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Titre du document / Document title

SEM/EDS observations of impurities in polar ice: artifacts or not?

Auteur(s) / Author(s)

BAKER I. A. N. (1) ; CULLEN Daniel (1) ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

(1) Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire 03755-8000, ETATS-UNIS

Résumé / Abstract

A series of experiments was undertaken to determine the origin of filaments found in grain boundaries and impurity spots found in grain interiors of polar ice during observation in the scanning electron microscope. It is shown that although the filaments are artifacts, they demonstrate the presence of impurities segregated to the grain boundary planes. It is also demonstrated that the impurities observed in the grain interior reside there and were not transported from the grain boundaries during specimen preparation or observation.

Revue / Journal Title

Journal of Glaciology    ISSN  0022-1430   CODEN JOGLAO 

Source / Source

2003, vol. 49, no165, pp. 184-190 [7 page(s) (article)] (21 ref.)

Langue / Language

Anglais

Editeur / Publisher

International Glaciological Society, Cambridge, ROYAUME-UNI  (1947) (Revue)

Mots-clés anglais / English Keywords

America

;

North America

;

Antarctica

;

Greenland

;

Artefact

;

Impurity

;

Grain boundary

;

Crystal defect

;

Microstructure

;

Dispersive spectrometry

;

X ray spectrometry

;

Scanning electron microscopy

;

Ice

;

Cores

;

Ice cap

;

Polar cap

;

Mots-clés français / French Keywords

Amérique

;

Amérique du Nord

;

Antarctique

;

Groenland

;

Artefact

;

Impureté

;

Joint grain

;

Défaut cristallin

;

Microstructure

;

Spectrométrie dispersive

;

Spectrométrie RX

;

Microscopie électronique balayage

;

Glace

;

Carotte

;

Calotte glaciaire

;

Calotte polaire

;

Mots-clés espagnols / Spanish Keywords

America

;

America del norte

;

Antártico

;

Groenlandia

;

Artefacto

;

Impureza

;

Limite grano

;

Defecto cristalino

;

Microestructura

;

Espectrometría dispersiva

;

Espectrometría RX

;

Microscopía electrónica barrido

;

Hielo

;

Testigo

;

Casquete glaciar

;

Casquete polar

;

Localisation / Location

INIST-CNRS, Cote INIST : 5524, 35400011599058.0040

Nº notice refdoc (ud4) : 15294642



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