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earthstory:

#Volcanofriday part 2Earlier today we covered the initiation of an eruption in Iceland. On the other side of the world, an eruption that is much more serious also is unfolding as I type this. This ash cloud is pouring out of the volcano known as Tavurvur on the island of New Britain, in the nation of Papua New Guinea.Tavurvur is part of a much larger volcanic complex known as the Rabaul Caldera that sits at the far northeastern tip of New Britain. This caldera is the remnants of several large volcanic explosions, the most recent of which took place 1400 years ago. A caldera is a giant hole in the ground; when a large magma chamber beneath the Earth’s surface empties during an eruption, it leaves empty space and the rocks above the magma chamber collapse downward, forming a huge crater in the ground.The Rabaul caldera is about 8 x 14 kilometers in size. On its southeastern slope, the rim of this caldera has been breached by the Pacific Ocean, flooding the caldera center and creating a natural harbor, protected from the open ocean by the eastern and northern walls of the caldera.This setup, a protected harbor, is a solid place for economic activity. By the early 1990’s, about 50,000 people lived on the coastline of this harbor, but the volcano had something to say about that.Calderas don’t die when they erupt. It can take thousands of years for their magma chambers to rebuild, but the magma supply doesn’t shut off after large eruptions. Typically, small volcanoes will begin growing on the edges of the caldera what is known as the resurgent phase of caldera activity. Tavurvur is one of these volcanoes. In 1994 it erupted simultaneously with another cone known as Vulcan on the volcano’s rim, decimating the area. Thankfully, the population was mostly evacuated the night before the eruption as earthquakes gave an early warning, leading to only 5 deaths, but today the population of the area today is a small fraction of what it was before these eruptions.Tavurvur rumbled to life again today, sending ash clouds high into the air and producing fountains of lava. There is video of the eruption up at our blog,http://the-earth-story.com/ This volcano is a direct hazard to many more people on the ground than the current eruption in remote Iceland, and has also caused aviation alerts and forced the redirection of some flights due to ash in the air.-JBBImage credit: Oliver Bluett/AFPhttp://www.washingtonpost.com/news/morning-mix/wp/2014/08/29/photos-in-papua-new-guinea-mount-tavurvur-explodes-in-spectacular-style/Read more:http://volcano.oregonstate.edu/oldroot/volcanoes/rabaul/rabaul.htmlhttp://www.volcanodiscovery.com/rabaul-tavurvur.htmlhttp://abcnews.go.com/International/papua-guineas-tavurvur-volcano-erupts/story?id=25171482http://www.theguardian.com/world/2014/aug/29/papua-new-guinea-volcano-erupts-diverting-some-international-flights?cmp=wp-pluginhttp://www.wired.com/2008/10/volcano-profile-rabaul/

earthstory:

#Volcanofriday part 2

Earlier today we covered the initiation of an eruption in Iceland. On the other side of the world, an eruption that is much more serious also is unfolding as I type this. This ash cloud is pouring out of the volcano known as Tavurvur on the island of New Britain, in the nation of Papua New Guinea.

Tavurvur is part of a much larger volcanic complex known as the Rabaul Caldera that sits at the far northeastern tip of New Britain. This caldera is the remnants of several large volcanic explosions, the most recent of which took place 1400 years ago. A caldera is a giant hole in the ground; when a large magma chamber beneath the Earth’s surface empties during an eruption, it leaves empty space and the rocks above the magma chamber collapse downward, forming a huge crater in the ground.

The Rabaul caldera is about 8 x 14 kilometers in size. On its southeastern slope, the rim of this caldera has been breached by the Pacific Ocean, flooding the caldera center and creating a natural harbor, protected from the open ocean by the eastern and northern walls of the caldera.

This setup, a protected harbor, is a solid place for economic activity. By the early 1990’s, about 50,000 people lived on the coastline of this harbor, but the volcano had something to say about that.

Calderas don’t die when they erupt. It can take thousands of years for their magma chambers to rebuild, but the magma supply doesn’t shut off after large eruptions. Typically, small volcanoes will begin growing on the edges of the caldera what is known as the resurgent phase of caldera activity. Tavurvur is one of these volcanoes. In 1994 it erupted simultaneously with another cone known as Vulcan on the volcano’s rim, decimating the area. Thankfully, the population was mostly evacuated the night before the eruption as earthquakes gave an early warning, leading to only 5 deaths, but today the population of the area today is a small fraction of what it was before these eruptions.

Tavurvur rumbled to life again today, sending ash clouds high into the air and producing fountains of lava. There is video of the eruption up at our blog,http://the-earth-story.com/ 

This volcano is a direct hazard to many more people on the ground than the current eruption in remote Iceland, and has also caused aviation alerts and forced the redirection of some flights due to ash in the air.

-JBB

Image credit: Oliver Bluett/AFP
http://www.washingtonpost.com/news/morning-mix/wp/2014/08/29/photos-in-papua-new-guinea-mount-tavurvur-explodes-in-spectacular-style/

Read more:
http://volcano.oregonstate.edu/oldroot/volcanoes/rabaul/rabaul.html
http://www.volcanodiscovery.com/rabaul-tavurvur.html
http://abcnews.go.com/International/papua-guineas-tavurvur-volcano-erupts/story?id=25171482
http://www.theguardian.com/world/2014/aug/29/papua-new-guinea-volcano-erupts-diverting-some-international-flights?cmp=wp-plugin
http://www.wired.com/2008/10/volcano-profile-rabaul/

Notes
265
Posted
17 hours ago

beatsbythee:

Be with someone who makes you feel the same way you do when you see your food coming at a restaurant.

Notes
105
Posted
5 days ago

(via moeyhashy)

Allah hears when He is called and answers when He is invoked so humble yourself before Him and ask of Him sincerely.
Notes
5
Posted
1 week ago

(via seuol)

(Source: moeyhashy, via banana-soul)

How beautiful would it be to find someone who’s in love with your mind.
Notes
625757
Posted
1 week ago
dysfunctunal:

headbangingdisaster:

banana-soul:

This is me, my name is Kelli and I’m 17-years-old, battling cancer for the third time. I have less than a year to live and the only thing I want to do more than anything before I die is meet Ellen. She’s my sunshine. She’s the reason I wake up everyday and I watch her show every morning. She just radiates so much joy and happiness and she gives me hope. It’s really my dream to be able to meet her. Unfortunately, due to a long waiting list, the Wish Foundation told me I probably wouldn’t be able to meet her within my short timeline. But I see miracles happen all the time.. therefore I won’t give up on my dream. I thought that maybe if this gets enough attention, someone from the Ellen Show would come across it, or maybe even Ellen herself will know of me and my wish to meet her. Please, help me make my wish come true.  

HELP HER

GUYS KEEP REBLOGGING

dysfunctunal:

headbangingdisaster:

banana-soul:

This is me, my name is Kelli and I’m 17-years-old, battling cancer for the third time. I have less than a year to live and the only thing I want to do more than anything before I die is meet Ellen. She’s my sunshine. She’s the reason I wake up everyday and I watch her show every morning. She just radiates so much joy and happiness and she gives me hope. It’s really my dream to be able to meet her. Unfortunately, due to a long waiting list, the Wish Foundation told me I probably wouldn’t be able to meet her within my short timeline. But I see miracles happen all the time.. therefore I won’t give up on my dream. I thought that maybe if this gets enough attention, someone from the Ellen Show would come across it, or maybe even Ellen herself will know of me and my wish to meet her. Please, help me make my wish come true.  

HELP HER

GUYS KEEP REBLOGGING

(via freeyourssoul)

Notes
396785
Posted
1 week ago
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