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Was the moon magnetized by impact plasmas?

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  • معلومة اضافية
    • Publisher Information:
      American Association for the Advancement of Science 2020
    • نبذة مختصرة :
      The crusts of the Moon, Mercury, and many meteorite parent bodies are magnetized. Although the magnetizing field is commonly attributed to that of an ancient core dynamo, a longstanding hypothesized alternative is amplification of the interplanetary magnetic field and induced crustal field by plasmas generated by meteoroid impacts. Here, we use magnetohydrodynamic and impact simulations and analytic relationships to demonstrate that although impact plasmas can transiently enhance the field inside the Moon, the resulting fields are at least three orders of magnitude too weak to explain lunar crustal magnetic anomalies. This leaves a core dynamo as the only plausible source of most magnetization on the Moon.
    • الموضوع:
      Journal Article
    • Availability:
      Open access content. Open access content
      http://creativecommons.org/licenses/by/4.0
    • Other Numbers:
      LC0 oai:espace.curtin.edu.au:20.500.11937/81358
      Oran, R. and Weiss, B. and Shprits, Y. and Miljkovic, K. and Toth, G. 2020. Was the moon magnetized by impact plasmas? Science Advances. 6 (40) Article No. eabb1475.
      10.1126/sciadv.abb1475
      1202603971
    • Contributing Source:
      CURTIN UNIV OF TECH
      From OAIster®, provided by the OCLC Cooperative.
    • الرقم المعرف:
      edsoai.on1202603971
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