Chemical and mechanical erosion in the Niger and Amazon basins: climatic and paleoclimatic evolution of tropical landscapes
The annual hydrograph separation of the upper Niger basin at Bamako, determined from the TDS and TSS concentration variations in the river waters during the dry period 1990-1992, has been extrapolated to climatic cycles from arid to perhumid. A dilution factor (F=rainfall/runoff) is introduced, so t...
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Published in | Comptes rendus de l'Académie des sciences. Série II. Fascicule a, Sciences de la terre et des planètes Vol. 326; no. 9; pp. 625 - 632 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
01.05.1998
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Subjects | |
Online Access | Get full text |
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Summary: | The annual hydrograph separation of the upper Niger basin at Bamako, determined from the TDS and TSS concentration variations in the river waters during the dry period 1990-1992, has been extrapolated to climatic cycles from arid to perhumid. A dilution factor (F=rainfall/runoff) is introduced, so that the extrapolation from the Niger basin data corresponds to the weathering parameters which characterize, in very humid environments, three tributaries of the Amazon. The erosion rates of tropical landscapes submitted for 150 Myr are finally reconstituted to major paleoclimatic oscillations. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1251-8050 |
DOI: | 10.1016/S1251-8050(98)80253-X |