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2013 1 25 5 50 16.0 -3.25 149.25 33.0 5.0 BISMARCK SEA
2013 1 25 5 19 28.0 -3.25 149.25 33.0 5.3 BISMARCK SEA
2013 1 25 5 12 40.0 -3.25 149.25 33.0 5.3 BISMARCK SEA
2013 1 25 5 1 4.0 -3.25 149.25 33.0 5.0 BISMARCK SEA
Originally posted by lasertaglover
reply to post by MariaLida
BBC is the only msm source I could find regarding the Italian quake today.
No injuries reported, yay! Power and phone lines are down however.
Set against Africa's march northward at about 2cm a year, Italy is also being pulled and pushed in some complex motions.
The Tyrrhenian Basin, or Sea, which lies to the west of the country, between the mainland and Sardinia/Corsica, is slowly opening up.
Scientists say this is contributing to extension, or "pull-apart", along the Apennines, the belt of mountains that runs down through central Italy.
And to the east, in the Adriatic, there is some evidence that the Earth's crust continues to move under (subducting) Italy, although there is considerable debate about this. Recent GPS data suggests this region, too, is shifting to the northeast.
In their analysis, the researchers point to several subduction zone areas that previously had been discounted as potential 9.0 earthquake producers -- but may be due for reconsideration. These include central Chile, Peru, New Zealand, the Kuriles fault between Japan and Russia, the western Aleutian Islands, the Philippines, Java, the Antilles Islands and Makran, Pakistan/Iran.
Onshore faults such as the Himalayan Front may also be hiding outsized earthquakes, the researchers add. Their work was supported by the National Science Foundation.
Goldfinger, who directs the Active Tectonics and Seafloor Mapping Laboratory at Oregon State, is a leading expert on the Cascadia Subduction Zone off the Pacific Northwest coast of North America. His comparative studies have taken him to the Indian Ocean, Japan and Chile, and in 2007, he led the first American research ship into Sumatra waters in nearly 30 years to study similarities between the Indian Ocean subduction zone and Cascadia.
Paleoseismic evidence abounds in the Cascadia Subduction Zone, Goldfinger pointed out. When a major offshore earthquake occurs, the disturbance causes mud and sand to begin streaming down the continental margins and into the undersea canyons. Coarse sediments called turbidites run out onto the abyssal plain; these sediments stand out distinctly from the fine particulate matter that accumulates on a regular basis between major tectonic events.
By dating the fine particles through carbon-14 analysis and other methods, Goldfinger and colleagues can estimate with a great deal of accuracy when major earthquakes have occurred. Over the past 10,000 years, there have been 19 earthquakes that extended along most of the Cascadia Subduction Zone margin, stretching from southern Vancouver Island to the Oregon-California border.
"These would typically be of a magnitude from about 8.7 to 9.2 -- really huge earthquakes," Goldfinger said. "We've also determined that there have been 22 additional earthquakes that involved just the southern end of the fault. We are assuming that these are slightly smaller -- more like 8.0 -- but not necessarily. They were still very large earthquakes that if they happened today could have a devastating impact."
Originally posted by muzzy
Only been a week since our last mag 5, but the TTNT that been released since is almost down to zero, only 2 tonnes yesterday (26thUTC) , and no mag 3's in the 24hrs at all.
Bit of a worry
Build up of tension
edit on 26-1-2013 by muzzy because: (no reason given)
Seismic Intensity at each station
(* mark: Local Governments' or NIED's station)
Prefecture JMA Seismic Intensity Station Name
Ibaraki 5- Mito-shi Uchiharacho*