The 10Be marine record of the last 3.5 Ma

A. Aldahan; G. Possnert

doi:10.1016/S0168-583X(00)00214-7

The ¹⁰Be marine record of the last 3.5 Ma

A. Aldahan, G. Possnert

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We present in this study a ¹⁰Be profile from a deep-sea sediment section extending to 3.5 Ma. The ¹⁰Be concentration ranges at 2-14 × 10⁸ atoms/g and shows a clear decay trend. The flux of ¹⁰Be ranges at 1-5 × 10⁶ atoms/cm² y and averages at ≈ 2.5 × 10⁶ atoms/cm² y. Enhancements in the ¹⁰Be record occur at the paleomagnetic reversals and excursions suggesting strong effect of changes in the geomagnetic field intensity. Indication of climatic-related variability is also observed from the generally higher ¹⁰Be values during interglacial compared to glacial periods.

Original language	English
Pages (from-to)	513-517
Number of pages	5
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	172
Issue number	1-4
DOIs	https://doi.org/10.1016/S0168-583X(00)00214-7
Publication status	Published - 2000
Externally published	Yes

Keywords

Accelerator mass spectrometry
Be
Marine sediment
Quaternary

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

Access to Document

10.1016/S0168-583X(00)00214-7

Cite this

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title = "The 10Be marine record of the last 3.5 Ma",

abstract = "We present in this study a 10Be profile from a deep-sea sediment section extending to 3.5 Ma. The 10Be concentration ranges at 2-14 × 108 atoms/g and shows a clear decay trend. The flux of 10Be ranges at 1-5 × 106 atoms/cm2 y and averages at ≈ 2.5 × 106 atoms/cm2 y. Enhancements in the 10Be record occur at the paleomagnetic reversals and excursions suggesting strong effect of changes in the geomagnetic field intensity. Indication of climatic-related variability is also observed from the generally higher 10Be values during interglacial compared to glacial periods.",

keywords = "Accelerator mass spectrometry, Be, Marine sediment, Quaternary",

author = "A. Aldahan and G. Possnert",

note = "Funding Information: We thank the Swedish Natural Science Research Council (NFR), and Knut and Alice Wallenberg Foundation for financial support. Sediment samples were kindly provided by the ODP staff at the West Coast Repository, La Jolla, USA.",

year = "2000",

doi = "10.1016/S0168-583X(00)00214-7",

language = "English",

volume = "172",

pages = "513--517",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

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TY - JOUR

T1 - The 10Be marine record of the last 3.5 Ma

AU - Aldahan, A.

AU - Possnert, G.

N1 - Funding Information: We thank the Swedish Natural Science Research Council (NFR), and Knut and Alice Wallenberg Foundation for financial support. Sediment samples were kindly provided by the ODP staff at the West Coast Repository, La Jolla, USA.

PY - 2000

Y1 - 2000

N2 - We present in this study a 10Be profile from a deep-sea sediment section extending to 3.5 Ma. The 10Be concentration ranges at 2-14 × 108 atoms/g and shows a clear decay trend. The flux of 10Be ranges at 1-5 × 106 atoms/cm2 y and averages at ≈ 2.5 × 106 atoms/cm2 y. Enhancements in the 10Be record occur at the paleomagnetic reversals and excursions suggesting strong effect of changes in the geomagnetic field intensity. Indication of climatic-related variability is also observed from the generally higher 10Be values during interglacial compared to glacial periods.

AB - We present in this study a 10Be profile from a deep-sea sediment section extending to 3.5 Ma. The 10Be concentration ranges at 2-14 × 108 atoms/g and shows a clear decay trend. The flux of 10Be ranges at 1-5 × 106 atoms/cm2 y and averages at ≈ 2.5 × 106 atoms/cm2 y. Enhancements in the 10Be record occur at the paleomagnetic reversals and excursions suggesting strong effect of changes in the geomagnetic field intensity. Indication of climatic-related variability is also observed from the generally higher 10Be values during interglacial compared to glacial periods.

KW - Accelerator mass spectrometry

KW - Be

KW - Marine sediment

KW - Quaternary

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