Fluvial sedimentology VII by Michael Blum, Susan Marriott, Suzanne Leclair

By Michael Blum, Susan Marriott, Suzanne Leclair

IAS unique e-book 35, Fluvial Sedimentology VII, includes of a sequence of peer-reviewed papers that have been firstly provided on the seventh overseas convention on Fluvial Sedimentology, held in Lincoln, Nebraska on August 6-10, 2001. The 29 papers during this quantity replicate the topical and geographic variety of intriguing examine carried out through fluvial sedimentologists before everything of the twenty first century. subject matters represented during this quantity contain (a) circulation, sediment shipping, and bedform dynamics, (b) features of contemporary fluvial landforms, environments and structures, (c) actual analogue and numerical modeling of fluvial structures, (d) the responses of Quaternary fluvial platforms to weather swap, energetic tectonics, and/or sea-level switch, and (e) features of pre-Quaternary fluvial deposits and evolution of pre-Quaternary fluvial structures.

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1977) Bed load transport by natural rivers. Water Resour. , 13, 303–312. E. (1982) Settling velocity of natural particles. Water Resour. , 18, 1615–1626. L. (1979) An Atlas of British Columbia: People, Environment, and Resource Use. University of British Columbia Press, Vancouver, 135 pp. B. and Kellerhals, R. (1984) The meandering distributary channels of the upper Columbia River. In: River Meandering (Ed. M. Elliot), pp. 113–125. Proceedings of the Conference River ’83, New Orleans, Louisiana, October 24–26, 1983, American Society of Civil Engineers, New York.

In the second hypothesis, anabranching and anastomosed rivers are thought to be an equilibrium form where channels are adjusted in geometry and hydraulic friction to just transmit the imposed water and sediment discharges. In cases where gradient cannot easily be increased to carry a larger sediment load, Nanson & Knighton (1996) and Nanson & Huang (1999) proposed that a shift from single to multiple channels leads to an increase in sediment transport rate per unit water discharge. Thus, like changes in slope and channel form, anastomosis is conjectured to be another mechanism whereby a fluvial system can maintain grade.

3 Seasonal changes in water level on the Rio Juruá at Cruzeiro do Sul for the years 1928–1933, the Rio Amazonas at Óbidos for the years 1928–1933, and the upper Rio Negro at Barcellos (1929–1933). Datum is the lowest-water values (adapted from Pardé, 1936). , 1989b). In the main channel, lowest water occurs in late October to early November. River levels rise slowly for about 8 months and the highest levels are attained in late June. , 1964). , 1997). The smoothness of the annual cycle (Fig. , 1989a).

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