Source: Dan Hawkes
Hydrogeological modeling under uncertain conditions—from site
characterization to prediction—requires not only the numerical or
analytical models of flow and transport but also various statistical
analyses, including parameter estimation, uncertainty analysis,
sensitivity analysis, data worth analysis, and experimental design.
Sensitivity analysis is an especially important component in this
process, since there is a strong interaction between it and other
components. A team of ESD numerical modelers (Haruko Wainwright, Stefan
Finsterle, Quanlin Zhou, and Jens Birkholzer) recently compared a local
sensitivity analysis method with two global sensitivity analysis
methods. To illustrate these methods, they conducted a sensitivity
analysis of pressure propagation induced by fluid injection and leakage
in a reservoir–aquitard–aquifer system. The results show that the three
methods provide consistent parameter importance rankings in this system.
Their study also indicates that the three methods can provide
additional information to improve system understanding.
To read further, go to: http://www.sciencedirect.com/science/article/pii/S0098300413001702
Citation: Wainwright, H.M., S. Finsterle, Y. Jung, Q. Zhou, and J.
Birkholzer (2013), Making sense of global sensitivity analyses.
Computers and Geosciences, DOI: 0.1016/j.cageo.2013.06.006.
Funding: FE, NRAP, NETL