TROOZ (BE)
Quarry blast17 March 2020
- Magnitude
- 1.4ML
- Depth
- –
- Belgian time
- 14:26:452020-03-17
- UTC
- 13:26:452020-03-17
Main parameters
| Date and time | 2020-03-17 13:26:45 UTC 2020-03-17 14:26:45 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.564° N, 5.708° E Uncertainty ± 0.9 km |
| Event ID | ROB 9505 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-03-17 15:19:46 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
- 9
- Epicentral distance
- 11.4 – 94.8km
- Mean velocity, P wave
- 5.3km/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: 9 measurements, root-mean-square deviation 0.38 s. S wave: 6 measurements, root-mean-square deviation 0.58 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 | 11.4 | 317 | 13:26:47.81+2.09 s | – | – |
| MEMHMembach | 22.0 | 77 | 13:26:49.53+3.81 s | 13:26:52.72+7.00 s | 3.19 |
| EBNEben-Emael | 26.0 | 355 | 13:26:50.68+4.96 s | – | – |
| MRGMont Rigi | 26.7 | 103 | 13:26:50.82+5.10 s | – | – |
| HOUHouvegnez | 31.5 | 138 | 13:26:51.85+6.13 s | 13:26:55.32+9.60 s | 3.47 |
| CLAClavier | 33.0 | 241 | 13:26:51.39+5.67 s | 13:26:56.70+10.98 s | 5.31 |
| GESGesves | 48.3 | 246 | 13:26:54.88+9.16 s | 13:27:00.63+14.91 s | 5.75 |
| DOUDourbes | 94.8 | 237 | 13:27:04.42+18.70 s | 13:27:13.31+27.59 s | 8.89 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 27.3 | 35 | 13:26:50.62+4.90 s | 13:26:54.26+8.54 s | 3.64 |