Results 11 to 20 of about 402 (119)

First Full Vector Archeomagnetic Data From Northern Mexico

Geochemistry, Geophysics, Geosystems, 2021
Several regional secular variation curves of the geomagnetic field have been proposed for Mexico over the last millennia. Despite a fairly large number of archeomagnetic data, these curves remain imprecise because of an uneven quality and geographic ...
B. Tchibinda Madingou, M. Perrin, G. Hervé, A. Hernàndez Cardona, L. M. Alva‐Valdivia, R. Cruz Antillón   +5 more
doaj   +2 more sources

Synchronizing Geomagnetic Field Intensity Records in the Levant Between the 23rd and 15th Centuries BCE: Chronological and Methodological Implications

Geochemistry, Geophysics, Geosystems, 2020
Archeomagnetic records are an important source of information on the past behavior of the geomagnetic field. Frequently, however, coeval archeomagnetic intensity (archeointensity) datasets from nearby locations display significant discrepancies ...
Ron Shaar, Shlomit Bechar, Israel Finkelstein, Yves Gallet, Mario A. S. Martin, Yael Ebert, Jonathan Keinan, Lilach Gonen   +7 more
doaj   +2 more sources

New Archeomagnetic Directional Records From Iron Age Southern Africa (ca. 425-1550 CE) and Implications for the South Atlantic Anomaly [PDF]

Geophysical Research Letters, Volume 45, Issue 3, Page 1361-1369, 16 February 2018., 2018
The paucity of Southern Hemisphere archeomagnetic data limits the resolution of paleosecular variation models. At the same time, important changes in the modern and historical field, including the recent dipole decay, appear to originate in this region ...
Huffman T. N., Huffman T. N., Huffman T. N., John A. Tarduno, Main M., Main M., Michael Watkeys, Munyaradzi Manyanga, Phenyo C. Thebe, Richard K. Bono, Rory D. Cottrell, Thomas Huffman, Vincent J. Hare   +12 more
core   +2 more sources

Low Geomagnetic Field Intensity in Southern China 6,000 Years Ago

Geophysical Research Letters
The West Pacific Anomaly (WPA), a low geomagnetic field anomaly observed in the 16th to 18th centuries, represents a recently recognized and complex feature of Earth's magnetic field.
Xin Luo, Jiabo Liu, Huapei Wang, Maximilian Schanner, Yuan Zhang, Peng Xie, Jigen Tang, Peng Han, Quan Li, Fei Han, Xiaowei Chen, Chen Wen, Wen Zhong, Yufan Hu, Qingsong Liu   +14 more
doaj   +2 more sources

Paleointensity Study on the Holocene Surface Lavas on the Island of Hawaii Using the Tsunakawa–Shaw Method [PDF]

Frontiers in Earth Science, 2018
Investigating volcanic paleointensity during the Holocene is important for linking archeointensity and sedimentary paleointensity. Across the globe, the island of Hawaii is one of the most studied subaerial locations.
Yuhji Yamamoto, Ryo Yamaoka
doaj   +3 more sources

Triaxe archeointensity analysis

Physics of the Earth and Planetary Interiors, 2022
Since 2004, numerous archeomagnetic intensity data have been obtained using the vibrating sample magnetometer Triaxe, which measures full-vector magnetization directly at high temperatures, in either an applied or zero field. Satisfactory comparisons have been made between Triaxe intensity data and results derived from more conventional Thellier ...
Yves Gallet, Maxime Le Goff, Agnès Genevey   +2 more
openalex   +3 more sources

The cooling‐rate effect on microwave archeointensity estimates [PDF]

Geophysical Research Letters, 2013
AbstractNew microwave (MW) paleointensity data on historical bricks from Northeast Brazil presented a bias toward higher fields when compared to previous cooling‐rate corrected double‐heating paleointensity estimates; the same relates to the previously reported values for pottery from Southwestern Pacific islands. A simple theoretical approach suggests
Wilbor Poletti, Gelvam A. Hartmann, Mimi J. Hill, Andrew J. Biggin, Ricardo I.F. Trindade   +4 more
openalex   +3 more sources

GEOMAGIA50: An archeointensity database with PHP and MySQL [PDF]

Geochemistry, Geophysics, Geosystems, 2008
The GEOMAGIA50 database stores 3798 archeomagnetic and paleomagnetic intensity determinations dated to the past 50,000 years. It also stores details of the measurement setup for each determination, which are used for ranking the data according to prescribed reliability criteria. The ranking system aims to alleviate the data reliability problem inherent
Kimmo Korhonen, F. Donadini, Peter Riisager, L. J. Pesonen   +3 more
openalex   +2 more sources

Archeomagnetic intensity investigations of French medieval ceramic workshops: Contribution to regional field modeling and archeointensity-based dating

Physics of the Earth and Planetary Interiors, 2021
Seven new archeointensity data are obtained through the analysis of groups of pottery and kiln fragments from ceramic workshops unearthed in France, precisely dated from the High Middle Ages. The measurements are carried out using the Triaxe magnetometer, following a dedicated experimental protocol that takes into account the effects of anisotropy and ...
Agnès Genevey, Yves Gallet, Erwan Thébault, Philip W. Livermore, Alexandre Fournier, Sébastien Jesset, Annie Lefèvre, Nadine Mahé-Hourlier, E. Marot, S. Regnard   +9 more
openalex   +6 more sources

New archeointensity data from NW Argentina (1300–1500 CE) [PDF]

Physics of the Earth and Planetary Interiors, 2018
A good characterization of the geomagnetic field strength at centennial to millennial time scales in the Southern Hemisphere is particularly crucial to disentangle the long-term evolution of the South Atlantic Anomaly (SAA), an intriguing geomagnetic feature currently observed at the Earth’s surface.
Miriam Gómez‐Paccard, Annick Chauvin, María Ester Albeck, María Amalia Zaburlin, Diego Basso, Fco. Javier Pavón–Carrasco, Marı́a Luisa Osete, Saioa A. Campuzano   +7 more
openalex   +6 more sources