Validation and performance report
2011
Grandjean , Gilles (Bureau de Recherches Géologiques et Minières(France).) | Samyn , Kévin (Bureau de Recherches Géologiques et Minières(France).) | Cousin , Isabelle (INRA , Ardon (France). UR 0272 Unité Science du Sol) | Seger , Maud (INRA , Ardon (France). UR 0272 Unité Science du Sol) | Besson , Arlène (INRA , Ardon (France). UR 0272 Unité Science du Sol) | Lambot , Sébastien (Université Catholique de Louvain(Belgique).) | Van Wesemael , Bas (Université Catholique de Louvain(Belgique).) | Garfagnoli , Francesca (Università degli Studi di Firenze(Italie).) | Chiarantini , Leandro (SELEX Galileo(International).)
This deliverable present a validation of the geo-physical techniques, based on different sets of criteria: i) accuracy of the measurements generally estimated by the RMSE, ii) capacity to represent spatial patterns and spatial variability. The geophysical data are interpreted in terms of different thematic maps such as: soil thickness, stone content, water content, clay content and C content. For each of these maps the performance are evaluated by measuring the gap between the estimated soil properties and those observed on the field or stored in existing soil database. Special attention is also given to the spatial patterns of errors and uncertainties inherent to the geophysical techniques. The different maps obtained on the Luxembourg or Mugello test sites are presented. First order maps are obtained by a simple inversion of geophysical signals into soil properties; second order maps are computed by several first order maps that are combined to produce more accurate information or a soil property of a high level.
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