Japan just had a 6.8 Magnitude earthquake one week ago. Its largest active volcano, Mt. Aso, has just erupted for the first time in 22 years. It is in close proximity to Genkai (4 reactors), to Sendai, to Ikata and to Shimane Nuclear Power Stations. There are also Korean nuclear power stations nearby.
Map showing Nuclear Power Stations and Japanese Volcanos:
Data CC-BY-NC-SA-4.0 by Climate Viewer and CC-BY-SA-3.0 by Wikipedia
“Mount Aso (阿蘇山 Aso-san?) is the largest active volcano in Japan, and is among the largest in the world.” http://en.wikipedia.org/wiki/Mount_Aso
What is the world awaiting before understanding that Japan (and Korea) is no place for nuclear reactors? Something even worse than the Fukushima disaster? The situation is critical.
Of course, it’s not news unless it disrupts flights and even then:
“Japan’s Mount Aso erupts for first time in 22 years, disrupting flights Eruption not expected to increase in scale” Nov 28, 2014 8:14 AM ET http://www.cbc.ca/news/world/japan-s-mount-aso-erupts-for-first-time-in-22-years-disrupting-flights-1.2853329
“Aso has one of the largest calderas in the world (25 km north-south and 18 km east-west). The caldera has a circumference of around 120 km (75 mi), although sources vary on the exact distance….
The central cone group of Aso consists of five peaks: Mt. Neko, Mt. Taka, Mt. Naka (also called Nakadake or Naka-Dake), Mt. Eboshi, and Mt. Kishima. The highest point is the summit of Mt. Taka, at 1592 m above sea level. The crater of Mt. Naka, the west side of which is accessible by road, contains an active volcano which continuously emits smoke and has occasional eruptions. Only the northernmost crater (the first crater) has been active for the last 70 years—1974, 1979, 1984–1985, 1989–1991, 2009, and 2011.
The present Aso caldera formed as a result of four huge caldera eruptions occurring over a range of 90,000–300,000 years ago. The caldera, one of the largest in the world, contains the city of Aso as well as Aso Takamori-cho and South Aso-mura. The somma enclosing the caldera extends about 18 km east to west and about 25 km north to south. Viewpoints from the somma overlooking the caldera are perched upon lava formed before the volcanic activity which created the present caldera. Ejecta from the huge caldera eruption 90,800 years ago covers more than 600 km³ and roughly equals the volume of Mt. Fuji; it is presumed that the pyroclastic flow plateau covered half of Kyūshū…
The eruption which formed the present somma occurred approximately 300,000 years ago.
Four large-scale eruptions (Aso 1 – 4) occurred during a period extending from 300,000 to 90,000 years ago. As large amounts of pyroclastic flow and volcanic ash were emitted from the volcanic chamber, a huge depression (caldera) was formed as the chamber collapsed. The fourth eruption (Aso 4) was the largest, with volcanic ash covering the entire Kyūshū region and even extending to Yamaguchi Prefecture“. http://en.wikipedia.org/wiki/Mount_Aso
Climate Viewer Data, CC-BY-NC-4.0
“Mt. Taka, Mt. Naka, Mt. Eboshi, and Mt. Kishima are cones formed following the fourth above-mentioned huge caldera eruption. Mt. Naka remains active today. It is presumed that Mt. Neko is older than the fourth huge caldera eruption.” http://en.wikipedia.org/wiki/Mount_Aso
One week ago, on November 22, 2014 13:08:18 UTC, 2014-11-22 22:08:18 UTC+09:00 at epicenter Japan had a 6.8 magnitude land based earthquake. (The USGS still has it as 6.2 but the Japanese gov had it at 6.8) http://earthquake.usgs.gov/earthquakes/eventpage/usb000syza#summary
(Compare to the offshore Tohoku earthquake in 2011 which was about 7.0 magnitude at its strongest on land).
Shortly after the Great Tohoku 9.0 offshore earthquake which triggered the Fukushima disaster, a Volcanic Eruption occurred:
“Shinmoedake, a volcano in Kyushu, erupted three days after the earthquake. The volcano had previously erupted in January 2011; it is not known if the later eruption was linked to the earthquake. In Antarctica, the seismic waves from the earthquake were reported to have caused the Whillans Ice Stream to slip by about 0.5 m (1.6 ft).” http://en.wikipedia.org/wiki/2011_Tōhoku_earthquake_and_tsunami
Map with stars showing the two earthquakes and two volcanos. The star near Fukushima is the epicentre of the Great Tohoku earthquake (9.0) and the other star is the 6.8 one week ago. The Shinmoedake erupted 3 days after Fukushima and Mt. Aso less than one week after the 6.8 earthquake.
Coordinates exported from USGS and Wikipedia
“Teleseismic waves from the 1999 Chi-Chi, Taiwan earthquake dynamically triggered isolated tremor and micro-earthquakes at Aso volcano, Japan, which is at a distance of 1400 km.”
“The activity of volcanic earthquakes and tectonic earthquakes may be mutually related, even thoughtheir locations are spatially separated“. From: “Dynamic response of frequent tremors at Aso volcano to teleseismic waves from the 1999 Chi-Chi, Taiwan earthquake” Journal of Volcanology and Geothermal Research 147 (2005) 173 – 186. http://www-solid.eps.s.u-tokyo.ac.jp/~hassei/2012/papers/Miyazawa_etal_2005.pdf
After the Great Tohoku 9.0 offshore earthquake which triggered the Fukushima disaster:
Researchers examined “data from satellite radar and the Global Positioning System to show that volcanic regions, located between 150 and 200 km from the rupture area, experienced subsidence coincident with the Tohoku earthquake. The volcanic regions subsided by 5–15 cm, forming elliptical depressions with horizontal dimensions of up to 15–20 km,” according to the abstract of:
“Volcanic subsidence triggered by the 2011 Tohoku earthquake in Japan”, by Youichiro Takada and Yo Fukushima, Nature Geoscience 6, 637–641 (2013) [We only have the abstract so don’t know which volcanos these were.]
“Survey: Majority of active volcanoes in Japan lack disaster shelters November 29, 2014, By TOSHINARI KUWAYAMA/ Staff Writer http://ajw.asahi.com/article/behind_news/social_affairs/AJ201411290044
“Mount Aso volcano in Japan causes travel chaos in first eruption in 22 years” LAMIAT SABIN, Friday 28 November 2014 http://www.independent.co.uk/news/world/asia/mount-aso-volcano-in-japan-causes-travel-chaos-in-first-eruption-in-22-years-9889198.html
Map data exported from http://climateviewer.com/kml/pollution/nuclear/Nuclear-Reactors-Worldwide-CV3D.kmz (CC-BY-NC-SA-4.0) and from http://en.wikipedia.org/wiki/List_of_volcanoes_in_Japan to Google Earth. Earthquakes exported from USGS gov. Shinmoeke and Aso locations exported from wikipedia, as well, when there is an “A”.