OLNE (BE)
Quarry blast11 July 2019
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 13:34:582019-07-11
- UTC
- 11:34:582019-07-11
Main parameters
| Date and time | 2019-07-11 11:34:58 UTC 2019-07-11 13:34:58 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.598° N, 5.699° E Uncertainty ± 1.2 km |
| Event ID | ROB 8365 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2019-07-11 13:49:21 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
- 8.4 – 49.5km
- Mean velocity, P wave
- 5.2km/s
- Mean velocity, S wave
- 3.1km/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 0.39 s. S wave: 7 measurements, root-mean-square deviation 0.49 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)8 stations | |||||
| LCHLa Chartreuse | 8.4 | 303 | 11:34:59.97+1.57 s | – | – |
| MEMHMembach | 22.0 | 87 | 11:35:01.89+3.49 s | 11:35:05.28+6.88 s | 3.39 |
| MEMSMembach | 22.0 | 87 | 11:35:01.95+3.55 s | – | – |
| EBNEben-Emael | 22.2 | 356 | 11:35:02.39+3.99 s | – | – |
| MRGMont Rigi | 28.3 | 110 | 11:35:03.34+4.94 s | 11:35:07.27+8.87 s | 3.93 |
| CLAClavier | 34.5 | 235 | 11:35:04.72+6.32 s | 11:35:08.21+9.81 s | 3.49 |
| HOUHouvegnez | 34.7 | 141 | 11:35:05.79+7.39 s | 11:35:09.23+10.83 s | 3.44 |
| GESGesves | 49.5 | 242 | 11:35:07.55+9.15 s | 11:35:13.98+15.58 s | 6.43 |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 24.7 | 42 | 11:35:02.68+4.28 s | 11:35:06.53+8.13 s | 3.85 |
| VKBValkenburg | 30.5 | 11 | 11:35:04.19+5.79 s | 11:35:08.60+10.20 s | 4.41 |