Results 21 to 30 of about 1,861 (213)
Variability of Millennial-Scale Trends in the Geomagnetic Axial Dipole [PDF]
, 2019 The historical trend in the axial dipole is sufficient to reverse the field in less than 2 kyr. Assessing the prospect of an imminent polarity reversal depends on the probability of sustaining the historical trend for long enough to produce a reversal ...
Avery, MS, Buffett, B, Davis, W
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A paleomagnetic record in loess–paleosol sequences since late Pleistocene in the arid Central Asia
Earth, Planets and Space, 2018 Geomagnetic excursions during Brunhes epoch have been brought to the forefront topic in paleomagnetic study, as they provide key information about Earth’s interior dynamics and could serve as another tool for stratigraphic correlation among different ...
Guanhua Li +5 more
doaj +1 more source
Origin of orbital periods in the sedimentary relative paleointensity records
Physics of the Earth and Planetary Interiors, 2008 Abstract Orbital cycles with 100 kyr and/or 41 kyr periods, detected in some sedimentary normalized remanence (relative paleointensity) records by power spectral analysis or wavelet analysis, have been attributed either to orbital forcing of the geodynamo, or to lithologic contamination.
Department of Geological Sciences, University of Florida Williamson Hall, P.O. Box 112120, Gainesville, FL 32611, United States ( host institution ) +2 more
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Paleomagnetic Recording Efficiency of Sedimentary Magnetic Mineral Inclusions: Implications for Relative Paleointensity Determinations [PDF]
Journal of Geophysical Research: Solid Earth, 2019 AbstractSedimentary relative paleointensity (RPI) records are often carried by complex magnetic mineral mixtures, including detrital and biogenic magnetic minerals. Recent studies have demonstrated that magnetic inclusions within larger detrital silicate particles can make significant contributions to sedimentary paleomagnetic records.
Hoabin Hong +7 more
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Geochemistry, Geophysics, Geosystems, 2015 We present a general theory for the acquisition of natural remanent magnetizations (NRM) in sediment under the influence of (a) magnetic torques, (b) randomizing torques, and (c) torques resulting from interaction forces.
R. Egli, X. Zhao
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Paleomagnetic Constraint of the Brunhes Age Sedimentary Record From Lake Junín, Peru
Frontiers in Earth Science, 2020 Normalized remanence, a proxy for relative geomagnetic paleointensity, along with radiocarbon and U-Th age constraints, facilitates the generation of a well-constrained chronology for sediments recovered during International Continental Scientific ...
Robert G. Hatfield +9 more
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Near-seafloor magnetic mapping of off-axis lava flows near the Kairei and Yokoniwa hydrothermal vent fields in the Central Indian Ridge [PDF]
, 2018 The Kairei (KHF) and Yokoniwa hydrothermal fields (YHF) are hosted in mafic as well as ultramafic rocks distributed at an off-axis volcanic knoll of the Central Indian Ridge.
Kyoko Okino, Masakazu Fujii
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Geochemistry, Geophysics, Geosystems, 2014 Eruptive timing in mid‐ocean ridge systems is relatively poorly constrained, despite being an important variable in our understanding of many mid‐ocean ridge processes, including volcanic construction; magma recharge, flux, and storage; and the stability
Julie A. Bowles +5 more
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Saw-toothed pattern of relative paleointensity records and cumulative viscous remanence [PDF]
Earth and Planetary Science Letters, 1996 Several studies of relative paleointensity data derived from marine sediments spanning the last 4 Myr display an asymmetrical “saw-toothed” pattern. Polarity reversals of the geomagnetic field are associated with low points in paleofield intensity, preceded by a long-term progressive decay of the field and followed by a rapid post-transitional recovery
Kok, Yvo S., Tauxe, Lisa
openaire +2 more sources
Application of the pseudo-Thellier technique to a paleomagnetic record from lake El Trébol (Patagonia, Argentina) [PDF]
Geofísica Internacional, 2008 The pseudo-Thellier technique was applied to obtain relative paleointensity determinations using a sediment core from Lake El Trébol (Patagonia, Argentina).
M. A. E. Chaparro +4 more
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