Spectaculaire uitbarstingen vulkaan Sakurajima in Japan

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Op donderdag 26 januari 2012 13:46 schreef Iwanius het volgende:

[..]

En waarom is dat,en heeft het directe gevolgen voor ons in Nederland?

桜島ライブカメラ 2012-11-12 04-13 X1HD Volcano Sakurajima

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November 11, 2012 - JAPAN - The Sakurajima volcano in Japan continues to show elevated activity: During the 9th of November, there were 4 moderate explosions with ash plumes rising to 8-13,000 ft (2.4-4 km) altitude.

While the volcano has only had about 1 explosion per day from the 5th to the 7th of November, Sakurajima has been very active since the 8th, with at least 6 moderate explosions recorded during the past 24 hours. A large one this morning at 06:27 GMT produced an ash plume reaching 13,000 ft (4.3 km) altitude. Sakurajima is presently in constant (persistant) activity. Its ongoing typical activity range from strong strombolian to large ash explosions every 4-24 hours. The volcano is located across Kagoshima Bay only 8 km east of the city of Kagoshima with a population of half a million.

Geologic Summary: Sakurajima, one of Japan's most active volcanoes, is a post-caldera cone of the Aira caldera at the northern half of Kagoshima Bay. Eruption of the voluminous Ito pyroclastic flow was associated with the formation of the 17 x 23-km-wide Aira caldera about 22,000 years ago. The construction of Sakurajima began about 13,000 years ago and built an island that was finally joined to the Osumi Peninsula during the major explosive and effusive eruption of 1914. Activity at the Kita-dake summit cone ended about 4,850 years ago, after which eruptions took place at Minami-dake. Frequent historical eruptions, recorded since the 8th century, have deposited ash on Kagoshima, one of Kyushu's largest cities, located across Kagoshima Bay only 8 km from the summit. The largest historical eruption took place during 1471-76.

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Op zaterdag 6 april 2013 10:00 schreef downgrade het volgende:
Mount Karangetang erupts in Indonesia

http://news.xinhuanet.com(...)4/06/c_132287863.htm

7/21/2013 -- Volcanic Eruption at Sakurajima (Japan) w/ Static Discharge Lightning

Eruption @ Sakurajima Volcano Japan 2013-07-18

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A strong vulcanian explosion occurred last night (21st July) at 11:02 GMT (20:02 local time), following several hours of near complete calm at the volcano. A loud cannon-shot bang accompanied the explosion, which generated a large mushroom cloud that reached 12,000 ft (3.7 km) altitude and engulfed the NE half of the Sakurajima peninsula and was followed by several smaller ones within about half an hour.

The volcano and much of the surrounding areas remained under the ash plume for several hours until it started to clear up again. In the hours after the explosion, the Showa crater continued to emit ash plumes in often near-continuous pulses, sometimes reaching several 100 m height, but with no visible incandescence or audible sounds.

Sakurajima eruptions time-lapse video 4 Sep 2013

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A moderately large vulcanian explosion occurred this morning, producing significant fallout of lapilli and small bombs in several kilometers distance. Cars parked at the Arimura Lava observatory observation point to the south of the volcano were damages and windshields broken, at a distance of about 4 km. There are no reports of injuries to people.
The ash plume from the eruption rose to approx. 12,000 ft (3.6 km) elevation, i.e. about 2.5 km km height. In itself, today's explosion is not even among the largest that have occurred in the past months, but the volcano clearly continues to be in a state of elevated activity when seen on a long-term average.

In a recent interview with Radio New Zealand, volcanologist Masato Iguchi mentions that the volcano might be heading for a larger eruption comparable to that of 1914:
“The magma level deep within the volcano is back to about 90% of what it was before the 1914 eruption. So we do have to worry about a big eruption in the long term”.

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After a short phase of weaker activity, the volcano began to erupt more violently yesterday with a series of powerful explosions that sent ash plumes up to 15,000 ft (4,5 km). Near-constant ash emissions have been taking place from the Showa crater.

Sakurajima volcano activity 24 Nov 2013 - vulcanian explosions and ash emissions

Sakurajima 11 24 2013 12:44am "1800m 804th explosion"