Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2018        Go!    
 
 
June 21, Thursday 2018 11:43 AM       

       HEADLINES: Cheriyan Philip to be Mission coordinator                                              Chengannur by-election: Congress man arrested for spreading controversial phone message                                              Agri budget to double farm income by 2022: PM Modi                                              Governor's rule imposed in J-K                                              18K banks, post offices have Aadhaar facility: UIDAI                                              Swaraj discusses bilateral trade, investment with Luxembourg PM                                              India dismisses UN report branding terrorists as "leaders"                                              China 'colonising' terror-supporting Pak - EFSAS                                              My hardest day in cricket: Paine post England drubbing                                              Kaumudi Facebook
       SCI&TECH Next Article: Docs reconstruct tongue with flesh from thigh  
       Water exists deeper in Earth than thought: study
 
         Posted on :18:49:36 Nov 22, 2016
   
A A
       Last edited on:18:49:36 Nov 22, 2016
         Tags: Water, Earth, thought, study
 
WASHINGTON: Water exists far deeper in the Earth - about 400 to 600 kilometres into the mantle - than previously believed, researchers including one of Indian origin have found.
 
A mineral far below the surface of the Earth may hold the key to how much water is stored in our planet, researchers said.
 
Mainak Mookherjee, Assistant Professor at Florida State University in the US and Andreas Hermann from the University of Edinburgh in the UK estimate that in the deep Earth - roughly 400 to 600 kilometres into the mantle - water is stored and transported through a high-pressure polymorph of the mineral brucite.
 
Previously, scientists thought brucite was not thermodynamically stable that deep in the Earth.
 
"This opens up a Pandora's Box for us. We did not think water could be stored by hydrous minerals such as brucite. But now that we know it is there, we need to figure out how much water could be effectively stored inside it," Mookherjee said.
 
Based on high-pressure experimental studies, scientists knew minerals that transported water - such as brucite - had limited stability and that these minerals decomposed in the deep Earth.
 
As they decomposed, they released the water, which is recycled back to surface via volcanic activity.
 
However, this discovery of a new high-pressure phase of brucite indicates that water could be efficiently transported to far deeper realms without decomposition.
"We had to do quantum-mechanical calculations on thousands of potential structures until we found the one we now reported," Hermann said.
 
"It really is remarkable that such a well-studied mineral as brucite has something so surprising to offer," he said.
 
Water plays a critical role in sustaining geological activity below the Earth's surface. Scientists have been working for years to quantify the oceans' worth of water that lay hidden in the crust and mantle.
 
"For the activity of the planet, deep Earth water is equally important to water on the surface," Mookherjee said.
 
"My goal is to understand how much water is stored in the deep Earth. If the planet becomes dry on the inside, the planet dies because geodynamic activity within the planet ceases," he said.
 
The research was published in the journal PNAS.
A A
       SCI&TECH
Next Article: Docs reconstruct tongue with flesh from thigh
 
 
SCI&TECH HEADLINES
Yoga helps against non-communicable diseases: WHO  
Spironolactone can help prevent acne: Study  
Older Amazonian forests help regulate global climate  
Goal conflict linked to depressive symptoms  
A new world: Top 10 new species for 2018  
Beat the risk of frailty with healthy heart  
Twitter to hide trolls that hurl abuse: Twitter CEO  
Fortnite is finally coming to Android  
This test could detect signs of pancreatic cancer  
Aliens exist but may be in parallel Universe: Study  
This is your heart on nitric oxide  
Is your kid's heart clock ticking right?  
Do at-risk adolescents show depressive symptoms on social media?  
NASA launches Insight spacecraft to Mars for deepest dig yet  
Daily intake of this drug can cause certain cancers in men  
A new weapon against epilepsy  
Hail stone weighing three kg sign of climate change: Expert  
PMSing? Could be because of alcohol!  
Social media firms given a week to better protect kids  
The stronger you are, the healthier your brain is  
NASA may soon identify 2,400 alien planets  
What triggers depression among adults?  
Turn your hobbies into part-time job opportunities with these apps  
Apple launches special RED Edition for iPhone 8, 8 Plus  
Humanity‚Äôs first flight to Sun to launch in July: NASA  
 
Do you think electric bus will be a success in Kerala?
Yes
 
No
 
No opinion
 
 
 
Home Kerala India World Business Sports Sci&Tech Education Automobile CityNews Movies Environment Letters 
© Copyright keralakaumudi Online 2011  |  Reproduction in whole or in part without written permission is prohibited.
Head Office Address: Kaumudi Buildings, Pettah P.O, Trivandrum - 695024, India.
Online queries talk to Deepu Sasidharan, + 91 98472 38959 or Email deepu[at]kaumudi.com
Customer Service -Advertisement Disclaimer Statement   |  Copyright Policy