:49:05 UTC 2019-03-26 09:49:05 Belgian time |
|---|---|
| Magnitude | ML 2.0 |
| Epicentral coordinates | 50.194° N, 6.611° E Uncertainty ± 2.1 km |
| Event ID | ROB 7995 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-03-26 10:04:07 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
- 6
- Epicentral distance
- 37.4 – 144.5km
- Mean velocity, P wave
- 5.2km/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: 5 measurements, root-mean-square deviation 0.10 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)6 stations | |||||
| KLBKalborn | 37.4 | 254 | 08:49:11.43+6.38 s | – | – |
| VIAVianden | 41.1 | 226 | 08:49:11.86+6.81 s | 08:49:17.28+12.23 s | 5.42 |
| HOUHouvegnez | 46.7 | 293 | 08:49:12.97+7.92 s | 08:49:18.51+13.46 s | 5.54 |
| MEMSMembach | 62.9 | 317 | 08:49:16.18+11.13 s | – | – |
| MEMHMembach | 62.9 | 317 | 08:49:16.20+11.15 s | – | – |
| DOUDourbes | 144.5 | 266 | 08:49:29.88+24.83 s | – | – |