Results 21 to 30 of about 99 (72)

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

Archeointensity study on baked clay samples taken from the reconstructed ancient kiln: implication for validity of the Tsunakawa-Shaw paleointensity method [PDF]

Earth, Planets and Space, 2015
In 1972, a reconstruction experiment of a kiln had been done to reproduce an excavated kiln of the seventh century in Japan. Baked clay samples were taken from the floor surface and −20 cm level, and they have been stored after determinations of the paleomagnetic directions by partial alternating field demagnetizations.
Yamamoto, Yuhji, Torii, Masayuki, Natsuhara, Nobuyoshi   +2 more
openaire   +1 more source

La céramique bistre fine des ve-vie siècles et les origines du centre potier de Sevrey (Saône-et-Loire)

Revue Archéologique de l’Est
A 2019 archaeological survey in the north-east of the village of Sevrey revealed vestiges of pottery workshops in use from the end of the 5th century to the beginning of the 6th.
Anne Ahü-Delor, Céline Brun, Florent Delencre, Agnès Genevey, Antoine Guicheteau, Valérie Thirion-Merle   +5 more
doaj   +1 more source

First Full‐Vector Archeomagnetic Data From Central Asia (3 BCE to 15 CE Centuries): Evidence for a Large Non‐Dipole Field Contribution Around the First Century BCE

Journal of Geophysical Research: Solid Earth, Volume 129, Issue 2, February 2024.
Abstract Unraveling the short‐term behavior of the Earth's past geomagnetic field at regional scales is crucial for understanding its global behavior and, thus, the dynamics of the deep Earth. In this context, obtaining accurate full‐vector geomagnetic field records from regions where archeomagnetic data are absent becomes essential.
R. Bonilla‐Alba, M. Gómez‐Paccard, F. J. Pavón‐Carrasco, S. A. Campuzano, E. Beamud, V. Martínez‐Ferreras, J. M. Gurt‐Esparraguera, E. Ariño‐Gil, F. Martín‐Hernández, M. L. Osete   +9 more
wiley   +1 more source

Archeointensity Database and Geomagnetic Field Reference Curves for South America Over the Past 5 Millennia

Journal of Geophysical Research: Solid Earth
Abstract The study of variations in geomagnetic field intensity over time and space is crucial to understand the evolution of the geodynamo and its interactions with the Earth's surface. In this work, we introduce the SAGEOMAG (South America GEOMAGnetic) database, a comprehensive and updated repository of geomagnetic field intensity ...
Marum, Victor, Terra-Nova, Filipe, Hartmann, Gelvam, Thébault, Erwan, Jaqueto, Plinio, Poletti, Wilbor, Trindade, Ricardo   +6 more
openaire   +2 more sources

Stalagmite paleomagnetic record of a quiet mid-to-late Holocene field activity in central South America. [PDF]

Nat Commun, 2022
Jaqueto P, Trindade RIF, Terra-Nova F, Feinberg JM, Novello VF, Stríkis NM, Schroedl P, Azevedo V, Strauss BE, Cruz FW, Cheng H, Edwards RL.   +11 more
europepmc   +1 more source

Institute of Geology and Geophysics, Chinese Academy of Sciences-The time-space exploration from Earth core to galaxies. [PDF]

Natl Sci Rev, 2021
Zhang W, Zhao W, Zhao L.
europepmc   +1 more source

Fast geomagnetic field intensity variation between 600 BC and 250 AC. New archeointensity data from Uzbekistan

, 2020
Reunión MAGIBER XI Portugal ,Condeixa a Nova (4 al 6 de septiembre de 2019)
Bonilla-Alba, R., Gómez-Paccard, Miriam, Beamud, Elisabet, Martínez Ferreras, V., Gurt Esparraguera, J. M., Ariño Gil, Enrique, Osete, María Luisa   +6 more
openaire   +1 more source

Novel insights on the geomagnetic field in West Africa from a new intensity reference curve (0-2000 AD). [PDF]

Sci Rep, 2020
Kapper L, Serneels V, Panovska S, Ruíz RG, Hellio G, Groot L, Goguitchaichvili A, Morales J, Ruíz RC.   +8 more
europepmc   +1 more source

Regional archeointensity curve ArchJSK2k from 600 BCE to 1700 CE for East Asia and possible recurrence of the West Pacific Anomaly

There have been reports suggesting the possibility of the West Pacific Anomaly, an area of weak magnetic fields, existing around Southeast Asia during the 15–19 th century. To verify whether such an anomaly existed in other ages, we conducted a study on archeointensity and rock magnetism using several Japanese potteries, which were made in three stages
Yutaka Yoshimura, Hyeon-Seon Ahn, Chie Kato, Yuhji Yamamoto, Chisato Anai, Yoshinori Tajiri, Tadahiro Hatakeyama, Masao Ohno   +7 more
openaire   +1 more source