After a period of relative “calm” in the Asthenosphere , which lasted approximately 1 week, over the past few days we have now seen TWO deep earthquakes below Fiji / Tonga in the West Pacific.
________
The Asthenosphere is an area of semi-melted magma located below the plates / lithosphere / Earth’s crust.
As we have seen in the past, when there is deep movement in the Asthenosphere, the activity is usually followed up by SHALLOW earthquake activity in a nearby adjacent area within a few days of the deep event.
Here is a video explanation of the Asthenosphere movement:
Thus, we need to watch the nearby adjacent areas to these two deep M6.0+ earthquakes for possible shallow larger seismic activity over the next several days.
________
Information on the current M6.5 earthquake from the USGS:
M6.5 – 56km NE of Ndoi Island, Fiji
http://earthquake.usgs.gov/earthquakes/eventpage/at00nqbcz5#scientific_origin:at_at00nqbcz5
| Magnitude | 6.5 Mb |
|---|---|
| Location/uncertainty | 20.300°S 178.300°W± 0.0 km |
| Depth/uncertainty | 573.0 km± 0.0 |
| Origin Time | 2015-06-21 21:28:17.000 UTC |
| Number of Stations | 23 |
| Number of Phases | 23 |
| Minimum Distance | 493.00 km (4.43°) |
| Travel Time Residual | 1.21 sec |
| Azimuthal Gap | 82.8° |
| FE Region | Fiji region (181) |
________
Information on the other deep M6.0 event from June 17, 2015:
M6.0 – 34km NW of Ndoi Island, Fiji
http://earthquake.usgs.gov/earthquakes/eventpage/us20002q6u#scientific_origin:us_us20002q6u
| Magnitude/uncertainty | 6.0 mwb± 0.0 |
|---|---|
| Location/uncertainty | 20.405°S 178.911°W± 8.5 km |
| Depth/uncertainty | 653.0 km± 4.2 |
| Origin Time | 2015-06-16 06:17:00.580 UTC |
| Number of Stations | – |
| Number of Phases | 160 |
| Minimum Distance | 434.59 km (3.90°) |
| Travel Time Residual | 1.25 sec |
| Azimuthal Gap | 38° |
| FE Region | Fiji region (181) |
________
