BERTOGNE (BE)
Suspected rockburst13 May 2015
- Magnitude
- 1.9ML
- Depth
- 9.6km ± 12.1
- Belgian time
- 14:25:292015-05-13
- UTC
- 12:25:292015-05-13
Main parameters
| Date and time | 2015-05-13 12:25:29 UTC 2015-05-13 14:25:29 Belgian time |
|---|---|
| Magnitude | ML 1.9 |
| Epicentral coordinates | 50.058° N, 5.637° E Uncertainty ± 3.1 km |
| Depth of hypocenter | 9.6 ± 12.1 km |
| Event ID | ROB 5323 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-05-13 15:00:20 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
- 31.3 – 74.7km
- Mean velocity, P wave
- 5.6km/s
- Mean velocity, S wave
- 3.3km/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 9.6 km. P wave: 7 measurements, root-mean-square deviation 0.48 s. S wave: 8 measurements, root-mean-square deviation 0.70 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 | ||||||
| RCHRochefort | 31.3 | 290 | 12:25:34.24+4.62 s | 12:25:39.01+9.39 s | 4.77 | – |
| HOUHouvegnez | 42.1 | 38 | 12:25:37.09+7.47 s | 12:25:42.00+12.38 s | 4.91 | – |
| CLAClavier | 46.8 | 329 | 12:25:38.08+8.46 s | 12:25:44.20+14.58 s | 6.12 | 44.3 |
| GESGesves | 53.5 | 313 | 12:25:37.97+8.35 s | 12:25:45.60+15.98 s | 7.63 | – |
| MRGMont Rigi | 59.3 | 32 | 12:25:39.99+10.37 s | 12:25:46.34+16.72 s | 6.35 | – |
| MEMSMembach | 66.8 | 23 | 12:25:41.42+11.80 s | 12:25:48.93+19.31 s | 7.51 | 35.3 |
| MRDMaredsous | 67.8 | 294 | – | 12:25:50.91+21.29 s | – | 28.0 |
| DOUDourbes | 74.7 | 274 | 12:25:42.69+13.07 s | 12:25:50.76+21.14 s | 8.07 | – |