Mineralogical composition of aerosols at Amsterdam Island

A. Gaudichet; R. Lefèvre; A. Gaudry; B. Ardouin; G. Lambert; J. M. Miller

doi:10.3402/tellusb.v41i3.15091

Mineralogical composition of aerosols at Amsterdam Island

Tellus B: Chemical and Physical Meteorology

Volume 41 (1989): Issue 3

By: A. Gaudichet, R. Lefèvre, A. Gaudry, B. Ardouin, G. Lambert and J. M. Miller

Open Access

|Jan 1989

Abstract

In this paper, data on the mineralogical composition of insoluble particulate matter collected in May, July and September 1984 at Amsterdam Island, South Indian Ocean (34°47’S, 77°31’E) are presented for the first time. Atmospheric levels of these insoluble aerosols remain very low (from 0.25 to 0.01 μg m^-3); the size of the particles is mainly in the submicronic range. The long-range continental origin of these particles is well confirmed by atmospheric tracers such as ²²²Rn and ²¹⁰Pb and by air mass back-trajectories. Continental inputs, mainly from South Africa and Madagascar, that can be identified by “radonic storms” have a high illite/kaolinite ratio. However those from Australia, though less frequent at Amsterdam Island, have a low illite/kaolinite ratio. Thus, kaolinite can be considered a good tracer of transport of Australian aerosols into the subantarctic.

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Articles in this issue

DOI: https://doi.org/10.3402/tellusb.v41i3.15091 | Journal eISSN: 1600-0889

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Language: English

Page range: 344 - 352

Submitted on: Dec 28, 1987

Accepted on: Oct 3, 1988

Published on: Jan 1, 1989

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1989 A. Gaudichet, R. Lefèvre, A. Gaudry, B. Ardouin, G. Lambert, J. M. Miller, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 41 (1989): Issue 3