New frontiers in glacier ice dating: Measurement of natural 32Si by AMS

Uwe Morgenstern; L. Keith Fifield; Albert Zondervan

doi:10.1016/S0168-583X(00)00224-X

New frontiers in glacier ice dating: Measurement of natural ³²Si by AMS

Uwe Morgenstern^*, L. Keith Fifield, Albert Zondervan

^*Corresponding author for this work

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

27 Citations (Scopus)

Abstract

Cosmogenic ³²Si with a half-life of ca. 140 years is an excellent candidate to provide time information in the range 100-1000 years. Accelerator mass spectrometry (AMS) could greatly enhance its applicability as a natural clock due to the small sample size required for measurement. In this paper we describe the requirements for AMS measurement of natural samples, and we demonstrate the first ³²Si AMS measurement for rainwater and glacial ice and snow. The results indicate that with AMS measurement of ca. 1 kg of water, a period of seven half-lives (ca.1000 years) can be covered. The ³²Si result on Fox Glacier ice (New Zealand, 43°S) indicates an ice residence time on the bottom of the glacier of more than 800 years.

Original language	English
Pages (from-to)	605-609
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)00224-X
Publication status	Published - 2000

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title = "New frontiers in glacier ice dating: Measurement of natural 32Si by AMS",

abstract = "Cosmogenic 32Si with a half-life of ca. 140 years is an excellent candidate to provide time information in the range 100-1000 years. Accelerator mass spectrometry (AMS) could greatly enhance its applicability as a natural clock due to the small sample size required for measurement. In this paper we describe the requirements for AMS measurement of natural samples, and we demonstrate the first 32Si AMS measurement for rainwater and glacial ice and snow. The results indicate that with AMS measurement of ca. 1 kg of water, a period of seven half-lives (ca.1000 years) can be covered. The 32Si result on Fox Glacier ice (New Zealand, 43°S) indicates an ice residence time on the bottom of the glacier of more than 800 years.",

keywords = "Cosmogenic isotopes, Geochronology, Glaciology, Silicon-32",

author = "Uwe Morgenstern and Fifield, {L. Keith} and Albert Zondervan",

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doi = "10.1016/S0168-583X(00)00224-X",

language = "English",

volume = "172",

pages = "605--609",

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

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TY - JOUR

T1 - New frontiers in glacier ice dating

T2 - Measurement of natural 32Si by AMS

AU - Morgenstern, Uwe

AU - Fifield, L. Keith

AU - Zondervan, Albert

PY - 2000

Y1 - 2000

N2 - Cosmogenic 32Si with a half-life of ca. 140 years is an excellent candidate to provide time information in the range 100-1000 years. Accelerator mass spectrometry (AMS) could greatly enhance its applicability as a natural clock due to the small sample size required for measurement. In this paper we describe the requirements for AMS measurement of natural samples, and we demonstrate the first 32Si AMS measurement for rainwater and glacial ice and snow. The results indicate that with AMS measurement of ca. 1 kg of water, a period of seven half-lives (ca.1000 years) can be covered. The 32Si result on Fox Glacier ice (New Zealand, 43°S) indicates an ice residence time on the bottom of the glacier of more than 800 years.

AB - Cosmogenic 32Si with a half-life of ca. 140 years is an excellent candidate to provide time information in the range 100-1000 years. Accelerator mass spectrometry (AMS) could greatly enhance its applicability as a natural clock due to the small sample size required for measurement. In this paper we describe the requirements for AMS measurement of natural samples, and we demonstrate the first 32Si AMS measurement for rainwater and glacial ice and snow. The results indicate that with AMS measurement of ca. 1 kg of water, a period of seven half-lives (ca.1000 years) can be covered. The 32Si result on Fox Glacier ice (New Zealand, 43°S) indicates an ice residence time on the bottom of the glacier of more than 800 years.

KW - Cosmogenic isotopes

KW - Geochronology

KW - Glaciology

KW - Silicon-32

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U2 - 10.1016/S0168-583X(00)00224-X

DO - 10.1016/S0168-583X(00)00224-X

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VL - 172

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EP - 609

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

IS - 1-4

ER -

New frontiers in glacier ice dating: Measurement of natural ³²Si by AMS

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