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Isotopic hydrology in the Amazonia: 2. Relative discharges of the Negro and Solimões rivers through 18 O concentrations
Author(s) -
Matsui E.,
Salati F.,
Friedman I.,
Brinkman W. L. F.
Publication year - 1976
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr012i004p00781
Subject(s) - amazon rainforest , confluence , hydrology (agriculture) , environmental science , geology , ecology , biology , geotechnical engineering , computer science , programming language
Measurements of 18 O were made on samples of water collected during a 2‐year period on the Amazon below the confluence of the Negro and Solimões rivers. The measurements show that the Amazon is not completely mixed 120 km below the confluence. Estimates of relative flows were based on the 18 O concentrations and show that the relative contribution of the Negro varied from 19% in February 1973 to 68% in July 1973.