Relative palaeointensities for Site 379-U1533, Amundsen Sea

Relative palaeointensity analyses for Site 379-U1533, completed in 2020-2022 at the University of Southampton. Three methods shown: natural remanent magnetisation (NRM) normalised by anhysteretic remanent magnetisation (ARM) (NRM/ARM) for the alternating field (AF) demagnetisation range 20-55 mT (pr...

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Bibliographic Details
Main Authors: Hopkins, Becky, Xuan, Chuang, Hillenbrand, Claus-Dieter, van Peer, Tim E, Jin, Yuxi, Frederichs, Thomas, Gao, Liang, Bohaty, Steven M
Format: Dataset
Language:English
Published: PANGAEA
Subjects:
379-U1533
Age model
Antarctica
Barium enrichment
COMPCORE
Composite Core
Confidence interval
Exp379
interpolated
Joides Resolution
Palaeomagnetism
Pleistocene
productivity
Relative palaeointensity
Relative paleointensity proxy
Amundsen Sea
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.971630
Description
Summary:Relative palaeointensity analyses for Site 379-U1533, completed in 2020-2022 at the University of Southampton. Three methods shown: natural remanent magnetisation (NRM) normalised by anhysteretic remanent magnetisation (ARM) (NRM/ARM) for the alternating field (AF) demagnetisation range 20-55 mT (preferred method for Site U1533 and used in further interpretations); NRM (at 20 mT AF demagnetisation) normalised by magnetic susceptibility (MS) (NRM/MS); and NRM normalised by isothermal remanent magnetisation (IRM) for the alternating field (AF) demagnetisation range 20-60 mT (NRM/IRM). All three methods show strong coherent signal suggesting an NRM signal largely consisting of a geomagnetic field component. R-values shown for analyses completed using UPmag slope method (Xuan and Channell, 2009 doi:10.1029/2009GC002584). Measurements cover the Plio-/Pleistocene period. See Hopkins et al., 2024 doi:10.1016/j.quascirev.2023.108460 for more information on data acquisition and processing.

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