MARCHE-LES-DAMES (BE)
Known mine explosion2 October 2015
- Magnitude
- 1.0ML
- Depth
- 3.4km ± 7.6
- Belgian time
- 14:17:282015-10-02
- UTC
- 12:17:282015-10-02
Main parameters
| Date and time | 2015-10-02 12:17:28 UTC 2015-10-02 14:17:28 Belgian time |
|---|---|
| Magnitude | ML 1.0 |
| Epicentral coordinates | 50.483° N, 4.983° E Uncertainty ± 1.9 km |
| Depth of hypocenter | 3.4 ± 7.6 km |
| Event ID | ROB 5412 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-10-06 08:22:13 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
- 10
- Epicentral distance
- 13.2 – 74.1km
- Mean velocity, P wave
- 5.7km/s
- Mean velocity, S wave
- 3.2km/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 3.4 km. P wave: 9 measurements, root-mean-square deviation 0.41 s. S wave: 9 measurements, root-mean-square deviation 0.77 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 | |
|---|---|---|---|---|---|
| Belgian seismic network (Royal Observatory of Belgium)10 stations | |||||
| GESGesves | 13.2 | 146 | 12:17:30.07+2.03 s | 12:17:31.95+3.91 s | 1.88 |
| CLAClavier | 23.7 | 107 | 12:17:31.97+3.93 s | 12:17:35.84+7.80 s | 3.87 |
| MRDMaredsous | 25.3 | 217 | 12:17:32.19+4.15 s | 12:17:34.70+6.66 s | 2.51 |
| RCHRochefort | 40.4 | 154 | 12:17:34.99+6.95 s | 12:17:40.44+12.40 s | 5.45 |
| LCHLa Chartreuse | 47.0 | 68 | 12:17:35.67+7.63 s | 12:17:41.33+13.29 s | 5.66 |
| DOUDourbes | 51.3 | 213 | 12:17:37.10+9.06 s | 12:17:44.08+16.04 s | 6.98 |
| RQRRonquières | 55.5 | 285 | 12:17:36.96+8.92 s | – | – |
| SKQSteenkerque | 66.6 | 286 | 12:17:38.71+10.67 s | 12:17:49.79+21.75 s | 11.08 |
| MEMHMembach | 74.1 | 79 | 12:17:41.43+13.39 s | 12:17:50.09+22.05 s | 8.66 |
| MEMSMembach | 74.1 | 79 | – | 12:17:50.05+22.01 s | – |