caa a22 4500 445815345 CHVBK 20180317145226.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10040-011-0739-9 doi (NATIONALLICENCE)springer-10.1007/s10040-011-0739-9 Hydrostratigraphic analysis of the Darling River valley (Australia) using electromagnetic induction data and a spatially constrained algorithm for quasi-three-dimensional electrical conductivity imaging [Elektronische Daten] [John Triantafilis, Fernando Santos] Analyse hydrostratigraphique de la vallée de la rivière Darling (Australie) à l'aide de données d'induction électromagnétique et d'un algorithme contraint spatialement pour l'imagerie quasi 3D de la conductivité électrique Efforts are being made to improve the irrigation efficiency in the Murray-Darling River Basin, Australia, to deal with predicted rainfall decline and to reduce the incidence of secondary soil and water salinization. The latter commonly occurs as a result of locating water reservoirs upon relic drainage channels. To better manage irrigation, information is required about the spatial distribution of soil type and the stratigraphic features capable of redistributing deep-draining water. In previous research, electromagnetic (EM) induction instruments (e.g. EM38 and EM34) have been used to map the distribution of soil type, hydrological processes (e.g. deep drainage) and vadose-zone features. The aim of this research is to demonstrate how a joint inversion of EM38 and EM34 data, using a one-dimensional spatially constrained algorithm for quasi three-dimensional (quasi-3D) electrical conductivity imaging, can be used to infer the areal distribution of soil types and physiographic and hydrogeological units. The quasi-3D modeling of true electrical conductivity provides a framework for future environmental monitoring and management to mitigate the hydrological processes that drive localized secondary salinization in the study area. Springer-Verlag, 2011 Geophysical methods nationallicence Salinization nationallicence General hydrogeology nationallicence Electromagnetic induction nationallicence Australia nationallicence Triantafilis John School of Biological, Earth and Environmental Sciences, The University of New South Wales, NSW2052, Sydney, Australia aut Santos Fernando Universidade de Lisboa, CGUL-Instituto Don Luís Laboratório Associado, C8, 1749-016, Lisbon, Portugal aut Hydrogeology Journal Springer-Verlag 19/5(2011-08-01), 1053-1063 1431-2174 19:5<1053 2011 19 10040 https://doi.org/10.1007/s10040-011-0739-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10040-011-0739-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Triantafilis John School of Biological, Earth and Environmental Sciences, The University of New South Wales, NSW2052, Sydney, Australia aut NATIONALLICENCE 700 1- Santos Fernando Universidade de Lisboa, CGUL-Instituto Don Luís Laboratório Associado, C8, 1749-016, Lisbon, Portugal aut NATIONALLICENCE 773 0- Hydrogeology Journal Springer-Verlag 19/5(2011-08-01), 1053-1063 1431-2174 19:5<1053 2011 19 10040 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer