OLNE (BE)
Quarry blast5 May 2020
- Magnitude
- 1.3ML
- Depth
- –
- Belgian time
- 11:54:552020-05-05
- UTC
- 09:54:552020-05-05
Main parameters
| Date and time | 2020-05-05 09:54:55 UTC 2020-05-05 11:54:55 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.593° N, 5.712° E Uncertainty ± 0.6 km |
| Event ID | ROB 9970 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-05-05 12:10:21 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
- 9.5 – 96.9km
- Mean velocity, P wave
- 5.9km/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 0.27 s. S wave: 7 measurements, root-mean-square deviation 0.33 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 | 9.5 | 303 | 09:54:57.50+1.58 s | 09:54:59.18+3.26 s | 1.68 |
| MEMHMembach | 21.2 | 85 | 09:54:59.54+3.62 s | 09:55:02.34+6.42 s | 2.80 |
| MRGMont Rigi | 27.3 | 109 | 09:55:00.65+4.73 s | 09:55:04.56+8.64 s | 3.91 |
| HOUHouvegnez | 33.8 | 142 | 09:55:02.36+6.44 s | – | – |
| GESGesves | 50.0 | 243 | 09:55:04.97+9.05 s | 09:55:11.29+15.37 s | 6.32 |
| RCHRochefort | 59.7 | 215 | 09:55:06.57+10.65 s | – | – |
| KLBKalborn | 61.7 | 153 | 09:55:06.36+10.44 s | 09:55:14.42+18.50 s | 8.06 |
| DOUDourbes | 96.9 | 236 | 09:55:12.59+16.67 s | – | – |
| Dutch seismic network (KNMI)2 stations | |||||
| HGNHeimansgroeve | 24.6 | 39 | 09:55:00.19+4.27 s | 09:55:04.14+8.22 s | 3.95 |
| VKBValkenburg | 30.9 | 10 | 09:55:01.27+5.35 s | 09:55:06.03+10.11 s | 4.76 |