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Eustatic sea level fluctuations induced by polar wanderIt is shown here that polar wander of a viscoelastic, stratified earth can induce global sea level fluctuations comparable to the short-term component in eustatic sea-level curves. The sign of these fluctuations, which are very sensitive to the rheological stratification, depends on the geographical location of the observation point; rises and falls in sea level can thus be coeval in different parts of the world. This finding is a distinct contrast to the main assumption underlying the reconstruction of eustatic curves, namely that global sea-level events produce the same depositional sequence everywhere. It is proposed that polar wander should be added to the list of geophysical mechanisms that can control the third-order cycles in sea level.
Document ID
19900052765
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Sabadini, Roberto
(Bologna, Universita Italy)
Doglioni, Carlo
(Ferrara, Universita Italy)
Yuen, David A.
(Minnesota, University Minneapolis, United States)
Date Acquired
August 14, 2013
Publication Date
June 21, 1990
Publication Information
Publication: Nature
Volume: 345
ISSN: 0028-0836
Subject Category
Geophysics
Accession Number
90A39820
Distribution Limits
Public
Copyright
Other

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