Results 11 to 20 of about 153 (126)
Toward a possible next geomagnetic transition? [PDF]
Natural Hazards and Earth System Sciences, 2013 The geomagnetic field is subject to possible reversals or excursions of polarity during its temporal evolution. Considering that: (a) in the last 83 million yr the typical average time between one reversal and the next (the so-called chron) is around 400
A. De Santis, E. Qamili, L. Wu
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A negative test of orbital control of geomagnetic reversals and excursions [PDF]
Geophysical Research Letters, 2001 A ∼41 Kyr periodic component has been reported in some sedimentary paleointensity records, allowing speculation that there may be some component of orbital control of geomagnetic field generation such as by obliquity modulation. However, no discernable tendency is found for astronomically‐dated geomagnetic reversals in the Plio‐Pleistocene (0 to 5.3 Ma)
Kent, Dennis V., Carlut, Julie
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IODP Expeditions 303 and 306 Monitor Miocene- Quaternary Climate in the North Atlantic [PDF]
Scientific Drilling, 2006 Introduction The IODP Expeditions 303 and 306 drilling sites were chosen for two reasons: (1) to capture Miocene-Quaternary millennial-scale climate variability in sensitive regions at the mouth of the Labrador Sea and in the North Atlantic icerafted ...
Carlos Alvarez-Zarikian +6 more
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Magnetostratigraphy of sediments from Lake El'gygytgyn ICDP Site 5011-1: paleomagnetic age constraints for the longest paleoclimate record from the continental Arctic [PDF]
Climate of the Past, 2014 Paleomagnetic measurements were performed on sediments drilled from ICDP Site 5011-1 in Lake El'gygytgyn (67°30' N, 172°05' E) located in Far East Russian Arctic. The lake partly fills a crater formed by a meteorite impact 3.58 ± 0.04 Ma ago.
E. M. Haltia, N. R. Nowaczyk
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Wavelet analysis on paleomagnetic (and computer simulated) VGP time series
Annals of Geophysics, 2003 We present Continuous Wavelet Transform (CWT) data analysis of Virtual Geomagnetic Pole (VGP) latitude time series. The analyzed time series are sedimentary paleomagnetic and geodynamo simulated data.
A. Siniscalchi +3 more
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Geomagnetism, volcanoes, global climate change, and predictability. A progress report
Annals of Geophysics, 1994 A model is investigated, by which the encounters of the solar system with dense interstellar clouds ought to trigger either geomagnetic field reversals or excursions, that produce extra electric currents within the Earth dynamo, that cause extra Joule's ...
G. P. Gregori
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The South Atlantic Anomaly: the key for a possible geomagnetic reversal
Frontiers in Earth Science, 2016 The South Atlantic Anomaly is nowadays one of the most important features of the Earth’s magnetic field. Its extent area at the Earth’s surface is continuously growing since the intensity instrumental measurements are available covering part of the ...
F. Javier ePavón-Carrasco +3 more
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Journal of Geography, Environment and Earth Science International, 2021 Convection in Earth’s georeactor sub-shell is responsible for generating the geomagnetic field and for maintaining the critical balances necessary for stable sub-core nuclear fission. External factors capable of disrupting sub-shell convection are trauma at Earth’s surface, for example by meteorite impact, and electrical energy transfer via Faraday’s ...
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The Iceland Palaeomagnetism Database (ICEPMAG)
Earth, Planets and Space, 2019 The extensive lava piles of Iceland contain a unique record of geomagnetic field variations spanning the past ~ 16 Ma. Since the 1950s, palaeomagnetic data have been obtained from over 9400 Icelandic lavas.
Justin A. D. Tonti-Filippini +1 more
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Predictability of Magnetic Field Reversals
MathematicsGeomagnetic field measurements indicate that at present we may be on the brink of the Earth’s magnetic field reversal, potentially resulting in all the accompanying negative consequences for the mankind.
Daniil Tolmachev +3 more
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