RETINNE (BE)
Quarry blast20 April 2017
- Magnitude
- 1.5ML
- Depth
- 8.7km ± 8.0
- Belgian time
- 15:43:092017-04-20
- UTC
- 13:43:092017-04-20
Main parameters
| Date and time | 2017-04-20 13:43:09 UTC 2017-04-20 15:43:09 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.627° N, 5.704° E Uncertainty ± 7.0 km |
| Depth of hypocenter | 8.7 ± 8.0 km |
| Event ID | ROB 5677 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-04-24 07:46:30 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
- 7.6 – 98.6km
- Mean velocity, P wave
- 5.4km/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. Hypocenter at a depth of 8.7 km. P wave: 8 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)8 stations | ||||||
| LCHLa Chartreuse | 7.6 | 280 | 13:43:11.53+1.92 s | 13:43:13.12+3.51 s | 1.59 | 76.4 |
| STISart Tilman | 11.0 | 244 | 13:43:11.23+1.62 s | – | – | – |
| MEMHMembach | 21.7 | 95 | 13:43:13.66+4.05 s | 13:43:17.33+7.72 s | 3.67 | – |
| MRGMont Rigi | 29.3 | 116 | 13:43:14.82+5.21 s | – | – | – |
| TNLTernell | 30.5 | 98 | 13:43:14.40+4.79 s | – | – | – |
| CLAClavier | 36.7 | 231 | 13:43:16.46+6.85 s | – | – | – |
| HOUHouvegnez | 37.1 | 145 | 13:43:15.91+6.30 s | – | – | – |
| DOUDourbes | 98.6 | 234 | 13:43:27.39+17.78 s | – | – | – |
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