Results 51 to 60 of about 346 (179)
A New View of Long-Term Geomagnetic Field Secular Variation
Frontiers in Earth Science, 2018 This study carries out a statistical analysis of high-resolution PSV records for the last ~70 ka from three different regions of the Earth. We consider directional and intensity variability in each region on time scales of 103-105 years in order to ...
Steve P. Lund
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Paleointensity database provides new resource
Eos, Transactions American Geophysical Union, 1994 A global paleointensity database constructed from all published data based on volcanic rocks in geological time older than 0.03 Ma is now available and ready for use. It can be obtained from the authors as text files on a 3.5″ diskette in MS‐DOS or Macintosh format or via e‐mail. It includes not only major parameters, but also minor details that can be
Hidefumi Tanaka, Masaru Kono
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Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.Abstract Understanding the mechanisms linking low‐latitude monsoon variability and high‐latitude ice‐sheet discharge is critical for elucidating past atmospheric teleconnections, yet direct evidence for such linkages during the last glacial period remains limited. Here we present a high‐resolution terrigenous input record from the South China Sea (SCS)
Haosen Wang +6 more
wiley +1 more source
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract We present a new method for paleomagnetic investigations, polarized neutron imaging, a non‐destructive magnetic imaging technique benefiting from the high penetration depth and spin of the neutron allowing spatial characterization of the magnetic field within a sample.
Cédric Holme Qvistgaard +9 more
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Paleomagnetic studies on single crystals separated from the middle Cretaceous Iritono granite
Earth, Planets and Space, 2018 Investigations of superchrons are the key to understanding long-term changes of the geodynamo and the mantle’s controlling role. Granitic rocks could be good recorders of deep-time geomagnetic field behavior, but paleomagnetic measurements on whole-rock ...
Chie Kato +4 more
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Selection of Basalts for Paleointensity Studies
Journal of geomagnetism and geoelectricity, 1986 The selection of basalt samples for the determination of paleointensity, proposed by SENANAYAKE et al. (1982) based mainly on the low-temperature susceptibility variation, may not be adequate for the purpose. Besides the Type 2 basalts in their classification, the magnetic mineral Fe2.9Ti0.1O4 (TM10), which occurs commonly in basalts, also shows an ...
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.Abstract The late Eocene to early Oligocene is an intriguing Paleogene period in which the Earth climate state changed from Warmhouse to Coolhouse. Accurate age models are essential for investigating these climate transitions. The southwestern Pacific International Ocean Discovery Program (IODP) Site U1553, with its almost complete succession of the ...
Yang Zhang +5 more
wiley +1 more source
Paleointensity Determination Using the Thellier Technique
Journal of geomagnetism and geoelectricity, 1986 The Thellier technique is discussed, specifically in respect of small (3×3mm) samples measured using a cryogenic magnetometer. It is concluded that as long as stringent criteria are imposed the technique gives reliable results. Agreement with the Shaw technique is noted, as also with observatory-based values.
M. J. AITKEN +3 more
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Earth, Planets and SpaceSingle silicate crystals hosting tiny magnetic inclusions are remarkable targets to study the paleointensities of the Earth and extraterrestrial samples. Since the pioneering work done in late 1990s, paleointensity studies using various silicate minerals
Chie Kato, Yoichi Usui, Masahiko Sato
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Journal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.Abstract Paleomagnetic and rock magnetic analyses were conducted on sediment cores from the northeastern Greenland Shelf and Young Sound along the western edge of Fram Strait. The paleomagnetic signal in all three sediment cores is characterized by a strong and stable single component magnetization carried by low coercivity ferrimagnetic single domain ...
Juliette Girard +7 more
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