ROCHEFORT (BE)
Quarry blast12 November 2019
- Magnitude
- 1.7ML
- Depth
- –
- Belgian time
- 13:26:362019-11-12
- UTC
- 12:26:362019-11-12
Main parameters
| Date and time | 2019-11-12 12:26:36 UTC 2019-11-12 13:26:36 Belgian time |
|---|---|
| Magnitude | ML 1.7 |
| Epicentral coordinates | 50.189° N, 5.237° E Uncertainty ± 0.8 km |
| Event ID | ROB 8860 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-11-13 15:57:09 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
- 3.9 – 69.6km
- 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: 7 measurements, root-mean-square deviation 0.20 s. S wave: 5 measurements, root-mean-square deviation 0.38 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 | |||||
| RCHRochefort | 3.9 | 190 | 12:26:36.97+0.63 s | 12:26:37.73+1.39 s | 0.76 |
| CLAClavier | 26.0 | 10 | 12:26:41.05+4.71 s | 12:26:44.62+8.28 s | 3.57 |
| MRDMaredsous | 35.7 | 291 | 12:26:42.75+6.41 s | 12:26:47.47+11.13 s | 4.72 |
| DOUDourbes | 47.1 | 257 | 12:26:44.55+8.21 s | 12:26:50.59+14.25 s | 6.04 |
| HOUHouvegnez | 57.8 | 71 | 12:26:46.15+9.81 s | 12:26:52.90+16.56 s | 6.75 |
| KLBKalborn | 63.1 | 99 | 12:26:47.61+11.27 s | – | – |
| MRGMont Rigi | 69.6 | 59 | 12:26:48.52+12.18 s | – | – |