TROOZ (BE)
Quarry blast10 September 2020
- Magnitude
- 1.2ML
- Depth
- –
- Belgian time
- 12:44:032020-09-10
- UTC
- 10:44:032020-09-10
Main parameters
| Date and time | 2020-09-10 10:44:03 UTC 2020-09-10 12:44:03 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.556° N, 5.711° E Uncertainty ± 1.0 km |
| Event ID | ROB 10840 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2020-09-10 13:19:22 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
- 8
- Epicentral distance
- 12.2 – 58.1km
- Mean velocity, P wave
- 6.0km/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: 8 measurements, root-mean-square deviation 0.28 s. S wave: 5 measurements, root-mean-square deviation 0.40 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)7 stations | |||||
| LCHLa Chartreuse | 12.2 | 320 | 10:44:05.64+2.08 s | 10:44:08.03+4.47 s | 2.39 |
| MEMHMembach | 22.0 | 74 | 10:44:07.46+3.90 s | 10:44:10.60+7.04 s | 3.14 |
| MEMSMembach | 22.0 | 74 | 10:44:07.47+3.91 s | – | – |
| MRGMont Rigi | 26.3 | 101 | 10:44:08.44+4.88 s | 10:44:12.19+8.63 s | 3.75 |
| EBNEben-Emael | 26.9 | 355 | 10:44:08.24+4.68 s | – | – |
| CLAClavier | 32.8 | 242 | 10:44:09.50+5.94 s | – | – |
| KLBKalborn | 58.1 | 151 | 10:44:14.22+10.66 s | 10:44:20.75+17.19 s | 6.53 |
| Dutch seismic network (KNMI)1 station | |||||
| HGNHeimansgroeve | 27.9 | 34 | 10:44:08.35+4.79 s | 10:44:12.75+9.19 s | 4.40 |