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View Full Version : The Core - for real



ToSeek
2003-May-14, 08:07 PM
Journey to centre of Earth proposed (http://www.newscientist.com/news/news.jsp?id=ns99993730)

And I bet you thought it was just a movie!

Glom
2003-May-14, 08:09 PM
Sounds like the project has a few obstacles to overcome.

SKY
2003-May-14, 08:36 PM
The wacky scheme would need the world's largest nuclear bomb and enough iron to fill 13 large concert halls.

Oh god...they've gone Hollywood. :D

gethen
2003-May-14, 08:39 PM
I don't know. This sounds a lot like the set-up for a sequel to The Core doesn't it? :lol: Nuclear explosions underground starting some horrific chain reaction, send in Bruce Willis to drill down and remove the thing or die trying.

logicboy
2003-May-15, 12:44 PM
Do we have anything that can withstand that type of pressure? carbon nanotubes maybe

kucharek
2003-May-15, 12:51 PM
I guess, it will be easier to develop a magnetic resonance tomograph that can take tomographs of the whole earth. Lem did this in "Fiasco".

Harald

kilopi
2003-May-15, 03:48 PM
I guess, it will be easier to develop a magnetic resonance tomograph that can take tomographs of the whole earth. Lem did this in "Fiasco".

Argos's CNN link in the other thread on this topic (http://www.badastronomy.com/phpBB/viewtopic.php?t=5349) mentions the current network of seismic stations that have been engaged in Earth tomography for over twenty years--but it's seismic, not magnetic, tomography. They mention that there is a need for stations at the bottom of the ocean--after all, most of the stations are on land, and as we all know, that doesn't give us very good coverage of the surface of the planet.

A few weeks ago, the philanthropist and geophysicist and former president of Texas Instruments Cecil Green (http://www.ti.com/corp/docs/company/history/green.shtml) died at the age of 102. He helped fund the International Deployment of Accelerometers, long wavelength detectors that some geophysicists have thought to be past their useful life--but weren't going to be shutdown as long as Cecil Green was alive (his wife's name was IDA). However, the largest component of the Earth's interior is the degree one, and the deployment was useless in determining that, unless detectors were placed in antipodal positions. Because most of the land on Earth is antipodal to water, that never happened.

Geophysicists often just assume that the degree one component is zero.

ToSeek
2003-May-15, 04:09 PM
Another article about the same proposal (http://abcnews.go.com/sections/scitech/World/earthcore030515.html)

beskeptical
2003-May-15, 07:01 PM
I thought the elevator to space was wacko until some real theoretical discussion papers were posted on it. This idea is just as wacko. But, I'll try to keep an open mind.

If you got to the liquid (but veeeerrrrry viscous) outer core, that would be difficult enough. But how could you possibly, given today's technology, drill into the inner core? I can't believe even nuclear explosive energy could drill into matter under that amount of pressure. For example, the explosion would have to be behind the grapefruit thing because if the nuclear device was to blow a hole for the probe to enter, the hole would collapse back in immediately after the blast.

And. frankly, I don't want deep Earth nuclear impacts until a lot of computer or test modelling shows it won't rearrange the surface.

That's my story and I'm sticking to it.