Geologists fear aftershocks in Japan may trigger other faults to erupt

May 26, 2011TOKYO  – Japan’s recent magnitude 9.0 earthquake, which triggered a devastating tsunami, relieved stress along part of the quake fault but also has contributed to the build-up of stress in other areas, putting some of the country at risk for up to years of sizeable aftershocks and perhaps new main shocks, scientists say. After studying data from Japan’s extensive seismic network, researchers from the Woods Hole Oceanographic Institution (WHOI), Kyoto University and the U.S. Geological Survey (USGS) have identified several areas at risk from the quake, Japan’s largest ever, which already has triggered a large number of aftershocks. Data from the magnitude 9.0 Tohoku earthquake on March 11 has brought scientists a small but perceptible step closer to a better assessment of future seismic risk in specific regions, said Shinji Toda of Kyoto University, a lead author of the study. “Even though we cannot forecast precisely, we can explain the mechanisms involved in such quakes to the public,” he said. Still, he added, the findings do bring scientists “a little bit closer” to being able to forecast aftershocks. “Research over the past two decades has shown that earthquakes interact in ways never before imagined,” Toda, Jian Lin of WHOI and Ross S. Stein of USGS write in a summary of their paper in press for publication in the Tohoku Earthquake Special Issue of the journal Earth, Planets and Space. “A major shock does relieve stress—and thus the likelihood of a second major tremor—but only in some areas. The probability of a succeeding earthquake adjacent to the section of the fault that ruptured or on a nearby but different fault can jump” significantly. The Tohoku earthquake, centered off northern Honshu Island, provided an “unprecedented” opportunity to utilize Japan’s “superb monitoring networks” to gather data on the quake, the scientists said. The Tohoku quake, the fourth largest earthquake ever recorded, was “the best-recorded [large quake] the world has ever known.” This made the quake a “special” one in terms of scientific investigation, Lin said. “We felt we might be able to find something we didn’t see before” in previous quakes, he said. The magnitude 9 quake appears to have influenced large portions of Honshu Island, Toda said. At particular risk, he said, are the Tokyo area, Mount Fuji and central Honshu including Nagano. –Physics.org
We reported this some days ago. See our post on how seismic tension has transferred along faults in Northern Japan
This entry was posted in Earth Changes, Earth Watch, High-risk potential hazard zone, Potential Earthchange hotspot, Seismic tremors, Volcano Watch. Bookmark the permalink.

5 Responses to Geologists fear aftershocks in Japan may trigger other faults to erupt

  1. Timothy Auble says:

    At the edge of our solar system is a brown dwarf star called G1.9 just outside of Pluto near the kiper belt. If this has planets around it then MAJOR earth changes WILL happen. Ie.. Magnetic Pole shifts and Earthquakes more major than the 9.0 in Japan. Probably never a 10.0 but near that magnitude. Not just Japan would be in trouble, but the civilization, and life on Earth as we know it would change dramatically.

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  2. Terry Thomas says:

    Can you give a little more information on what the dwarf star has planets, what difference does this make? Thank you. And when? Has not this star been here? Or is is a moving star?

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  3. Brandon says:

    Hi, Timothy!

    Earth changes are definitely happening. However, didn’t NASA and the Starviewer Team confirm that G1.9 is a supernova remnant? Maybe I’m wrong?

    Brandon

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  4. Luca says:

    Explain what you mean Timothy your comment confuses me

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  5. RebelSoul says:

    I agree. It seems like everytime we have an alignment with this brown dwarf (a super-cold, failed star, about 4 times the size of jupiter, see comet elenins trajectory on JPL for approachdata and next alignments) we have a major tectonic event here on earth. Quakes in Chile, Christchurch and Japan have all come on alignments with this object. There are some data out there pointing to how the planets lie in gravitational wells and that we are affected through the channels that comes in to effect between the wells during alignments. Next alignment will be around the 26th of september. If this is correct, this will be a teotwawki-event.

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