Jsobe

Initial Outline/Likley Sources

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

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

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

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

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

• 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