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    Viscous demagnetization and the longevity of paleomagnetic polarity messages

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    WHOI 81-52.pdf (2.126Mb)
    Date
    1981-06
    Author
    Denham, Charles R.  Concept link
    Metadata
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    Citable URI
    https://hdl.handle.net/1912/10263
    DOI
    10.1575/1912/10263
    Keyword
     Paleomagnetism; Sediments 
    Abstract
    Viscous decay of magnetic polarity messages in rocks is slowed 3- to-6 fold by the reversing nature of the geomagnetic field, compared with the effect expected in a field that is constantly polarized oppositely to the original remanence. The process is studied analytically and numerically for the known geomagnetic polarity sequence, as well as for simulated sequences having constant-length and Poisson-distributed lengths of polarity intervals. For equal average-interval lengths, the random Poisson reversing process causes more rapid decay than does the periodic reversing process.
    Description
    Also published as: Geophysical Research Letters 8 (1981): 137-140
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    • Geology and Geophysics (G&G)
    • WHOI Technical Reports
    Suggested Citation
    Denham, C. R. (1981). Viscous demagnetization and the longevity of paleomagnetic polarity messages. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/10263
     

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