Orbital modulation of the Earth's magnetic field intensity

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doi: 10.1038/28833
Author(s): Channell, J. E. T.; Modell, D. A.; McManus, J.; Lehman, B.
Author Affiliation(s): Primary:
University of Florida, Department of Geology, Gainesville, FL, United States
Other:
Laboratoire des Sciences du Climat et de l'Environnement, France
Woods Hole Oceanographic Institution, United States
Volume Title: Nature (London)
Source: Nature (London), 394(6692), p.464-468. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836 CODEN: NATUAS
Note: In English. 32 refs.; illus.
Summary: A spectral analysis of sedimentary records of relative geomagnetic palaeointensity from ODP Sites 983 and 984 on the Gardar and Bjorn drifts, S of Iceland, is presented. The results indicate significant power at orbital eccentricity (∼ 100 000 yr) and obliquity (41 000 yr). The eccentricity power also occurs in bulk magmatic properties attributed to lighological variations controlled by eccentricity-driven climate change. The obliquity power may be a property of the geomagnetic field, and indicates orbital forcing of geomagnetic field intensity.
Year of Publication: 1998
Research Program: ODP Ocean Drilling Program
Key Words: 18 Geophysics, Solid-Earth; 24 Surficial Geology, Quaternary Geology; Atlantic Ocean; Cenozoic; Climate change; Climate forcing; Correlation; Dynamos; Foraminifera; Invertebrata; Isothermal remanent magnetization; Isotopes; Leg 162; Magnetic field; Magnetic intensity; Magnetic susceptibility; Magnetization; Natural remanent magnetization; North Atlantic; O-18/O-16; ODP Site 983; ODP Site 984; Obliquity of the ecliptic; Ocean Drilling Program; Orbital forcing; Orbits; Oxygen; Paleoclimatology; Paleomagnetism; Precession; Protista; Quaternary; Remanent magnetization; Stable isotopes; Upper Quaternary
Coordinates: N602412 N602412 W0233826 W0233826
N612532 N612532 W0240457 W0240457
Record ID: 1998052746
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom