HOTTON (BE)
Known mine explosion20 August 2013
- Magnitude
- 1.2ML
- Depth
- 2.6km ± 7.5
- Belgian time
- 10:39:282013-08-20
- UTC
- 08:39:282013-08-20
Main parameters
| Date and time | 2013-08-20 08:39:28 UTC 2013-08-20 10:39:28 Belgian time |
|---|---|
| Magnitude | ML 1.2 |
| Epicentral coordinates | 50.246° N, 5.432° E Uncertainty ± 1.4 km |
| Depth of hypocenter | 2.6 ± 7.5 km |
| Event ID | ROB 4934 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2013-08-20 12:03:16 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
- 6
- Epicentral distance
- 21.3 – 62.1km
- Mean velocity, P wave
- 5.2km/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 2.6 km. P wave: 6 measurements, root-mean-square deviation 0.43 s. S wave: 5 measurements, root-mean-square deviation 0.19 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)6 stations | ||||||
| CLAClavier | 21.3 | 334 | 08:39:31.62+3.50 s | – | – | – |
| HOUHouvegnez | 42.5 | 73 | 08:39:35.52+7.40 s | 08:39:40.70+12.58 s | 5.18 | – |
| MRDMaredsous | 47.8 | 278 | 08:39:36.04+7.92 s | 08:39:42.29+14.17 s | 6.25 | 6.8 |
| KLBKalborn | 51.0 | 108 | 08:39:36.99+8.87 s | 08:39:42.95+14.83 s | 5.96 | – |
| MEMSMembach | 57.6 | 45 | 08:39:38.04+9.92 s | 08:39:45.33+17.21 s | 7.29 | – |
| DOUDourbes | 62.1 | 255 | 08:39:40.13+12.01 s | 08:39:46.34+18.22 s | 6.21 | 8.7 |