HR: 13:40h
AN: H23G-01 INVITED     [Abstracts]
TI: Quantifying States, Stocks, Flows and Residence Times: From Watershed Characterization to Watershed Diagnosis
AU: * McDonnell, J J
EM: jeff.mcdonnell@orst.edu
AF: Dept. of Forest Engineering, Oregon State University, Corvallis, OR 97331 United States
AB: The proposed CUAHSI environmental observatories provide unprecedented opportunities for developing new process insights and predictions for terrestrial water distribution and associated biogeochemical processes. Because the proposed observatories are at a scale considerably larger than the traditional headwater research catchment, new approaches to gauging will be required. This talk argues that the now-standard bottom-up, reductionist approaches of the past many decades will need to be replaced by topdown approaches to watershed discretization and diagnosing dominant processes. The observatories may be a catalyst for changing (and formalizing) the way that we gauge and instrument watersheds for quantifying states, stocks, flows and residence times: from bottom-up to topdown approaches, from invasive to non-invasive techniques, from purely physical characterization to isotopic, biogeochemical and ecological characterization, from point-based to pattern-based observations, from single basin studies to inter-comparison and classification.
DE: 1800 HYDROLOGY
DE: 1804 Catchment
DE: 1866 Soil moisture
SC: Hydrology [H]
MN: Fall Meeting 2005