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Initial Outline/Likley Sources

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Article Title: Inner Core Super-Rotation (New article)


Introduction:

  • Inner core specs
    • Basic description of compostion
    • Size
    • State
  • Rotation of the Earth
  • Rotation of the inner core with respect to the Earth
  • Mention that it affects geodynamo and cycling


Evidence for inner core super rotation

  • History of the discovery of inner core rotation
    • Unitl 15 years ago, it was not thought the inner core was rotating at a different speed
  • Geodynamo
  • Convection

Seismic velocity data support

  • Quantiative support
  • Eastern vs western velocity discrepancies
    • Why this suggests slower speed of rotation than before


Specific Facts

  • Specific speed
  • Unknowns in determining speed
  • Other facts that can be known through determing the speed


Current Scientific Conclusion

  • Slower than thought before
  • Could be large changes in speed
  • Could be more dynamic, in speed and structure
  • Must likely be rotating to keep current models previously mentioned (geodynamo and convection)

Possible Images

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Source 1, Figure 1 (not sure about copyright?)

https://commons.wikimedia.org/wiki/File:Earth-cutaway-schematic-english.svg (from wiki, to the right)

Source 4, Figures 1-4 (also not sure about copyright?)

Layers of Earth


Sources

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  1. https://www.nature.com/articles/ngeo1091
  2. http://spinlab.ess.ucla.edu/wp-content/uploads/2012/03/Aurnou-etal-ICRotMech-GRL96.pdf
  3. http://science.sciencemag.org/content/328/5981/1014 (not directly related, about lopsidedness of core)
  4. https://www.ldeo.columbia.edu/~richards/my_papers/Science_ICrot_Aug05.pdf

+ already listed sources below

Article Selection and Comments

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Article: Inner Core, adding information about inner core super rotation

  • Current information: three sentances about the inner core rotation
  • Very little cited material listed about it
  • Options
    • Add to/edit paragraphs (2)
    • New subsection (1) - enough information to do this I think
    • New Section (3)

Alternative Article: Earth's Rotation

  • Has no mention of inner core rotation
  • Would have to create a whole sub-section
  • Much more difficult and harder to tie together

Sources

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Sources currently on wiki page doi:10.1029/96GL03258 and https://academic.oup.com/gji/article/152/3/509/688146

Other:

http://science.sciencemag.org/content/274/5294/1887

https://www.nature.com/articles/382221a0

Article evaluation

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  • Looks good
  • Accurate
  • More depth? Other subsections?
  • Article is neurtral
  • Not biased
  • A few of the sources are questionable
  • Only a few people have written about the topic
  • Critical of the article

Reference

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