Magnetic measurements of Greenland and Himalayan ice-core samples

This paper summarizes Isothermal Remanence (IRM300mT) measurements from Holocene ice-core samples from two contrasting glaciological regimes: (i) the Greenland ice sheet and (ii) a Himalayan glacier. Cores had been previously characterized in terms of chronologies, geochemistry and, for the Himalaya...

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Bibliographic Details
Published in:The Holocene
Main Authors: Sahota, J. T. S., Mayewski, Paul A., Oldfield, F., Twickler, Mark S.
Format: Text
Language:unknown
Published: University of New Hampshire Scholars' Repository 1996
Subjects:
Ice cores
magnetic measurements
dust loadings
Greenland
Himalaya
glacier
ice core
Ice Sheet
Online Access:https://scholars.unh.edu/faculty_pubs/355
https://doi.org/10.1177/095968369600600411
Description
Summary:This paper summarizes Isothermal Remanence (IRM300mT) measurements from Holocene ice-core samples from two contrasting glaciological regimes: (i) the Greenland ice sheet and (ii) a Himalayan glacier. Cores had been previously characterized in terms of chronologies, geochemistry and, for the Himalayan core, microparticle concentrations. Six samples from the Greenland 20-D ice core from the time period AD 1876-1983 did not yield magnetic measurements above instrumental noise-level. Significant Isothermal Remanence measurements (IRM300mT) were obtained from some levels in the Himalayan ice core. Scanning electron microscopy and EDAX analyses indicate weathered crustal material. The techniques used require ice-core samples with relatively high dust loadings and/or larger volume ice samples.

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