JEMELLE (BE)
Quarry blast14 August 2019
- Magnitude
- 1.5ML
- Depth
- –
- Belgian time
- 12:29:192019-08-14
- UTC
- 10:29:192019-08-14
Main parameters
| Date and time | 2019-08-14 10:29:19 UTC 2019-08-14 12:29:19 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.170° N, 5.244° E Uncertainty ± 3.2 km |
| Event ID | ROB 8530 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-08-14 12:48:47 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
- 4
- Epicentral distance
- 2.0 – 73.2km
- Mean velocity, P wave
- 5.5km/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: 4 measurements, root-mean-square deviation 0.32 s. S wave: 4 measurements, root-mean-square deviation 0.37 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)4 stations | ||||||
| RCHRochefort | 2.0 | 216 | 10:29:20.10+0.28 s | 10:29:20.44+0.62 s | 0.34 | – |
| CLAClavier | 28.0 | 9 | 10:29:24.54+4.72 s | 10:29:28.28+8.46 s | 3.74 | – |
| DOUDourbes | 47.1 | 260 | 10:29:28.02+8.20 s | 10:29:34.37+14.55 s | 6.35 | – |
| MEMHMembach | 73.2 | 48 | 10:29:33.57+13.75 s | 10:29:41.16+21.34 s | 7.59 | 12.4 |