Rockeskyll (DE)
Quarry blast3 March 2021
- Magnitude
- 1.6ML
- Depth
- –
- Belgian time
- 10:08:552021-03-03
- UTC
- 09:08:552021-03-03
Main parameters
| Date and time | 2021-03-03 09:08:55 UTC 2021-03-03 10:08:55 Belgian time |
|---|---|
| Magnitude | ML 1.6 |
| Epicentral coordinates | 50.255° N, 6.694° E Uncertainty ± 3.8 km |
| Event ID | ROB 12645 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2021-03-03 16:11:19 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
- 7
- Epicentral distance
- 45.2 – 78.3km
- Mean velocity, P wave
- 5.8km/s
- Mean velocity, S wave
- 3.3km/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: 7 measurements, root-mean-square deviation 0.19 s. S wave: 6 measurements, root-mean-square deviation 0.65 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)6 stations | |||||
| KLBKalborn | 45.2 | 248 | 09:09:03.81+7.89 s | 09:09:09.86+13.94 s | 6.05 |
| VIAVianden | 50.1 | 225 | 09:09:04.69+8.77 s | 09:09:11.22+15.30 s | 6.53 |
| HOUHouvegnez | 50.3 | 283 | 09:09:04.41+8.49 s | 09:09:10.15+14.23 s | 5.74 |
| MRGMont Rigi | 52.4 | 303 | 09:09:04.83+8.91 s | 09:09:12.96+17.04 s | 8.13 |
| MEMHMembach | 62.5 | 309 | 09:09:07.00+11.08 s | 09:09:14.96+19.04 s | 7.96 |
| MEMSMembach | 62.5 | 309 | 09:09:07.01+11.09 s | 09:09:14.55+18.63 s | 7.54 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 78.3 | 317 | 09:09:09.34+13.42 s | – | – |