The Naked Scientists
Toggle navigation
Login
Register
Podcasts
The Naked Scientists
eLife
Naked Genetics
Naked Astronomy
In short
Naked Neuroscience
Ask! The Naked Scientists
Question of the Week
Archive
Video
SUBSCRIBE to our Podcasts
Articles
Science News
Features
Interviews
Answers to Science Questions
Get Naked
Donate
Do an Experiment
Science Forum
Ask a Question
About
Meet the team
Our Sponsors
Site Map
Contact us
User menu
Login
Register
Search
Home
Help
Search
Tags
Member Map
Recent Topics
Login
Register
Naked Science Forum
Non Life Sciences
Geology, Palaeontology & Archaeology
geodynamo
« previous
next »
Print
Pages: [
1
]
Go Down
geodynamo
2 Replies
7954 Views
0 Tags
0 Members and 1 Guest are viewing this topic.
frethack
(OP)
Sr. Member
394
Activity:
0%
geodynamo
«
on:
21/06/2007 09:10:57 »
I know this question hasnt been definitively answered yet, but I would like to read any research that anyone can provide. Ive searched the database at my local library (peer reviewed journal database) but information is not very forthcoming.
Does the friction of liquid metals in the outer core create an electrical field that is turned magnetic by the influence of the Suns magnetic field, or do the created electrostatic charges wrap around the solid inner core through possibly an internal coriolis effect and turn the inner core into a massive electromagnet? Im sure there are other theories as well. Im fairly sure that the Curie point only strips natural magnetism, and I know that it is thought that at least the inner core rotates at a slightly faster pace than the exterior portions of the planet, so it seems that there would be some sort of preferred order (latitudinal) of the electric current. Ive asked two Geo professors in my schools department (one who is a geophysicist) and neither of them seems to know of much new research in that area. Ive heard of one school (cant remember which...saw it on the Science channel) that is working with liquid metals to attempt a simulation of the outer core and theyve been able to create a weak electric field, but nothing that also involves the inner core as well.
frethack
Logged
frethack
"Flying is learning how to throw yourself at the ground and miss."
- Douglas Adams
edward2007
Guest
geodynamo
«
Reply #1 on:
21/06/2007 14:23:57 »
Some websites on the subject:
http://www.news.wisc.edu/newsphotos/geodynamo.html
http://www.dr7.cnrs.fr/rubrique.php3?id_rubrique=585
http://www.psc.edu/research/graphics/gallery/geodynamo.html
http://istp.gsfc.nasa.gov/earthmag/dynamos2.htm
Enjoy, Edward.
Logged
frethack
(OP)
Sr. Member
394
Activity:
0%
geodynamo
«
Reply #2 on:
21/06/2007 18:21:15 »
Thank you edward2007. UW-M was indeed the school that I had seen highlighted, and, fortunately, I have seen the computer models that were referred to on the NASA site. Unfortunately, my french is very poor, and relegated mostly to "croissant" and "merde", so I was not able to glean any information from there. I guess what Im looking for are peer reviewed articles describing physical experiments that might be backed up with computer models, but that dont use modeling as their entire basis.
«
Last Edit: 21/06/2007 19:10:00 by frethack
»
Logged
frethack
"Flying is learning how to throw yourself at the ground and miss."
- Douglas Adams
Print
Pages: [
1
]
Go Up
« previous
next »
Tags:
There was an error while thanking
Thanking...