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The Earth Is Swallowing the Ocean

From Popular Mechanics "data-responseid =" 31 "> From Popular Mechanics <p class =" canvas-atom canvas text Mb (1.0em) Mb (0)…

From Popular Mechanics “data-responseid =” 31 “> From Popular Mechanics

<p class =” canvas-atom canvas text Mb (1.0em) Mb (0) – sm Mt (0.8em) – sm “type Nature reveals some mysterious complexities about our planet’s water cycle-in particular, how much ocean water gets trapped in the earth’s interior via plate tectonics. According to the study, about three times as much as we thought. ” data-reaction = “32”> A new study published in the journal Nature reveals some mysterious complexities about our planet’s water cycle-in particular, how much ocean water gets trapped in the earth’s interior through plate tectonics.

The earth’s mantle consists of an interlocking puzzle of tectonic plates. Når disse plader kolliderer og en slides beneath den anden, bliver vandet trukket ind i den subduktionszone. Door een combinatie van warmte en druk wordt het water chemisch omgezet in “wet rocks”, een waterige minerale die wordt vergrendeld binnen de plaat en er meer diep in de aardcrust wordt getrokken. Douglas Wiens, Professor of Earth and Planetary Sciences at Washington University in St. Petersburg. Louis, wanted to find out just how much water has been absorbed this way.

 Photo credit: Washington University

Photo credit: Washington University

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The Source a university publication. a full year of listening to the rumblings of the Mariana and Pacific plates 20 miles below the sea floor, they found that the mantle contains four times the amount of water than formerly thought. To put this in perspective, that’s as much water as all the ocean on Earth combined. Blue planet indeed . ” data-reaction = “54”> Using seismographs placed along the trench, researchers were able to listen to underwater seismic activity and essentially map sections of the earth’s interior by “tracking the relative speeds of types of rock that have different capabilities for holding water, “According to The Source, a university publication. Efter en hel år med at lytte til rumblingene af Mariana og Pacific-pladerne 20 miles under havbunden, fandt de at mantlen indeholder fire gange vandmængden end tidligere. To put this in perspective, that’s as much water as all the ocean on Earth combined. Blue planet indeed.

<p class = “canvas-atom canvas text Mb (1.0em) Mb (0) – sm Mt (0.8em) – sm” type = “text” content = “While some trenches around the globe exhibit more faulting and others less, we can nonetheless extrapolate that they are all sucking down a heck of a lot of ocean-three times more, says Wiens, than estimated. If you think of the earth like a vacuum, what goes into must come out-or more accurately, up . Scientists believe that most of the water consumed at subduction zones gets expelled as water vapor during volcanic eruptions. ” data-reaction = “55”> While some trenches around the globe exhibit more faulting and others less, we can nonetheless extrapolate that they are all sucking down a heck of a lot of ocean-three times more, says Wiens, than estimated. If you think of the earth like a vacuum, what goes in must come out-or more accurately, up . Scientists believe that most of the water consumed at subduction zones gets expelled as water vapor during volcanic eruptions.

But here’s the rub: These recent estimates from the Washington University study reveal a strong imbalance in the intake and the outflow. Geologically speaking, the more water transferred to the mantle should mean less water on the surface. And yet, there are points out, for the past 550 million years or so, Oceans have looked much like they do now. New research in Alaskan and Central American trenches will probably shed some light on this mystery.

Whether you’re fascinated by the slow geological grind or not, it’s a mystery worth unravelling. Understanding how water works on, in and around our planet will not only illuminate how we live here on Earth now, but how we might survive on some other planet. Someday.

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