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Social and Behavioral Sciences Commons™
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- Geography (17)
- Geosciences, Multidisciplinary (8)
- Fluvial geomorphology (4)
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Articles 1 - 30 of 92
Full-Text Articles in Social and Behavioral Sciences
Holocene Lacustrine Deposits And Sediment Yield In Lake Canyon, Southeastern Utah, William Graf
Holocene Lacustrine Deposits And Sediment Yield In Lake Canyon, Southeastern Utah, William Graf
William L. Graf
No abstract provided.
In Memoriam, Melvin G. Marcus, 1929-1997, William Graf, Patricia Gober, Anthony Brazel
In Memoriam, Melvin G. Marcus, 1929-1997, William Graf, Patricia Gober, Anthony Brazel
William L. Graf
No abstract provided.
Saving Water In A Desert City, By W.E. Martin, H.M. Ingram, N.K. Laney, And A.H. Griffin, William Graf
Saving Water In A Desert City, By W.E. Martin, H.M. Ingram, N.K. Laney, And A.H. Griffin, William Graf
William L. Graf
No abstract provided.
Sources Of Uncertainty In River Restoration Research, William Graf, M. Diamond, B. Kronvang
Sources Of Uncertainty In River Restoration Research, William Graf, M. Diamond, B. Kronvang
William L. Graf
No abstract provided.
Catastrophe Theory In Fluvial Geomorphology, William Graf
Catastrophe Theory In Fluvial Geomorphology, William Graf
William L. Graf
No abstract provided.
Downstream Changes In Stream Power In The Henry Mountains, Utah, William Graf
Downstream Changes In Stream Power In The Henry Mountains, Utah, William Graf
William L. Graf
Total stream power does not necessarily increase systematically in the downstream direction because of the conflicting influences of channel slope, width, and depth. Historical records and field data for arroyo systems of the northern Henry Mountains, south-central Utah, show that total stream power decreased in the downstream direction during a deposition period before 1896 and increased downstream during an erosion period thereafter. When total stream power declined in the downstream direction, channels were small and meandering, and the ten-year flood exceeded channel capacity, resulting in overbank deposition of sediment. After an especially erosive flood in 1896, total stream power increased …
Locational Probability For A Dammed, Urban Stream: Salt River, Arizona, William Graf
Locational Probability For A Dammed, Urban Stream: Salt River, Arizona, William Graf
William L. Graf
Data from historical aerial photographs analyzed with a GIS show that river channel change on the Salt River in the Phoenix metropolitan area of central Arizona has been driven by large-scale regional flood events and local human activities. Mapping of functional surfaces such as low-flow channels, high-flow channels, islands, bars attached to channel banks, and engineered surfaces shows that during the period from 1935 to 1997, the relative areal coverage of these surfaces has changed. Flood events have caused general changes in sinuosity of the low-flow channel, but islands have remained remarkably consistent in location and size, while channel-side bars …
The Rate Law In Fluvial Geomorphology, William Graf
The Rate Law In Fluvial Geomorphology, William Graf
William L. Graf
No abstract provided.
Geomorphological Techniques, William Graf
Morphotectonics, William Graf
Fluvial Adjustments To Spread Of Tamarisk In Colorado Plateau Region, William Graf
Fluvial Adjustments To Spread Of Tamarisk In Colorado Plateau Region, William Graf
William L. Graf
Tamarisk, a shrub or low tree that was artificially introduced into the American Southwest in the late 1800s, has spread throughout the Colorado Plateau region by occupying islands, sand bars, and beaches along streams. Historical photographs show that tamarisk spread from northern Arizona to the upper reaches of the Colorado and Green Rivers at a rate of about 20 km/yr. Detailed studies on the Green River in Canyonlands National Park, Utah, show that the plant has trapped and stabilized sediment, causing an average reduction in channel width of 27%. Photogrammetric analysis of historical ground photography, including photos from John Wesley …
Spatial Variation Of Fluvial Processes In Semi-Arid Lands, William Graf
Spatial Variation Of Fluvial Processes In Semi-Arid Lands, William Graf
William L. Graf
No abstract provided.
Fluvial Adjustments To Spread Of Tamarisk In Colorado Plateau Region - Reply, William Graf
Fluvial Adjustments To Spread Of Tamarisk In Colorado Plateau Region - Reply, William Graf
William L. Graf
No abstract provided.
Death In The Marsh, William Graf
Catastrophe Theory As A Model For Change In Fluvial Systems, William Graf
Catastrophe Theory As A Model For Change In Fluvial Systems, William Graf
William L. Graf
No abstract provided.
