Results 31 to 40 of about 244 (74)

Mono Lake or Laschamp geomagnetic event recorded from lava flows in Amsterdam Island (southeastern Indian Ocean)

, 2003
We report a survey carried out on basalt flows from Amsterdam Island in order to check the presence of intermediate directions interpreted to belong to a geomagnetic field excursion within the Brunhes epoch, completing this paleomagnetic record with ...
Bernard Henry, Camps, Claire Carvallo, Dunlop, Gilles Ruffet, Guyodo, Hoffman, Hoffman, Pierre Camps, T. Poidras, Tauxe, Vinogradov   +11 more
core   +4 more sources

Geomagnetic Dipole Strength During the Cretaceous Normal Superchron Recorded by Baked Sediments From Hainan (SE Asia)

Geophysical Research Letters, Volume 52, Issue 17, 16 September 2025.
Abstract The Cretaceous Normal Superchron constitutes an enigmatic ∼37‐Myr interval of stable polarity in the history of the Earth's magnetic field. The strength of the geomagnetic dipole moment during this interval is controversial, with absolute paleointensity determinations on crystallized volcanic rocks, volcanic glasses, and silicate crystals ...
Yuchen Chi, Florian Lhuillier, Jun Meng, Chunyang Zhang, Valeriy P. Shcherbakov   +4 more
wiley   +1 more source

Tephra Deposits of the Tajogaite Volcano, La Palma: Changes of Magnetic Properties Through the 2021 Eruption

Geophysical Research Letters, Volume 52, Issue 15, 16 August 2025.
Abstract We report the results of a rockmagnetic study of tephra material produced by the Tajogaite volcano, in La Palma (Canary Islands), during 19 September through 13 December 2021. Our magnetic analysis reveals a change of rock magnetic properties through the eruption.
J. M. Parés, V. Soler, M. F. Bógalo, M. Calvo, A. Carrancho, E. Vernet   +5 more
wiley   +1 more source

Assessing the Reliability of the Pseudo‐Thellier Estimates in Fired Ceramics and Source Clays

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 7, July 2025.
Abstract The geomagnetic field's intensity is key to understanding the Earth's core dynamics and their surface impacts. While the Thellier–Thellier method remains the standard for recovering absolute paleointensity from baked materials, it is time‐consuming and may alter magnetic mineralogy due to heating cycles. The pseudo‐Thellier method offers a non‐
Wilbor Poletti, Mikaelly G. Rocha, Plínio Jaqueto, Gelvam A. Hartmann, Grasiane L. Mathias, Daniele Brandt, Ricardo I. F. Trindade, Paulo Maximiano   +7 more
wiley   +1 more source

Rock magnetic characterization of archeological pottery and natural materials from the Kiya petroglyph site (Russia): an insight into post-burial alteration

Evolving Earth
While processes that lead to recording magnetic information in stone and ceramic artifacts have been extensively investigated, the preservation of archeomagnetic signal after the artifacts have been abandoned has received much less attention.
Alexandra Abrajevitch, Andrey S. Samynin
doaj   +1 more source

Perspectivas de los estudios de arqueomagnetismo en Sudamérica [PDF]

, 2014
Archaeomagnetism is the study of past geomagnetic field variations using bricks, pottery and campfire stones. This is a multidisciplinary work in which archaeologists, historians and geophysicists play important roles.
Bocco, G., Gogorza, Claudia Susana, Goguichaishvili, Avto, Greco Mainero, Mariano Catriel, Morales, Juan, Rapalini, Augusto Ernesto   +5 more
core   +1 more source

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

Geophysical Research Letters, Volume 52, Issue 9, 16 May 2025.
Abstract 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. However, the history of the WPA is still uncertain due to a scarcity of paleointensity data in Southeast Asia.
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
wiley   +1 more source

Modeling the Impacts of Antarctic Sea Ice Decline: Responses of Atmospheric Dynamics

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 9, 16 May 2025.
Abstract Rapidly changing climate in polar regions not only impacts their local environments but also influences weather patterns in tropical and mid‐latitude regions. A key indicator of these changes is the accelerated decline of sea ice in polar areas.
Yasemin Ezber, Deniz Bozkurt, Mehmet Ilicak   +2 more
wiley   +1 more source

Archaeomagnetic and rock magnetic study of six kilns from North Africa (Tunisia and Morocco) [PDF]

, 2012
International audienceNew full-vector archaeomagnetic data for North Africa recovered from the study of six kilns, five from Tunisia and one from Morocco, are presented.
Annick Chauvin, Ben-Yosef, Callegarin, Callegarin, Casas, Catanzariti, Chauvin, Coe, Coll-Conesa, Cressier, Cressier, Dassi, Day, De Marco, Donadini, Donadini, Donadini, Elisabet Beamud, Evans, Evans, Evans, Fisher, Francisco J. Pavón-Carrasco, Gallet, Gehring, Gendler, Genevey, Genevey, Genevey, Gregg McIntosh, Gómez-Paccard, Gómez-Paccard, Gómez-Paccard, Gómez-Paccard, Hartmann, Herries, Iassanov, Jacques Thiriot, Jordanova, Kirschvink, Korte, Kovacheva, Kovacheva, Kovacheva, Lowrie, Maury, McIntosh, McIntosh, Miriam Gómez-Paccard, Márton, Márton, Márton, Nachasova, Odah, Pavón-Carrasco, Peters, Pick, Prévot, Ruiz-Martinez, Sapin, Schnepp, Schnepp, Spassov, Suteu, Tanguy, Tauxe, Tema, Tema, Tema, Thellier, Thiriot, Özdemir   +71 more
core   +6 more sources

Resolving the Interpretation of Magnetic Coercivity Components From Backfield Isothermal Remanence Curves Using Unmixing of Non‐Linear Preisach Maps: Application to Loess‐Paleosol Sequences

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 6, June 2024.
Abstract Unmixing of remanent magnetization curves, either isothermal remanent magnetization (IRM) or backfield IRM, is widely used in rock magnetic and environmental magnetic studies to discriminate between magnetic coercivity components of different origins. However, the wide range of physical properties of natural magnetic particles gives rise to an
Cristian Necula, Ioan Lascu, Cristian Panaiotu, Daniela Gheorghe   +3 more
wiley   +1 more source