Not by Fire but by Ice


     Email Robert      l     Reviews     l      Order Not by Fire     l     Order Magnetic Reversals      l      Dissenters      l       Recent articles 

Discover What Killed the Dinosaurs . . . and Why it Could Soon Kill Us       

No sign of Mt. Fuji erupting, say experts

Other experts wonder


                       page delimiter

3 Apr 11 - Although a large, shallow earthquake (magnitude 6.2) occurred under Mt Fujiyama Volcano, Japan on the 15th of March 2011, experts insist that there is no sign of an imminent eruption.  

A week after the earthquake, a government panel of experts in volcanic eruptions said that, despite the series of temblors in the region, "it had detected no signs that Mt. Fuji and other active volcanoes west of Tokyo might soon erupt."

''With no subtle volcanic movements or crustal movements, we do not see signs that would immediately lead to eruptions,'' Hitoshi Yamasato, a panel member told reporters.

Although Mt Fuji last erupted in 1708, it is "still considered an active volcano," says volcanologist John Search.  

Prior to Mt. Fuji's last eruption, a magnitude 8.4 earthquake hit Honshu, Japan, on 26 Oct 1707, says Search. This was followed by several smaller earthquakes around Mt Fuji.

Two months later, on December 16th, came the eruption.

"On the first day of the eruption," says Search, "72 houses and three Buddhist temples were destroyed in the town of Subassiri 10 km from the volcano."

Over a period of 16 days, some 0.68 cubic km (.16 cu miles) of tephra (dense rock equivalent) fell over the south Kanto plain, Tokyo, and NW Pacific ocean 280 km from the volcano.

According to Search, Mt Fuji erupted several times prior to the 1707-08 incident; in 1700, 1627?, 1560, 1511, 1427?, 1083, 1032, 1017?, and several times in the 900s and 800s.

"A 2004 Japanese government simulation determined that in the worst-case scenario, a major eruption of Fuji would cause 2.5 trillion yen in economic damage," says Search.

Mount Fuji Overdue for Eruption

"Mount Fuji Overdue for Eruption," headlined this 2006 article in National Geographic.

"In the last 2,200 years, Fuji has erupted at least 75 times," said Shigeo Aramaki, one of Japan's leading volcano experts. "That means an average interval of 30 years between eruptions."

"In the last 300 years there has been no eruption," said Aramaki. "With the past level of activity in mind, you cannot deny that 300 years of repose is pretty long—too long."


Thanks to Ty Weston for this info. Ty sent me a link to a USGS website that recorded this earthquake. However, for some reason, that link has since been rendered inactive.




Order Book I Q & A I Book Reviews I Plant Hardiness Zone Maps I Radio Interviews I Table of Contents I Excerpts I Author Photo I Pacemaker of the Ice Ages I Extent of Previous Glaciation I Crane Buried in Antarctic Ice Sheet I Ice Ages and Magnetic Reversals I It's Ocean Warming I E-Mail Robert at l Expanding Glaciers