Dr. Thomas Dunne Professor Donald Bren School of Environmental Science & Management University of California, Santa Barbara Education: Ph. D. Geography, Johns Hopkins University, 1969 Professional expertise: Dr. Dunne conducts field and theoretical studies of drainage-basin, hillslope, and fluvial geomorphology, and in the application of hydrology and geomorphology in landscape management and hazard analysis. He spent two years teaching at the University of Nairobi, Kenya, beginning a continuing research interest in the East African environment. His research in Kenya has concentrated on experimental study of runoff and soil erosion processes, as well as statistical studies and field surveys of the effects of land use on hillslope erosion and river basin sediment yields. He moved to McGill University, Montreal in 1971 to teach Hydrology and Geomorphology, and conducted research on the effects of land cover and topography on snowmelt and runoff in the tundra and boreal forest of subarctic Quebec. Between 1973 and 1995, he taught Geomorphology and Hydrogeology in the Department of Geological Sciences at the University of Washington, Seattle. During that time, he continued research in Kenya and on the Amazon River, Brazil, but devoted most of his research time to mass wasting and river processes in the Pacific Northwest. Most of this work, conducted jointly with graduate Students, included studies of: landsliding and debris flows; drainage basin sediment budgets in natural and managed forests; tephra erosion and debris-flow sedimentation resulting from the 1980 eruption of Mt. St Helens; and sediment transport and channel morphology in sand-bed and gravel-bed river channels. He conducted several studies related to resource management, such as the impacts of gravel harvesting on river channel sedimentation and morphology; impacts of timber harvest on erosion and sedimentation; and effects of flow diversion and reservoir management on sediment budgets and channel sedimentation. Since 1982, he has participated in studies of the hydrology, sediment transport, and floodplain sedimentation in the main stem of the Amazon River, Brazil. He now leads an Interdisciplinary Science Team participating in the Earth Observing System project organized by NASA that studies hydrology, biogeochemistry, and environmental change in the Amazon River Basin (The EOS Amazon Project). His particular scientific role in the project involves: field measurements and modeling of soil properties, runoff and erosion processes on local scales; and modeling of runoff and streamflow routing throughout the whole basin employing data from ground networks and satellites. At the University of California Santa Barbara, he teaches Geomorphology and Earth System Science, and supervises graduate Students affiliated with the School of Environmental Science and Management and the Department of Geography and Department of Geological Science. Current research includes: Stochastic and spatial aspects of the sediment budgets of mountainous drainage basins. Geomorphological role of debris flows. Hydrology, sediment transport, sedimentation, and geomorphology in the Amazon River Basin. Hillslope evolution, incorporating the relations between climate, vegetation, hydrology, sediment transport, and soil properties. Selected publications: T. Dunne, Stochastic aspects of the relations between climate, hydrology and landforms; Trans. Japanese Geomorphological Union, 12, 1-24, 1991 Benda, L.E., T. Dunne, D.J. Miller, G. Reeves, and J. Agee, Landscape Dynamics; in Ecology and Management of Streams and Rivers in the Pacific Northwest (eds. R. Naiman and R. Bilby), Springer-Verlag, in press. Reid, L.M. and T. Dunne, Rapid Construction of Sediment Budgets for Drainage Basins; Geo-Ecology Texts, Catena Varlag, Reiskirchen, Germany, in press. T. Dunne and L. H. Fairchild, Estimation of flood and sedimentation hazards around Mt. St. Helens (1), Shin-Sabo, J. Erosion Control Engineering Soc. Japan, 36(4), 12-22, 1984. T. Dunne and L. H. Fairchild, Estimation of flood and sedimentation hazards around Mt. St. Helens (2), Shin-Sabo, J. Erosion Control Engineering Soc. Japan, 37(1), 13-22 1984. K. X Whipple and T. Dunne, Debris-flow fans in Owens Valley, California, Geol. Soc. Amer. Bull., 104, 1992. J. E. Richey, L. A. K. Mertes, T. Dunne, and five others!, Sources and routing of the Amazon River flood wave; Global Biogeochemical Cycles, 3, 191-204, 1989.