Results 21 to 30 of about 346 (179)
Geochemistry, Geophysics, Geosystems, 2021 The theory for recording of thermally blocked remanences predicts a quasilinear relationship between low fields like the Earth's in which rocks cool and acquire a magnetization.
L. Tauxe +6 more
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MCADAM: A Continuous Paleomagnetic Dipole Moment Model for at Least 3.7 Billion Years
Geophysical Research Letters, 2022 Understanding the evolution of Earth's magnetic field can provide insights into core processes and can constrain plate tectonics and atmospheric shielding.
Richard K. Bono +2 more
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Microwave paleointensity analysis of historic lavas from Paricutín volcano, Mexico [PDF]
Geofísica Internacional, 2005 We report a microwave paleointensity study of historic lavas from Paricutin volcano, erupted during the period between 1943 and 1948. Most samples are characterized by uni-vectorial orthogonal plots.
T. González-Morán +5 more
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Eos, Transactions American Geophysical Union, 1989 Paleointensity is the variations in magnitude of the geomagnetic field in the near and remote past. Similar to paleodirectional studies, paleointensity research depends on the ability of a rock to preserve for a geologically long time the information related to the ambient magnetic field existing at the time the rock was formed.Paleointensity ...
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Geophysical Research Letters, 2022 Paleointensities are key to understanding the formation and evolution of Earth and are determined from rocks which record magnetic fields upon cooling; however, experimental protocols for estimating paleointensities frequently fail. The primary reason is
Lesleis Nagy +3 more
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Variations of paleointensity in the Paleogene
, 2013 Behavior of the geomagnetic field intensity in the Paleogene from sedimentary rocks of the Russian Plate was investigated. It is revealed that in the beginning of the Paleogene alternating of paleointensity variations of little amplitude (about 0.5 Ho, where Ho is the value of modern geomagnetic field taken as 40 mkT) and bursts of large amplitude (up ...
Kurazhkovskii, A. Yu. +2 more
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A geomagnetic estimate of mean paleointensity [PDF]
Journal of Geophysical Research: Solid Earth, 2006 A statistical hypothesis about Earth's magnetic field is tested against paleomagnetism by combining it with the present field to estimate mean paleointensity. The estimate uses the satellite era geomagnetic multipole power spectrum Rn, which gives the mean square magnetic induction represented by spherical harmonics of degree n averaged over the sphere
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Geophysical Research Letters, Volume 53, Issue 14, 28 July 2026.Abstract Dansgaard‐Oeschger (D‐O) events are millennial‐scale high‐latitude climate oscillations with abrupt climate transitions between stadial and interstadial conditions, which are well recorded in and outside of high northern latitudes. However, their signal propagation mechanisms from high to low latitudes are uncertain.
Zhanjie Liu +9 more
wiley +1 more source
Paleosecular Variation Constraints on Geomagnetic Field Morphology at ca. 1100 Ma
Geophysical Research Letters, Volume 53, Issue 13, 16 July 2026.Abstract Paleosecular variation provides a statistical test of long‐term geomagnetic field morphology, but its behavior across Precambrian polarity regimes remains poorly constrained. We compile a virtual geomagnetic pole dispersion data set spanning 1130–1070 Ma and apply nonlinear Model G fitting to evaluate field structure across the interval ...
Hanqing Zhao +7 more
wiley +1 more source
An attempt to determine the microwave paleointensity on historic Paricutín volcano lava flows, Central Mexico [PDF]
Geofísica Internacional, 2003 We report a preliminary rock-magnetic and microwave paleointensity study of historic lava flows between 1943 and 1948 of Paricutín volcano. These lava flows show well-preserved, well-exposed, fresh and extensive outcrops.
J. Rosas-Elguera +6 more
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