The Geography Of Geomorphologists In The United States, J. Costa, William Graf
The Geography Of Geomorphologists In The United States, J. Costa, William Graf
William L. Graf
No abstract provided.
Relationship Between Morphology Of Small Streams And Sediment Yield, H. Chang, William Graf, E. Grissinger, H. Guy, W. Osterkamp, G. Parker, S. Trimble, L. Lane
Relationship Between Morphology Of Small Streams And Sediment Yield, H. Chang, William Graf, E. Grissinger, H. Guy, W. Osterkamp, G. Parker, S. Trimble, L. Lane
William L. Graf
The state of the art in the relations between morphology of small streams and sediment yield is assessed. Research findings and recommendations for additional research are presented. Topics include systems and interactions, simulation models, channel forms and processes, transport of sediment in small streams, and aspects of channel morphology. Selected topics for additional research are also included.
Why Physical Geographers Whine So Much, William Graf
Why Physical Geographers Whine So Much, William Graf
William L. Graf
No abstract provided.
Process In Geomorphology, By C. Embleton And J. Thornes, William Graf
Process In Geomorphology, By C. Embleton And J. Thornes, William Graf
William L. Graf
No abstract provided.
Geographers' Too Small World, William Graf
Dry Lands: Man And Plants, By R. Adams, M. Adams, A. Willens, And A. Willens, William Graf
Dry Lands: Man And Plants, By R. Adams, M. Adams, A. Willens, And A. Willens, William Graf
William L. Graf
No abstract provided.
Quaternary And Geomorphology, J. Andrews, William Graf
Quaternary And Geomorphology, J. Andrews, William Graf
William L. Graf
No abstract provided.
Fluvial Processes In The Lower Fremont River Basin, William Graf
Fluvial Processes In The Lower Fremont River Basin, William Graf
William L. Graf
No abstract provided.
Science, Public-Policy, And Western American Rivers, William Graf
Science, Public-Policy, And Western American Rivers, William Graf
William L. Graf
Effective science and well-informed public policy are the avenues to successful management of environmental resources. A critical review of geomorphology, hydrology, and public policy as employed in the management of the river resources of the western United States shows that the endeavours have been poorly connected to each other. Before about 1930, river management disregarded scientific input, while during the New Deal era federal support for river research stimulated a symbiotic relationship between science and policy. Renewed federal funding for research and the emergence of increasingly sophisticated theory and data for rivers during the 1950-1970 period enhanced the connection between …
Streams, Slopes, And Suburban Development, William Graf
Streams, Slopes, And Suburban Development, William Graf
William L. Graf
The percent of available relief in the form of free-face slope and the percent of valley width as floodplain change systematically throughout drainage networks in response to changes in network position. The energy level and discharge of streams at the bases of slopes may be assessed by means of a cumulative stream-ordering system wherein the stream order is directly related to discharge. Investigations of several small drainage basins on the rim of the Denver Basin, Colorado, by means of field measurements, interpretation of aerial photography, and operation of a computer model provide data that indicate that the distribution of near-channel …
The Big Unanswered Questions In Geography, Reginald Golledge, William Graf, Susan Cutter
The Big Unanswered Questions In Geography, Reginald Golledge, William Graf, Susan Cutter
William L. Graf
In noting his fondness for geography, John Noble Wilford, science correspondent for The New York Times, nevertheless challenged the discipline to articulate those big questions in our field, ones that would generate public interest, media attention, and the respect of policymakers. This article presents our collective judgments on those significant issues that warrant disciplinary research. We phrase these as a series of ten questions in the hopes of stimulating a dialogue and collective research agenda for the future and the next generation of geographic professionals.
Environmental Science: Aging Infrastructure And Ecosystem Restoration, Martin Doyle, Emily Stanley, David Havlick, Mark Kaiser, George Steinbach, William Graf, Gerald Galloway, J. Riggsbee
Environmental Science: Aging Infrastructure And Ecosystem Restoration, Martin Doyle, Emily Stanley, David Havlick, Mark Kaiser, George Steinbach, William Graf, Gerald Galloway, J. Riggsbee
William L. Graf
No abstract provided.
How Geographers Can Connect With Policy Makers, William Graf
How Geographers Can Connect With Policy Makers, William Graf
William L. Graf
No abstract provided.
Geomorphology Begins A Global Era, William Graf
Systems, Patterns, Movements, And Cycles, William Graf, P. Gober
Systems, Patterns, Movements, And Cycles, William Graf, P. Gober
William L. Graf
No abstract provided.