ROCHEFORT (BE)
Quarry blast5 July 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 12:02:412019-07-05
- UTC
- 10:02:412019-07-05
Main parameters
| Date and time | 2019-07-05 10:02:41 UTC 2019-07-05 12:02:41 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.170° N, 5.248° E Uncertainty ± 1.0 km |
| Event ID | ROB 8325 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-05 12:13:56 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
- 26.5 – 82.0km
- Mean velocity, P wave
- 5.9km/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: 6 measurements, root-mean-square deviation 0.35 s. S wave: 4 measurements, root-mean-square deviation 0.05 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)5 stations | |||||
| GESGesves | 26.5 | 334 | 10:02:46.76+4.86 s | 10:02:50.12+8.22 s | 3.36 |
| CLAClavier | 27.9 | 8 | 10:02:47.06+5.16 s | 10:02:50.66+8.76 s | 3.60 |
| DOUDourbes | 47.4 | 260 | 10:02:50.35+8.45 s | 10:02:56.36+14.46 s | 6.01 |
| LCHLa Chartreuse | 57.8 | 25 | 10:02:52.20+10.30 s | – | – |
| KLBKalborn | 62.0 | 97 | 10:02:51.98+10.08 s | 10:03:00.71+18.81 s | 8.73 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 82.0 | 36 | 10:02:56.45+14.55 s | – | – |