LA ROCHE-EN-ARDENNE (BE)
Known mine explosion4 May 2015
- Magnitude
- 1.5ML
- Depth
- 11.7km ± 6.3
- Belgian time
- 14:44:032015-05-04
- UTC
- 12:44:032015-05-04
Main parameters
| Date and time | 2015-05-04 12:44:03 UTC 2015-05-04 14:44:03 Belgian time |
|---|---|
| Magnitude | ML 1.5 |
| Epicentral coordinates | 50.172° N, 5.599° E Uncertainty ± 1.6 km |
| Depth of hypocenter | 11.7 ± 6.3 km |
| Event ID | ROB 5321 |
Data source : ROB (Royal Observatory of Belgium)
Last update : 2015-05-05 10:43:22 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
- 12
- Epicentral distance
- 26.6 – 72.3km
- Mean velocity, P wave
- 6.4km/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 11.7 km. P wave: 12 measurements, root-mean-square deviation 1.01 s. S wave: 8 measurements, root-mean-square deviation 0.43 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)12 stations | ||||||
| RCHRochefort | 26.6 | 266 | 12:44:08.03+4.83 s | 12:44:11.38+8.18 s | 3.35 | – |
| CLAClavier | 34.7 | 323 | 12:44:09.11+5.91 s | 12:44:13.52+10.32 s | 4.41 | 7.4 |
| HOUHouvegnez | 35.4 | 55 | 12:44:09.36+6.16 s | 12:44:15.05+11.85 s | 5.69 | 49.9 |
| KLBKalborn | 37.3 | 102 | 12:44:09.68+6.48 s | 12:44:14.92+11.72 s | 5.24 | – |
| GESGesves | 43.5 | 303 | 12:44:10.64+7.44 s | 12:44:16.85+13.65 s | 6.21 | 29.2 |
| STISart Tilman | 45.8 | 357 | 12:44:11.37+8.17 s | – | – | – |
| MRGMont Rigi | 50.7 | 42 | 12:44:11.04+7.84 s | – | – | – |
| LCHLa Chartreuse | 52.0 | 0 | 12:44:11.80+8.60 s | 12:44:18.75+15.55 s | 6.95 | – |
| MEMSMembach | 56.8 | 31 | 12:44:09.38+6.18 s | – | – | – |
| TNLTernell | 59.6 | 39 | 12:44:13.53+10.33 s | – | – | – |
| MRDMaredsous | 61.0 | 284 | 12:44:13.65+10.45 s | 12:44:21.33+18.13 s | 7.68 | – |
| DOUDourbes | 72.3 | 264 | 12:44:15.99+12.79 s | 12:44:24.34+21.14 s | 8.35 | – |