OLNE (BE)
Quarry blast5 March 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:19:372020-03-05
- UTC
- 13:19:372020-03-05
Main parameters
| Date and time | 2020-03-05 13:19:37 UTC 2020-03-05 14:19:37 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.580° N, 5.718° E Uncertainty ± 1.3 km |
| Event ID | ROB 9395 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-05 22:31:37 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
- 5
- Epicentral distance
- 10.7 – 34.5km
- Mean velocity, P wave
- 6.1km/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: 5 measurements, root-mean-square deviation 0.23 s. S wave: 4 measurements, root-mean-square deviation 0.20 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)4 stations | |||||
| LCHLa Chartreuse | 10.7 | 308 | 13:19:38.95+1.80 s | 13:19:41.07+3.92 s | 2.12 |
| MEMHMembach | 20.9 | 81 | 13:19:40.72+3.57 s | 13:19:43.93+6.78 s | 3.21 |
| HOUHouvegnez | 32.4 | 141 | 13:19:43.08+5.93 s | – | – |
| CLAClavier | 34.5 | 239 | 13:19:42.81+5.66 s | 13:19:48.35+11.20 s | 5.54 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 25.4 | 36 | 13:19:41.61+4.46 s | 13:19:45.79+8.64 s | 4.18 |