This program analyzes the dynamic nature of rivers and the relationship between their forms and processes. It examines the various functions a single river needs to perform, and shows how to measure river form and process, relate the two, and synthesize several attributes of the form of a river channel. It examines the differences between low and high flow, and explains how to calculate the quantity and velocity of water transport and how to attempt to measure the amount of bed-load. It compares bankfull and low flow and upstream and downstream discharge, shows how man's intervention has solved a low water problem, and asks students to try to deduce what will occur during a flood. (20 minutes)

Tell a Friend! Your Name: Your Email: Your Friend's Email: Your Message: We respect your privacy and will not use your friend's address without permission. Item#: BVL803 Copyright date: ©1982

Part of the Series : Geology: A Search for Order

DVD	$19.95
DVD + 3-Year Streaming	$29.93
3-Year Streaming	$19.95

Prices include public performance rights.
Only available in the US.

		Soils: Profiles and Processes This program looks at the way soils can vary even within a small area of a forest. A well-developed podzol is examined in detail, with samples taken from the center of each horizon and then analyzed for organic content, soil acidity, mineral content,...(more details)		DVD $19.95 DVD + 3-Year Streaming $29.93 3-Year Streaming $19.95
		Waves and Beaches This program examines the various shapes taken by a beach in order to dissipate wave energy. Two beaches are compared-a fairly steep one, a mixture of sand and shingle, and, half a mile away, a flat and sandy one. Field measurement and laboratory dem...(more details)		DVD $19.95
		Coastal Dunes At ground level, shallow seas, broad beaches, dunes, and waterlogged hollows seem to comprise a chaotic environment. In fact, there is order and form, produced by the interaction of wind, vegetation, and moving sand. Because sand dunes develop rapidl...(more details)		DVD $19.95 DVD + 3-Year Streaming $29.93 3-Year Streaming $19.95
		Glacial Deposits Sediment sequences deposited under glacial conditions during the Pleistocene period cover some 10% of the earth's land surface. This program concentrates on the interpretation of a sediment sequence exposed in a river cliff cut by the River Severn in...(more details)		DVD $19.95 DVD + 3-Year Streaming $29.93 3-Year Streaming $19.95
		Catchment Studies This program follows the route taken by rainwater through a number of different catchments and evaluates the response of these catchments to a rainfall event-a response represented by the flood hydrograph. The program was photographed in the Santa Cl...(more details)		DVD $19.95

See additional titles in Ecology | Geology | Ecosystems | Physical Geography