HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

Soil characterization using patterns of magnetic susceptibility versus effective radium concentration

Abstract : Low-field magnetic susceptibility χ m and effective radium concentration EC Ra , obtained from radon emana-tion, have been measured in the laboratory with 129 soil samples from Nepal. Samples along horizontal profiles in slope debris or terrace scarps showed rather homogeneous values of both χ m and EC Ra. One sample set, collected vertically on a lateritic terrace scarp, had homogeneous values of EC Ra while χ m increased by a factor of 1 to 10 for residual soils and topsoils. However, for a set of samples collected on three imbricated river terraces, values of EC Ra , homogeneous over a given terrace, displayed a gradual increase from younger to older terraces. By contrast, χ m showed more homogeneous mean values over the three terraces, with a larger dispersion, however, for the younger one. Similarly, Kathmandu sediments exhibited a large increase in EC Ra from sand to clay layers, while χ m increased moderately. The combination of χ m and EC Ra , thus, provides a novel tool to characterize quantitatively various soil groups and may be of interest to distinguish modes of alteration or deposition histories.
Document type :
Journal articles
Complete list of metadata

Cited literature [31 references]  Display  Hide  Download

https://hal-insu.archives-ouvertes.fr/insu-01298112
Contributor : Eva Fareau Connect in order to contact the contributor
Submitted on : Tuesday, April 5, 2016 - 2:58:08 PM
Last modification on : Tuesday, November 16, 2021 - 4:56:33 AM
Long-term archiving on: : Wednesday, July 6, 2016 - 2:20:11 PM

File

nhess-11-2285-2011.pdf
Publisher files allowed on an open archive

Identifiers

Citation

F Girault, C Poitou, F Perrier, B. P. Koirala, M Bhattarai. Soil characterization using patterns of magnetic susceptibility versus effective radium concentration. Natural Hazards and Earth System Sciences, Copernicus Publ. / European Geosciences Union, 2011, 11, pp.2285-2293. ⟨10.5194/nhess-11-2285-2011⟩. ⟨insu-01298112⟩

Share

Metrics

Record views

29

Files downloads

98