Global river hydrography and network routing: baseline data and new approaches to study the world's large river systems

2013 ◽  
Vol 27 (15) ◽  
pp. 2171-2186 ◽  
Author(s):  
Bernhard Lehner ◽  
Günther Grill
Keyword(s):  
Large River ◽  
Network Routing ◽  
Baseline Data ◽  
River Systems ◽  
New Approaches ◽  
Approaches To Study

scholarly journals River Water Quality of the Selenga-Baikal Basin: Part II—Metal Partitioning under Different Hydroclimatic Conditions

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2392
Author(s):  
Nikolay Kasimov ◽  
Galina Shinkareva ◽  
Mikhail Lychagin ◽  
Sergey Chalov ◽  
Margarita Pashkina ◽  
...  
Keyword(s):  
River Basin ◽  
Large River ◽  
Metal Partitioning ◽  
River Systems ◽  
Catchment Scale ◽  
Selenga River Basin ◽  
Extensive Field ◽  
Basin Scale ◽  
Wide Range ◽  
Dissolved Form

The partitioning of metals and metalloids between their dissolved and suspended forms in river systems largely governs their mobility and bioavailability. However, most of the existing knowledge about catchment-scale metal partitioning in river systems is based on a limited number of observation points, which is not sufficient to characterize the complexity of large river systems. Here we present an extensive field-based dataset, composed of multi-year data from over 100 monitoring locations distributed over the large, transboundary Selenga River basin (of Russia and Mongolia), sampled during different hydrological seasons. The aim is to investigate on the basin scale, the influence of different hydroclimatic conditions on metal partitioning and transport. Our results showed that the investigated metals exhibited a wide range of different behaviors. Some metals were mostly found in the dissolved form (84–96% of Mo, U, B, and Sb on an average), whereas many others predominantly existed in suspension (66–87% of Al, Fe, Mn, Pb, Co, and Bi). Nevertheless, our results also showed a consistently increasing share of metals in dissolved form as the metals were transported to the downstream parts of the basin, closer to the Lake Baikal. Under high discharge conditions (including floods), metal transport by suspended particulate matter was significantly greater (about 2–6 times). However, since high and low water conditions could prevail simultaneously at a given point of time within the large river basin, e.g., as a result of on-going flood propagation, snap-shot observations of metal partitioning demonstrated contrasting patterns with domination of both particulate and dissolved phases in different parts of the basin. Such heterogeneity of metal partitioning is likely to be found in many large river systems. These results point out the importance of looking into different hydroclimatic conditions across space and time, both for management purposes and contaminant modeling efforts at the basin scale.

Current research status of large river systems: a cross-continental comparison

2020 ◽  
Vol 27 (31) ◽  
pp. 39413-39426 ◽  
Author(s):  
Wan Su ◽  
Juan Tao ◽  
Jun Wang ◽  
Chengzhi Ding
Keyword(s):  
Large River ◽  
River Systems ◽  
Research Status

The Mini-Missouri Trawl: A Useful Methodology for Sampling Small-Bodied Fishes in Small and Large River Systems

2009 ◽  
Vol 24 (1) ◽  
pp. 103-108 ◽  
Author(s):  
David P. Herzog ◽  
David E. Ostendorf ◽  
Robert A. Hrabik ◽  
Valerie A. Barko
Keyword(s):  
Large River ◽  
River Systems

New approaches to study excited states in density functional theory: general discussion

2020 ◽  
Vol 224 ◽  
pp. 483-508
Author(s):  
Jan Gerit Brandenburg ◽  
Kieron Burke ◽  
Emmanuel Fromager ◽  
Matteo Gatti ◽  
Sara Giarrusso ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Excited States ◽  
Density Functional ◽  
Functional Theory ◽  
New Approaches ◽  
Approaches To Study

The reversible process concept applied to the environmental management of large river systems

1987 ◽  
Vol 11 (5) ◽  
pp. 607-617 ◽  
Author(s):  
Claude Amoros ◽  
Jean -Claude Rostan ◽  
Guy Pautou ◽  
Jean -Paul Bravard
Keyword(s):  
Environmental Management ◽  
Large River ◽  
River Systems ◽  
Reversible Process

Large barchanoid dunes in the Amazon River and the rock record: Implications for interpreting large river systems

2016 ◽  
Vol 454 ◽  
pp. 92-102 ◽  
Author(s):  
Renato Paes de Almeida ◽  
Cristiano Padalino Galeazzi ◽  
Bernardo Tavares Freitas ◽  
Liliane Janikian ◽  
Marco Ianniruberto ◽  
...  
Keyword(s):  
Large River ◽  
Amazon River ◽  
River Systems ◽  
Rock Record

scholarly journals The challenge of reconstructing human impact on large river systems

PAGES news ◽  
2007 ◽  
Vol 15 (1) ◽  
pp. 21-23 ◽  
Author(s):  
Thomas Hoffmann ◽  
A Lang ◽  
R Dikau
Keyword(s):  
Human Impact ◽  
Large River ◽  
River Systems
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