The continuation of many previous quests to drill into the Earth's Mantle will begin shortly in the Indian Ocean. A team of scientists and engineers led jointly by Henry Dick of the Woods Hole Oceanographic Institution, and Chris MacLeod from Cardiff University will use the scientific drilling ship JOIDES Resolution to bore 2km into the ocean floor in the first of a series of three planned missions to the South-West Indian Ridge. The ultimate aim of the mission is to find and understand the "Moho Boundary", this is a point in the earth's crust where the seismic waves from earthquakes abruptly change their speed of travel. The current explanation of the Moho boundary is a simple change in rock types from the crust to the mantle, however, this operates on untested assumptions about the structure of the Earth's crust and mantle. The team have a theory that the mantle structure is more complicated, and that ingress of ocean water can cause large structural changes. This is the key theory they plan to test with this drilling mission.
"The Moho is pretty uniform everywhere across the ocean basins, and because of that everyone has assumed that the ocean crust is very uniform and therefore, by inference, very simple," explains Prof MacLeod. "But if we're right here, it changes the game completely. If the Moho seismic boundary is actually an alteration boundary from water penetration into the mantle, it means we know a lot less about the ocean crust than we did."
Further information:
Expedition Site: http://iodp.tamu.edu/scienceops/expeditions/indian_ridge_moho.html
Nature Article: http://www.nature.com/news/quest-to-drill-into-earth-s-mantle-restarts-1.18921
BBC News: http://www.bbc.co.uk/news/science-environment-34967750
(Score: 2, Touché) by Aurean on Thursday December 03 2015, @08:44PM
We think water ingress may change the mantle - so let's drill a hole in the crust, right nuder an ocean.
What's the worst that could happen?
(Score: 3, Funny) by edIII on Thursday December 03 2015, @08:50PM
We drain the oceans accidentally? Otherwise, the worst the can happen is a broken drill bit, or somebody goes overboard I think.
Technically, lunchtime is at any moment. It's just a wave function.
(Score: 2) by EvilSS on Thursday December 03 2015, @09:27PM
My hollow earth theory will finally be vindicated!
(Score: 1) by xav on Friday December 04 2015, @03:26AM
No, since the earth won't be hollow anymore after this experiment.
On the other hand, the sea level rise problem wil be solved for centuries.
(Score: 3, Funny) by Anonymous Coward on Friday December 04 2015, @11:25AM
But we will have other problems, after the earth rotation hamster is drowned and can no longer keep the earth rotating.
(Score: 1) by CHK6 on Thursday December 03 2015, @09:42PM
What's the worst thing? Another Syfy feature show on unleashing some underwater creature from the drilling platform to battle megla-tornado-shark.
(Score: 2) by Phoenix666 on Friday December 04 2015, @06:15PM
Sharknado [imdb.com] is one of the finest film franchises ever made, you insensitive clod.
Only recently surpassed by Kung Fury [imdb.com].
Washington DC delenda est.
(Score: 0) by Anonymous Coward on Friday December 04 2015, @09:54AM
Accidentally triggering an ancient extraterrestrial distress signal sender, which causes some hostile alien race to approach earth to rescue the presumed endangered aliens, and then when they don't find those aliens and come to the conclusion that the humans must have killed them, destroy humanity in retaliation?
Enrage some ancient god who gave some long-forgotten ancestor of modern humans the long-forgotten command hat the floor of the Indian Ocean has to be kept alone?
Hit a spacetime anomaly hidden under the ocean floor, causing the opening of a wormhole into another universe populated by hostile beings?
(Score: 2) by Phoenix666 on Friday December 04 2015, @06:11PM
I see it as an experiment in tube-worm farming. Pierce holes in the ocean floor, see vents form around which tube worms colonize, harvest, profit! They could market the product as "tube steak."
Washington DC delenda est.