LA ROCHE-EN-ARDENNE (BE)
Quarry blast15 March 2017
- Magnitude
- 1.5ML
- Depth
- 9.9km ± 3.4
- Belgian time
- 17:11:182017-03-15
- UTC
- 16:11:182017-03-15
Main parameters
| Date and time | 2017-03-15 16:11:18 UTC 2017-03-15 17:11:18 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.199° N, 5.603° E Uncertainty ± 0.8 km |
| Depth of hypocenter | 9.9 ± 3.4 km |
| Event ID | ROB 5651 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-03-16 07:21:12 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
- 14
- Epicentral distance
- 27.3 – 119.2km
- Mean velocity, P wave
- 6.1km/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 9.9 km. P wave: 14 measurements, root-mean-square deviation 0.26 s. S wave: 8 measurements, root-mean-square deviation 0.38 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)14 stations | ||||||
| RCHRochefort | 27.3 | 260 | 16:11:22.84+4.57 s | – | – | – |
| CLAClavier | 32.5 | 319 | 16:11:23.85+5.58 s | 16:11:28.07+9.80 s | 4.22 | 21.1 |
| KLBKalborn | 37.8 | 107 | 16:11:24.99+6.72 s | 16:11:29.69+11.42 s | 4.70 | – |
| GESGesves | 42.2 | 300 | 16:11:25.51+7.24 s | 16:11:30.96+12.69 s | 5.45 | – |
| STISart Tilman | 42.8 | 356 | 16:11:25.95+7.68 s | – | – | – |
| MRGMont Rigi | 48.3 | 44 | 16:11:26.18+7.91 s | – | – | – |
| LCHLa Chartreuse | 48.9 | 360 | 16:11:26.37+8.10 s | 16:11:33.35+15.08 s | 6.98 | – |
| VIAVianden | 52.0 | 124 | 16:11:27.64+9.37 s | 16:11:33.38+15.11 s | 5.74 | – |
| MEMHMembach | 54.0 | 32 | 16:11:27.69+9.42 s | 16:11:33.81+15.54 s | 6.12 | – |
| TNLTernell | 57.1 | 41 | 16:11:28.19+9.92 s | – | – | – |
| MRDMaredsous | 60.6 | 281 | 16:11:28.41+10.14 s | – | – | – |
| DOUDourbes | 73.0 | 261 | 16:11:30.57+12.30 s | 16:11:40.17+21.90 s | 9.60 | 14.1 |
| SNFSeneffe | 100.1 | 291 | 16:11:35.30+17.03 s | – | – | – |
| SKQSteenkerque | 119.2 | 295 | 16:11:38.07+19.80 s | 16:11:52.30+34.03 s | 14.23 | – |
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