On the relationship between suspended sediment concentration, rainfall variability and groundwater: an empirical and probabilistic analysis for the Andean Beni River, Bolivia (2003–2016)
| Autor: | Jhan Carlo Espinoza, José Max Ayala, Jorge Molina-Carpio, Elisa Natalia Armijos Cardenas, Naziano Filizola, Raúl Espinoza-Villar, Omar Gutierrez-Cori, Ana Claudia Callau Poduje, Irma Ayes Rivera |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Dewey Decimal Classification::500 | Naturwissenschaften::550 | Geowissenschaften
Rainfall Probabilistic Methods Precipitation Intensity Hydraulic engineering Rain Amazonian Geography Planning and Development Madeira River Biochemistry Suspended Sediments ddc:550 Atlantic Ocean Groundwater Clocks Baseflow Water Science and Technology purl.org/pe-repo/ocde/ford#1.05.09 [http] geography.geographical_feature_category Base flow Groundwater Resources Hydrological Years Rating Curve Suspended Sediment Suspended Sediment Concentrations ddc:333.7 Sedimentation Geology Bolivia Surface suspended sediment concentrations Andes Rating curve Aquatic Science Structural basin Probabilistic Analysis purl.org/pe-repo/ocde/ford#1.05.00 [http] Aerodynamics Rainfall Variability Hydrology (agriculture) Rivers Tributary Beni River Counter-clockwise Dewey Decimal Classification::300 | Sozialwissenschaften Soziologie Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333 7 | Natürliche Ressourcen Energie und Umwelt Probability Hydrology geography Hysteresis Brasil Amazon River Sediment Fluvial Deposit Concentration (composition) surface suspended sediment concentrations Empirical Analysis purl.org/pe-repo/ocde/ford#1.05.11 [http] Groundwater Flow Andean Beni River Sediment Discharge ddc:333 7 |
| Zdroj: | IGP-Institucional Instituto Geofísico del Perú instacron:IGP Water (Switzerland) 11 (2019), Nr. 12 Water Volume 11 Issue 12 Repositório Institucional do INPA Instituto Nacional de Pesquisas da Amazônia (INPA) instacron:INPA |
| Popis: | Fluvial sediment dynamics plays a key role in the Amazonian environment, with most of the sediments originating in the Andes. The Madeira River, the second largest tributary of the Amazon River, contributes up to 50% of its sediment discharge to the Atlantic Ocean, most of it provided by the Andean part of the Madeira basin, in particular the Beni River. In this study, we assessed the rainfall (R)-surface suspended sediment concentration (SSSC) and discharge (Q)-SSSC relationship at the Rurrenabaque station (200 m a.s.l.) in the Beni Andean piedmont (Bolivia). We started by showing how the R and Q relationship varies throughout the hydrological year (September to August), describing a counter-clockwise hysteresis, and went on to evaluate the R&ndash SSSC and Q&ndash SSSC relationships. Although no marked hysteresis is observed in the first case, a clockwise hysteresis is described in the second. In spite of this, the rating curve normally used ( SSSC = aQ b ) shows a satisfactory R2 = 0.73 (p < 0.05). With regard to water discharge components, a linear function relates the direct surface flow Qs&ndash SSSC, and a hysteresis is observed in the relationship between the base flow Qb and SSSC. A higher base flow index (Qb/Q) is related to lower SSSC and vice versa. This article highlights the role of base flow on sediment dynamics and provides a method to analyze it through a seasonal empirical model combining the influence of both Qb and Qs, which could be employed in other watersheds. A probabilistic method to examine the SSSC relationship with R and Q is also proposed. |
| Databáze: | OpenAIRE |
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