HEYD (BE)
Quarry blast12 October 2016
- Magnitude
- 1.2ML
- Depth
- 7.7km ± 3.2
- Belgian time
- 12:27:562016-10-12
- UTC
- 10:27:562016-10-12
Main parameters
| Date and time | 2016-10-12 10:27:56 UTC 2016-10-12 12:27:56 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.359° N, 5.557° E Uncertainty ± 0.7 km |
| Depth of hypocenter | 7.7 ± 3.2 km |
| Event ID | ROB 5561 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2016-10-13 11:26:28 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
- 11
- Epicentral distance
- 19.3 – 114.7km
- Mean velocity, P wave
- 6.0km/s
- Mean velocity, S wave
- 3.5km/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 7.7 km. P wave: 11 measurements, root-mean-square deviation 0.21 s. S wave: 5 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 | nm | |
|---|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)11 stations | ||||||
| CLAClavier | 19.3 | 290 | 10:27:59.35+3.03 s | – | – | – |
| STISart Tilman | 24.9 | 1 | 10:28:00.94+4.62 s | – | – | – |
| HOUHouvegnez | 31.9 | 91 | 10:28:01.87+5.55 s | – | – | – |
| RCHRochefort | 32.7 | 226 | 10:28:02.18+5.86 s | 10:28:06.19+9.87 s | 4.01 | – |
| MRGMont Rigi | 40.5 | 65 | 10:28:03.32+7.00 s | 10:28:08.57+12.25 s | 5.25 | – |
| MEMSMembach | 42.5 | 49 | 10:28:03.78+7.46 s | 10:28:08.73+12.41 s | 4.95 | – |
| TNLTernell | 47.9 | 58 | 10:28:04.62+8.30 s | – | – | – |
| KLBKalborn | 48.8 | 126 | 10:28:04.81+8.49 s | 10:28:10.42+14.10 s | 5.61 | – |
| DOUDourbes | 74.7 | 247 | 10:28:09.28+12.96 s | 10:28:17.69+21.37 s | 8.41 | 5.8 |
| WLFWalferdange | 88.3 | 151 | 10:28:11.27+14.95 s | – | – | – |
| BOUBougnies | 114.7 | 272 | 10:28:15.57+19.25 s | – | – | – |
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