HEYD (BE)
Quarry blast30 May 2017
- Magnitude
- 1.4ML
- Depth
- 9.9km ± 6.1
- Belgian time
- 12:06:222017-05-30
- UTC
- 10:06:222017-05-30
Main parameters
| Date and time | 2017-05-30 10:06:22 UTC 2017-05-30 12:06:22 Belgian time |
|---|---|
| Magnitude | ML 1.4 |
| Epicentral coordinates | 50.344° N, 5.565° E Uncertainty ± 1.4 km |
| Depth of hypocenter | 9.9 ± 6.1 km |
| Event ID | ROB 5728 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-05-31 07:17:15 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
- 12
- Epicentral distance
- 20.5 – 110.7km
- Mean velocity, P wave
- 5.8km/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. Hypocenter at a depth of 9.9 km. P wave: 12 measurements, root-mean-square deviation 0.47 s. S wave: 5 measurements, root-mean-square deviation 0.47 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)12 stations | ||||||
| CLAClavier | 20.5 | 294 | 10:06:24.88+2.60 s | – | – | – |
| HOUHouvegnez | 31.3 | 88 | 10:06:27.75+5.47 s | – | – | – |
| RCHRochefort | 32.0 | 229 | 10:06:28.18+5.90 s | 10:06:32.01+9.73 s | 3.83 | – |
| LCHLa Chartreuse | 32.9 | 4 | 10:06:28.00+5.72 s | 10:06:33.00+10.72 s | 5.00 | – |
| GESGesves | 34.3 | 278 | 10:06:28.20+5.92 s | 10:06:32.90+10.62 s | 4.70 | – |
| MEMHMembach | 43.2 | 47 | 10:06:29.64+7.36 s | 10:06:34.53+12.25 s | 4.89 | – |
| KLBKalborn | 47.3 | 125 | 10:06:30.78+8.50 s | – | – | – |
| TNLTernell | 48.3 | 56 | 10:06:30.49+8.21 s | – | – | – |
| MRDMaredsous | 56.9 | 266 | 10:06:31.96+9.68 s | – | – | – |
| VIAVianden | 64.3 | 135 | 10:06:33.89+11.61 s | – | – | – |
| DOUDourbes | 74.5 | 249 | 10:06:34.15+11.87 s | 10:06:44.13+21.85 s | 9.98 | 9.0 |
| SKQSteenkerque | 110.7 | 288 | 10:06:41.29+19.01 s | – | – | – |
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