Louise H. Kellogg, a geophysicist at the University of California, Davis, who studies how motions in the planet's interior affect surface geological processes such as volcanoes, earthquakes and the formation of mountains, is among the first scientists and engineers in the country to receive newly established Presidential Faculty Fellow Awards. Designed to recognize and support promising young faculty members noted for their teaching and research, the awards carry a grant from the National Science Foundation of $100,000 annually for five years. President Bush named 15 scientists and 15 engineers as fellows, including a total of five from the University of California. Kellogg, an assistant professor in the geology department at UC Davis, uses high-powered supercomputers to model the motions of part of the planet's interior called the mantle. The slow "creeping" of material within the mantle is believed to be the driving force behind geological processes such as earthquakes, the building of mountains, and the steady but almost undetectable movement of continents over the planet's surface. Of special interest to Kellogg are upwellings of hot mantle material, "plumes," that give birth to volcanoes such as Hawaii and Iceland. In addition, she is studying the mixing of materials in the mantle -- in particular, surface crust that is driven back into the planet's interior as part of massive geological recycling -- to probe the history and patterns of mantle flow. A faculty member at UC Davis since 1990, Kellogg came to the campus after completing a fellowship at the California Institute of Technology. She holds two bachelor's degrees, in engineering physics and philosophy, a master's degree in engineering physics and a doctorate in geological sciences from Cornell University.