@article{fdi:010049033, title = {{S}ensitivity analysis of distributed erosion models : framework}, author = {{C}heviron, {B}. and {G}umiere, {S}. {J}. and {L}e {B}issonnais, {Y}. and {M}oussa, {R}. and {R}aclot, {D}amien}, editor = {}, language = {{ENG}}, abstract = {{W}e introduce the ({P}, {R}, p) procedure for analysis of distributed erosion models, evaluating separate sensitivities to input fluxes (precipitations {P}), to the propensity of soil to surface flow (runoff conditions {R}), and to specific erosion properties (descriptive parameters p). {F}or genericity and easier comparisons between models, superparameters of equivalent slope and equivalent erodibility are assembled from innate descriptive parameters: parameterization is reduced to four coded integers that are arguments of the soil loss function. {D}irectional sensitivities are calculated in a deterministic way, associated with any selected displacement in parameter space. {I}n this multistage and risk-orientated procedure, special emphasis is placed on trajectories from best-case toward worst-case scenarios, involving one-at-a-time variations and {L}atin {H}ypercube samples. {S}ensitivity maps are produced in the superparameter plane, tracing risk isovalues and estimating the relative importance of the equivalent parameters and of their spatial distributions.}, keywords = {}, booktitle = {}, journal = {{W}ater {R}esources {R}esearch}, volume = {46}, numero = {}, pages = {art. {W}08508}, ISSN = {0043-1397}, year = {2010}, DOI = {10.1029/2009wr007950}, URL = {https://www.documentation.ird.fr/hor/fdi:010049033}, }