Redirigiendo al acceso original de articulo en 15 segundos...
Inicio  /  Water  /  Vol: 6 Par: 7 (2014)  /  Artículo
ARTÍCULO
TITULO

Seasonal Accumulation and Depletion of Local Sediment Stores of Four Headwater Catchments

Sarah E. Martin    
Martha H. Conklin and Roger C. Bales    

Resumen

Seasonal turbidity patterns and event-level hysteresis analysis of turbidity verses discharge in four 1 km2 headwater catchments in California?s Sierra Nevada indicate localized in-channel sediment sources and seasonal accumulation-depletion patterns of stream sediments. Turbidity signals were analyzed for three years in order to look at the relationships between seasonal turbidity trends, event turbidity patterns, and precipitation type to stream sediment production and transport. Seasonal patterns showed more turbidity events associated with fall and early to mid- winter events than with peak snow-melt. No significant turbidity patterns emerged for periods of snow melt vs. rain. Single event hysteresis loops showed clockwise patterns were dominant suggesting local sediment sources. In successive discharge events, the largest turbidity spike was often associated with the first but not necessarily the largest discharge event-indicating seasonal depletion of local sediment stores. In multi-peaked discharge events, hysteresis loops shifted from clockwise to linear or random patterns suggesting that localized sediment stores are being used up and sufficient flow energy must be reached to start entraining the more consolidated bank/bed sediment or that dominant sediment sources may be shifting to less localized areas such as hill slopes. A conceptual model with phases of accumulation and transport is proposed.

Palabras claves

 Artículos similares

       
 
Gabriel B. Senay, Stefanie Kagone, Gabriel E. L. Parrish, Kul Khand, Olena Boiko and Naga M. Velpuri    
We enhanced the agro-hydrologic VegET model to include snow accumulation and melt processes and the separation of runoff into surface runoff and deep drainage. Driven by global weather datasets and parameterized by land surface phenology (LSP), the enhan... ver más
Revista: Hydrology

 
Zhongjie He, Xiachuan Fu, Yueqi Zhao and Xuyu Jiang    
Using the local multiscale energy and vorticity analysis (MS-EVA) and based on the global high-resolution ocean reanalysis product GLORYS12V1 for 20 years, this study investigates the energy transfers and conversions of Kuroshio in the Luzon Strait and i... ver más

 
Elena Mikheeva, Johannes Bieser and Corinna Schrum    
Due to their long half-life, polychlorinated biphenyls (PCBs) tend to contaminate not only coastal areas, but they travel over long distances, eventually reaching remote areas such the Arctic. The physical and biogeochemical features of every coastal are... ver más
Revista: Water

 
Alessandro G. Mudadu, Anna Maria Bazzoni, Virgilio Congiu, Giuseppe Esposito, Alberto Cesarani, Rita Melillo, Giuseppa Lorenzoni, Simona Cau, Barbara Soro, Bruna Vodret, Domenico Meloni and Sebastiano Virgilio    
Annual and interannual dynamics of shellfish toxins and associated harmful algal species (HAS) were analyzed from 2015 to 2020 in Tortolì Lagoon (Sardinia, west Mediterranean Sea). Analysis of seasonal occurrence of different harmful algae, such as Dinop... ver más

 
Eric A. Sproles, Andrew Mullen, Jordy Hendrikx, Charles Gatebe and Suzi Taylor    
We present technical advances and methods to measure effective broadband physical albedo in snowy mountain headwaters using a prototype dual-sensor pyranometer mounted on an Autonomous Aerial Vehicle (an AAV). Our test flights over snowy meadows and fore... ver más
Revista: Hydrology