COMBLAIN-AU-PONT (BE)
Quarry blast6 September 2019
- Magnitude
- 0.9ML
- Depth
- –
- Belgian time
- 14:00:292019-09-06
- UTC
- 12:00:292019-09-06
Main parameters
| Date and time | 2019-09-06 12:00:29 UTC 2019-09-06 14:00:29 Belgian time |
|---|---|
| Magnitude | ML 0.9 |
| Epicentral coordinates | 50.486° N, 5.622° E Uncertainty ± 0.8 km |
| Event ID | ROB 8625 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-09-06 14:08:39 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
- 10
- Epicentral distance
- 17.1 – 55.2km
- Mean velocity, P wave
- 5.6km/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: 10 measurements, root-mean-square deviation 0.22 s. S wave: 5 measurements, root-mean-square deviation 0.43 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)9 stations | |||||
| LCHLa Chartreuse | 17.1 | 355 | 12:00:32.35+3.21 s | – | – |
| CLAClavier | 23.9 | 252 | 12:00:33.02+3.88 s | 12:00:36.30+7.16 s | 3.28 |
| MEMHMembach | 30.8 | 63 | 12:00:34.49+5.35 s | 12:00:39.03+9.89 s | 4.54 |
| HOUHouvegnez | 30.9 | 118 | 12:00:34.77+5.63 s | – | – |
| MRGMont Rigi | 32.3 | 85 | 12:00:34.51+5.37 s | 12:00:39.11+9.97 s | 4.60 |
| EBNEben-Emael | 34.9 | 7 | 12:00:35.50+6.36 s | – | – |
| GESGesves | 39.6 | 254 | 12:00:36.22+7.08 s | 12:00:41.89+12.75 s | 5.67 |
| RCHRochefort | 46.3 | 218 | 12:00:37.65+8.51 s | – | – |
| KLBKalborn | 55.2 | 141 | 12:00:39.19+10.05 s | 12:00:45.51+16.37 s | 6.32 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 38.0 | 35 | 12:00:35.86+6.72 s | – | – |