A study by computer simulation of the generation and evolution of the Earth`s magnetic field

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Description

Until recently very little has been known about the maintenance of the Earth`s magnetic field. The general consensus was that some type of convective motion edits in the Earth`s liquid iron alloy core that is affected by rotational forces in a way that continually generates new magnetic field to replace that which diffuses away. Magnetic-field reversals and secular variation have long been measured but no theory existed to explain these phenomena. To gain an understanding of the basic physical mechanisms of the ``geodynamo,`` we produced the first self-consistent computer simulation of convection and magnetic field generation in a rotating three-dimensional ... continued below

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5 p.

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Glatzmaier, G.A.; Hollerbach, R. & Roberts, P.H. December 31, 1995.

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Description

Until recently very little has been known about the maintenance of the Earth`s magnetic field. The general consensus was that some type of convective motion edits in the Earth`s liquid iron alloy core that is affected by rotational forces in a way that continually generates new magnetic field to replace that which diffuses away. Magnetic-field reversals and secular variation have long been measured but no theory existed to explain these phenomena. To gain an understanding of the basic physical mechanisms of the ``geodynamo,`` we produced the first self-consistent computer simulation of convection and magnetic field generation in a rotating three-dimensional spherical fluid shell as an anologue to the Earth`s convective dynamo. This is a final report of a three-year Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL).

Physical Description

5 p.

Notes

OSTI as DE96005600

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  • Other Information: PBD: [1995]

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  • Other: DE96005600
  • Report No.: LA-UR--95-4184
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/200713 | External Link
  • Office of Scientific & Technical Information Report Number: 200713
  • Archival Resource Key: ark:/67531/metadc668259

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Creation Date

  • December 31, 1995

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Feb. 29, 2016, 7:42 p.m.

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Glatzmaier, G.A.; Hollerbach, R. & Roberts, P.H. A study by computer simulation of the generation and evolution of the Earth`s magnetic field, report, December 31, 1995; New Mexico. (digital.library.unt.edu/ark:/67531/metadc668259/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.