By Avijit Gupta
Huge Rivers: Geomorphology and administration explores a massive subject in geomorphology and sedimentology: the shape and serve as of significant rivers. Our wisdom of the massive rivers of the area is proscribed. it really is presently tough to recognize huge rivers of the earlier from relict sedimentary deposits or to constitution administration rules for lengthy foreign rivers. This exciting ebook brings jointly a suite of papers on huge rivers of the realm, as a distinct creation to a tough topic. The booklet comprises thirty chapters and is organised into 3 sections. the 1st half is at the environmental standards for developing and protecting an enormous river method. the second one is a set of case reviews on 14 huge rivers from diverse continents, protecting a number of actual environments. The 3rd part contains chapters at the size and administration of enormous rivers. First publication to provide in one quantity state of the art wisdom on administration and geomorphology of huge rivers of the worldA pioneering learn, pushing the bounds of our wisdom concerning massive riversIncludes entire case experiences protecting the foremost huge rivers of the realm together with Amazon, Mississippi, Nile, Congo, Indus, and MekongWritten through a number one crew of exotic, overseas contributorsLarge Rivers: Geomorphology and administration is key interpreting for postgraduate scholars and researchers in fluvial geomorphology, hydrology, sedimentary geology, and river administration. it's also of relevance to engineers and environmental experts within the inner most and public sectors engaged on significant rivers of the realm.
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G. doming associated with large igneous provinces Longitudinal foreland basin Transverse systems Intrabasinal setting Rift systems Cratonic settings Tsangpo and Irrawaddy systems by the Brahmaputra River (Brookfield, 1998). The Lower Mekong River also shows evidence of river capture and headward erosion and diversion of its original course (Brookfield, 1998). An interesting example of rivers in the compressional belt is the Shatt al Arab formed by the confluence of the Euphrates and the Tigris Rivers and draining the Mesopotamian plains (Bridges, 1990).
7 GROWTH AND DEVELOPMENT OF LARGE RIVER SYSTEMS Large rivers evolve through geologic time; their growth and development is therefore intricately linked to (a) tectonic processes such as orogenesis, rifting and domal/ plateau uplifts, and (b) long term climatic variability including precipitation trends. Large river systems are also influenced by the dynamic interaction between tectonism and erosion. , 2003). The interplay between focused precipitation, erosion and uplift in response to unloading favour the sustenance of hinterland to basin slopes over geological timescales.
The Salween is a smaller system with an annual sediment load of ∼100 million tonnes but with a discharge of >9500 m3 s−1. Based on a regression model, Hovius (1998) suggested five estimator variables to explain the variance in global sediment yield, namely specific runoff, drainage area, maximum catchment height, mean annual temperature, and annual temperature range. However, they only explain about half of the observed variance. Hovius (1998) also pointed out that an important control of sediment supply/ yield is the rate of uplift in the catchment, which essentially provides new material for erosion and which is not adequately reflected in most models of sediment yield.