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ECOLOGIA • Acta Amaz. 13 (2) • Apr 1983 • https://doi.org/10.1590/1809-43921983132307 linkcopy

Open-access PRECIPITATION IN THE CENTRAL AMAZON BASIN: - THE ISOTOPIC COMPOSITION OF RAIN AND ATMOSPHERIC MOISTURE AT BELÉM AND MANAUS (1)

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    SUMMARY

    In order to improve the understanding of the water in the Amazon Basin, samples of rain and moisture were collected daily at Belém and Manaus from August 78 to January 80. All isotope data are presented. The most depleted values, sometimes lower than — 10‰ in δ18O at Belém or Manaus, were encountered during the rainy season (January-April).

    Possible causes of the seasonal differences in tne isotope pattern are discussed.

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    Instituto Nacional de Pesquisas da Amazônia Av. André Araujo, 2936 Aleixo, 69060-001 Manaus AM Brasil, Tel.: +55 92 3643-3030, Fax: +55 92 643-3223 - Manaus - AM - Brazil
    E-mail: acta@inpa.gov.br
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