Results 51 to 60 of about 2,212 (217)
Rates of Geomagnetic Field Change During Excursions and Reversals
Journal of Geophysical Research: Solid Earth, Volume 131, Issue 10, October 2026.Abstract The Earth's magnetic field is characterized by complex changes, reflecting various geodynamo processes. Paleomagnetic studies have provided evidence of geomagnetic polarity reversals and excursions throughout Earth's history. We use data‐based paleomagnetic field models (LSMOD.2, GGFSS70, and GGFMB) and the axial dipole moment reconstruction ...
Sunaina Shinu +2 more
wiley +1 more source
Paleointensity of ODP Site 162-980
, 2013 Paleointensity of ODP Site 162 ...
Channell, James E T +3 more
core +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
doaj
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 10, October 2026.Abstract In paleomagnetism, records of paleosecular variation (PSV) on centennial timescales are often based on magnetic measurements from lava flows. However, samples from recent flows that cooled in known magnetic fields often fail to produce the expected paleomagnetic directions, and samples from the same flow often show large within‐ and between ...
A. E. Hendrickx +2 more
wiley +1 more source
Establishing a Lunar Origin for Paleomagnetic Records in Apollo Samples
Geophysical Research Letters, 2023 Numerous paleomagnetic studies attribute the magnetization preserved within Apollo samples to an ancient dynamo. However, other works propose that lunar rocks were instead magnetized by either transient impact‐related magnetic fields on the Moon or by ...
S. M. Tikoo, J. Jung
doaj +1 more source
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
openaire +1 more source
, 2012 High-resolution paleomagnetic secular variation and relative paleointensity since the Late Pleistocene in Southern South ...
Preda, Michel +17 more
core +1 more source
New contributions to the Early Pliocene geomagnetic field strength: Case study of southern Caucasus volcanics [PDF]
Geofísica Internacional, 2000 We carried out a Thellier paleointensity study on a ~ 3.8 My Pliocene lava flow succession from Georgia (southern Caucasus). Previous paleomagnetic studies on this succession revealed that eight consecutive lava flows record a reverse polarity direction ...
José Antonio González +4 more
doaj
Geochemistry, Geophysics, Geosystems, 2021 High‐quality paleointensity data are essential for improving our understanding of the geomagnetic field; however, it is challenging to find materials that reliably record full vector magnetization going back in time.
Courtney J. Sprain +3 more
doaj +1 more source
Automated Mineral Identification and Rock‐Type Classification of Lunar Mare Basalts Using SEM Images
Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.Abstract We present an automated system for identifying minerals and classifying rock types in Apollo lunar mare basalts using scanning electron microscopy (SEM) imagery. Mineral segmentation is based on a U‐Net architecture, supplemented by two scale‐aware models designed to incorporate pixel size information.
Ji‐In Jung +3 more
wiley +1 more source