Tuesday, December 18, 2012

Earth's carbon mostly in its core | Reduction

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Earth's carbon mostly in its core

Mechanical Sample, Digital DNA, Palo Alto, California, USA
Mechanical Sample, Digital DNA, Palo Alto, California, USA by Wonderlane
License (according to Flickr): Attribution License
Excerpt:

A tiny fraction of carbon helps account for the oddly light density of Earth's iron core, a new computer simulation finds. Though the core is only 0. 1 percent to 0. 8 percent carbon, the iron ball is the largest reservoir of carbon on the planet, the study authors said. An impenetrable 1,790 miles below the planet's surface, the core is a compelling mystery. The density of pure iron is heavier than the core's observed density, which is calculated from seismic and laboratory studies. Even though the bulk of the core is iron, scientists have surmised it must contain a small amount of lighter elements such as oxygen and sulfur. Using computer simulations, researchers from the University of California, Davis, and the Chinese Academy of Sciences in Beijing tested whether Earth's most common element, carbon, also hides in the core.

People:

Qing-Zhu Yin

Overall Sentiment: 0.0898548

Relevance: 0.857132

SentimentQuote
0"We knew the density of the core, and we knew that metal iron and nickel alone couldn't account for that density," said Qing-Zhu Yin, ...
0.0115689"We knew the density of the core, and we knew that metal iron and nickel alone couldn't account for that density," said Qing-Zhu Yin, UC Davis geology professor and study co-author. "You need something lighter."
0.461355"It's about understanding the nature of the Earth," Yin said. ...
0.182251"It's about understanding the nature of the Earth," Yin said. "We're able to better understand the physical and chemical processes involved in Earth's formation."
Sentiment Stats:
  • Number of Quotes: 4
  • Aggregate Sentiment: 0.6551749
  • Mean: 0.163793725
  • Standard Deviation: 1.7320508075689

Davis

Overall Sentiment: 0

Relevance: 0.373837

Disambiguation: Politician | Governor | MilitaryPerson | PoliticalAppointer | FilmActorReferences:

Key:

  • Aggregate Sentiment is meant to be an indicator of an individual's overall sentiment.
  • The Mean is meant to be an indicator of an individual's average comment sentiment.
  • The Standard Deviation, when there are enough quotes, will indicate an individual's consistency of sentiment (i.e. a Standard Deviation of 0 would mean they were very consistent in their sentiment and 1 would mean they were very inconsistent).

Note that quote stats are likely to be meaningless beyond the aggregate score due to the tiny sample size. However, they are always provided just in case you find something useful there.

Additional Info:

Organization: National Academy of Sciences

Overall Sentiment: 0

Relevance: 0.42103

Organization: University of California

Overall Sentiment: 0

Relevance: 0.342732

Disambiguation: Location | Facility | AcademicInstitution | PeriodicalPublisher | Building | CollegeUniversity | OperatingSystemDeveloper | UniversityReferences:

Company: Twitter

Overall Sentiment: 0

Relevance: 0.316931

Disambiguation: Website | VentureFundedCompanyReferences:

Technology: simulation

Overall Sentiment: 0.104453

Relevance: 0.397441

City: Beijing

Overall Sentiment: 0

Relevance: 0.362685

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