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Elsenbeer, Helmut ; Lack, Andreas ; Cassel, Keith
Chemical fingerprints of hydrological compartments and flow paths at La Cuenca, western Amazonia
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Kurzfassung auf Englisch
A forested first-order catchment in western Amazonia was monitored for 2 years to determine the chemical fingerprints of precipitation, throughfall, overland flow, pipe flow, soil water, groundwater, and streamflow. We used five tracers (hydrogen, calcium, magnesium, potassium, and silica) to distinguish “fast” flow paths mainly influenced by the biological subsystem from “slow” flow paths in the geochemical subsystem. The former comprise throughfall, overland flow, and pipe flow and are characterized by a high potassium/silica ratio; the latter are represented by soil water and groundwater, which have a low potassium/silica ratio. Soil water and groundwater differ with respect to calcium and magnesium. The groundwater-controlled streamflow chemistry is strongly modified by contributions from fast flow paths during precipitation events. The high potassium/silica ratio of these flow paths suggests that the storm flow response at La Cuenca is dominated by event water.
| Freie Schlagwörter (englisch): | Chemistry of fresh water , Runoff and streamflow , Weathering | |
| Institut 1: | Institut für Geoökologie | |
| Institut 2: | Extern | |
| DDC-Sachgruppe: | Geowissenschaften | |
| Dokumentart: | c Postprint | |
| Schriftenreihe: | Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372 | |
| Band Nummer: | paper 047 | |
| Quelle: | Water Resources Research. - 31 (1995), 12, p. 3051 - 3058. - ISSN 0043-1397 | |
| Sprache: | Englisch | |
| Erstellungsjahr: | 1995 | |
| Publikationsdatum: | 26.03.2008 | |
| Bemerkung: |
first published in: Water Resources Research - 31 (1995), 12, p. 3051 - 3058 ISSN: 0043-1397 doi:10.1029/95WR02537 |
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