ABSTRACT
Donald E. White provided leadership and inspiration for widely ranging research on the hydrothermal system at Yellowstone National Park (YNP) that was initiated in the 1960s, and continues to the present. An important component of that effort was an assessment of a minimum rate of heat discharge by the hydrothermal system (Fournier et al. 1976). The flux of CI-into the rivers originating in YNP and draining to the east of the continental divide was measured, and then heat flux was calculated using an enthalpy-CI-model developed for that purpose. Subsequently Norton & Friedman (1985, 1991) and Friedman & Norton (2000) expanded the coverage to include the rivers draining YNP west of the continental divide, and monitored the CI-flux out of YNP for the water years 1983-1999. The minimum hydrothermal heat flux value derived from these CIflux measurements has proved to be an important parameter in the development of alternative models of dynamic processes that may be operating within the Yellowstone magmatic-hydrothermal system (Fournier 1989).
