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Yikes - Krakatau volcano - level raised to three - showing major activity

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posted on Apr, 28 2009 @ 12:24 PM
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A Discovery Channel vid on the "Child of Krakatau" Anak - volcano - link:


www.truveo.com...

There are many vids about Kraktoa there ( it is spelled both ways, from my researching).




posted on Apr, 30 2009 @ 11:59 AM
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Update on volcano


KRAKATAU Indonesia 6.102°S, 105.423°E; summit elev. 813 m

According to a news article on 29 April, some residents on western Java (Lampung) near Krakatau have evacuated due to their observations of increased volcanic activity during the previous week. Observers reported loud blasts, lava flows, and ash plumes that rose 200-800 m above the Anak Krakatau crater. Pilots had also reported seeing ash plumes. A volcanologist from CVGHM stated that the activity did not merit an increase in the Alert level. The Alert Level remained at 2 (on a scale of 1-4).

Geologic Summary. Renowned Krakatau volcano lies in the Sunda Strait between Java and Sumatra. Collapse of the ancestral Krakatau edifice, perhaps in 416 AD, resulted in a 7-km-wide caldera. Remnants of this volcano formed Verlaten and Lang Islands; subsequently Rakata, Danan and Perbuwatan volcanoes were formed, coalescing to create the pre-1883 Krakatau Island. Caldera collapse during the catastrophic 1883 eruption destroyed Danan and Perbuwatan volcanoes, and left only a remnant of Rakata volcano. The post-collapse cone of Anak Krakatau (Child of Krakatau), constructed within the 1883 caldera at a point between the former cones of Danan and Perbuwatan, has been the site of frequent eruptions since 1927.


They say above a level 2, but from other places, I have seen the level was raised to 3.



posted on May, 12 2009 @ 10:47 AM
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Latest update

link: www.volcanolive.com...


Wednesday 6th May 2009
Krakatau Volcano, Indonesia
Eruptions are continuing at Krakatau volcano in Indonesia from a crater on the SW side of the cone. A volcanic ash advisory from Darwin VAAC reported ash to 10,000 drifting NW of the volcano. Today the level of alert at Krakatau was raised from Waspada (Level 2) to Siaga (Level 3), out of a maximum level 4. A renewed period of eruptions began at Krakatau on 19th March 2009, when 19 explosions were recorded. Between 1-25 April 2009 there have been 4060 explosions. Number of explosion earthquakes measured are 30 April 229, 1 May 324, 2 May 318, 3 May 250, 4 May 403, 5 May 371, and 6 May 132 (until midday). Shallow volcanic earthquakes, and tremor have been recorded. Visual observations from Rajabasa District in Sumatra in April reported ash emissions from 50-1000 m above the summit. From 1-24 April booming noises were heard from Sumatra 174 times, 83 times from 25-29 April. No sounds were heard between 30th April and 6th May. Incandescent material and ash are being emitted to a radius of 500 m from the crater. Pyroclastic flows may reach a distance of 700 m from the crater. Ash is falling 5 km from the volcano. Requests from the Indonesian Directorate of Volcanology and Geological Hazard Mitigation request people stay at least 2 km from the volcano. Local communities are still allowed to fish outside the 2 km danger zone radius. Communities in the coastal province of Banten and Lampung are requested to remain calm and not fear a tsunami.



[edit on 12-5-2009 by questioningall]



posted on May, 16 2009 @ 12:29 PM
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reply to post by questioningall
 


I watched a History Channel program about Krakatau a couple weeks ago.
I bring the following to your attention not knowing if you are aware...

One thing the program stressed is the volcano's position along the "ring of fire". An undefined term, geologically, was stated often: "Kink"*.
As in, Krakatau lies above a "kink" in the ring of fire, which allows the magma, from a deeper source, a conduit to the surface. The deeper magma, I recall being said, is more siliceous in composition. As the silica content increases, the magma is more apt to form a plug in the conduit, which leads to increased pressure, and a more violent eruption.

* All well, and good, but, the term 'kink', from this geologist's point of view, can mean anything from a gentle bend, to a full blown "ironed pleat". Regardless, it represents a weaker zone along the ring of fire.

It would be interesting to research other volcanoes along the ringo'fire
to determine whether they are associated with such a "kink" phenomenon.
Time permitting, I will endeavor to do so. Should provide an interesting investigation, if nothing else.




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