|
|
Article: Study results from University of Arizona in the area of water supply research published.(Report)
- Article from:
- Ecology, Environment & Conservation
- Article date:
- November 20, 2009
CopyrightCOPYRIGHT 2009 NewsRX. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
|
"The drought frequency index (DFI) is employed in this study as a drought indicator and as a trigger mechanism for multireservoir system operations during drought," investigators in the United States report.
"The DFI characterizes droughts according to their duration and intensity, using a probabilistic criterion that takes into account the persistence of extreme low precipitation values. Performances with and without the DFI are evaluated, using reliability and resilience indices, for the Conchos river basin-a tributary of the Rio Grande/Bravo basin between United States and Mexico-through a multilevel nonlinear optimization procedure oriented to reduce water ...