Bookmark Kaumudi Online  Bookmark this site  Editor@Kaumudi  |  Marketing  Print Advt rates  |  Calendar 2012        Go!    
 
 
February 26, Sunday 2017 8:13 PM       

       HEADLINES: Attack on actress: Prime accused brought to Coimbatore for evidence collection                                              Kunhalikutty selected League national general secretary                                              Afghanistan: ISIS recruit from Kerala killed in drone strike                                              Attack on actress: Probe should be handed over to trusted agency                                              Two killed in bus-car collision                                              South Indian comedian Thavakkala dies                                              India needs more scientists to harness technology: Modi                                              Gujarat ATS arrests suspected ISIS operatives                                              PIA had seven passengers standing during Karachi-Madina flight                                              Kohli, Ashwin unmoved in latest ICC Test Rankings                                              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
NASA may put astronauts on deep space test flight  
Juno to remain in current orbit around Jupiter: NASA  
US man receives new face from donor  
Over 100 new potential planets spotted  
ISRO to launch record 104 satellites on Feb 15  
Now, video-makers can live stream on YouTube  
Music, drugs stimulate same part of brain: study  
Facebook adds tool for helping in times of crisis  
Moon may have formed from collision of tiny 'moonlets'  
China to set up world's highest altitude telescopes in Tibet  
NASA to launch two robotic probes to study early solar system  
After Mars, ISRO eyes Venus and Jupiter  
New, rare galaxy spotted over 359 mln light-years away  
Coconut sized tumor removed from Iraqi woman's head  
Bacteria-powered battery built on single sheet of paper  
'Human-made objects on Earth amount to 30 trillion tonnes'  
Element 117 officially named 'Tennessine'  
Predatory bacteria may wipe out 'superbugs': study  
New potent vaccine may spell end for HIV  
Water exists deeper in Earth than thought: study  
Docs reconstruct tongue with flesh from thigh  
Why wounds take longer to heal with age decoded  
WhatsApp launches video calling to take on Google Duo, Skype  
Molecules on phone can unveil your lifestyle: study  
Chandrayaan-2 mission: ISRO conducts tests for Moon landing  
 
Do you suspect controversy behind attack on the actress?
Yes
 
No
 
Don't kow
 
 
 
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