MARCHE-LES-DAMES (BE)
Quarry blast26 January 2017
- Magnitude
- 1.3ML
- Depth
- 4.9km ± 7.7
- Belgian time
- 14:21:372017-01-26
- UTC
- 13:21:372017-01-26
Main parameters
| Date and time | 2017-01-26 13:21:37 UTC 2017-01-26 14:21:37 Belgian time |
|---|---|
| Magnitude | ML 1.3 |
| Epicentral coordinates | 50.502° N, 4.968° E Uncertainty ± 2.1 km |
| Depth of hypocenter | 4.9 ± 7.7 km |
| Event ID | ROB 5621 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2017-01-27 08:22:11 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
- 15.5 – 75.5km
- Mean velocity, P wave
- 5.7km/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 4.9 km. P wave: 8 measurements, root-mean-square deviation 0.28 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 | ||||||
| GESGesves | 15.5 | 147 | 13:21:39.16+2.13 s | – | – | – |
| CLAClavier | 25.4 | 111 | 13:21:41.46+4.43 s | 13:21:44.86+7.83 s | 3.40 | 19.7 |
| MRDMaredsous | 26.4 | 213 | 13:21:41.68+4.65 s | – | – | – |
| RCHRochefort | 42.8 | 154 | 13:21:43.86+6.83 s | – | – | – |
| DOUDourbes | 52.5 | 211 | 13:21:46.21+9.18 s | 13:21:53.06+16.03 s | 6.85 | – |
| SKQSteenkerque | 65.0 | 285 | 13:21:47.84+10.81 s | – | – | – |
| MEMHMembach | 74.8 | 80 | 13:21:49.68+12.65 s | – | – | – |
| HOUHouvegnez | 75.5 | 102 | 13:21:50.12+13.09 s | 13:21:59.44+22.41 s | 9.32 | – |
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