Rock magnetic study of fluvial Holocene soil from Buenos Aires province (Argentina)

Vasquez, Carlos Alberto; Nami, Hugo G.

doi:10.1186/bf03352634

Earth Planet Sp

2006

DOI: 10.1186/bf03352634

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Rock magnetic study of fluvial Holocene soil from Buenos Aires province (Argentina)

Carlos Alberto Vasquez

Hugo G. Nami

Abstract: The magnetic characteristics of soils are widely used in environmental and paleoclimatic investigations for studying the several factors involved in the soil formation process. We propose here a new analytical tool that takes into account the variations in magnetic properties correlated with grain sizes and concentrations of ferrimagnetic minerals. This analytical tool is based on a mathematical model of well-established magnetic properties in samples of known grain sizes and was used in this study to determin… Show more

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Cited by 2 publications

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Characterization of soil magnetic susceptibility: a review of fundamental concepts, instrumentation, and applications

Shirzaditabar

Heck

2022

Can. J. Soil. Sci.

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The characterization of magnetic susceptibility (MS) has become an accepted technique in soil science. This review examines the concept of volume and mass-specific MS, magnetism, frequency dependence, and thermal behavior of MS, as they pertain to soil material. A comparison is presented of the two types of instrumentation for measuring soil MS, based on magnetic field and electromagnetic induction (EMI). These are discussed with respect to applications including magnetic granulometry, detection of pollutants, identification of organic matter, the delineation of drainage class, paleo-environmental studies, archaeology, as well as soil erosion and degradation. Instruments that use magnetic fields can precisely measure the MS of small amounts of soil, thinly deposited layers or soil exposures, but cannot effectively measure materials at distances ≥10 cm from the sensor. EMI instruments, instead, are capable of quickly measuring apparent MS of a finite volume of the soil, and are utilized in mapping of soil MS in agricultural and archaeological investigations; however, the measured apparent MS values need to be further processed to give the real volume MS values of soil layers/segments. Although both kinds of instruments are widely used in soil science, their measured data are not interchangeable. Future work should be conducted to increase the understanding of the comparability of these instruments to find better utility among soil scientists.

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Characterization of soil magnetic susceptibility: a review of fundamental concepts, instrumentation, and applications

Shirzaditabar

Heck

2022

Can. J. Soil. Sci.

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Geotechnical magnetic–similitude–gravity model testing method

Zhou

Chen³

et al. 2019

International Journal of Physical Modelling in Geotechnics

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Physical modelling under the gravitational field between 0 and ng plays a key role in both terrestrial- and aerospace-geotechnical engineering. A geotechnical magnetic–similitude–gravity model testing (GMMT) method is newly proposed to provide an alternative approach to the current physical modelling methods. The theoretical criteria for achieving a magnetic field to simulate the gravitational field are presented first, based on which an exact simulation of the stress field is achieved between the physical model and its corresponding prototype. A GMMT equipment is then designed and manufactured, and a related procedure for obtaining its control and input parameters is presented. Accordingly, the preparation of the model material is demonstrated utilising a kind of magnetically sensitive granular (MSG) media. The relationship between mechanical properties, magnetisation, magnetic–similitude–gravity and magnetic powder content of the MSG media are further investigated, and the influences of both magnetising field and magnetisation process are shown to be negligible in terms of mechanical behaviour. A series of physical modelling of the bearing capacity of granular media under low-gravity conditions is finally performed using the GMMT equipment. The results show good agreement with previous data obtained by the parabolic flight aircraft.

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Rock magnetic study of fluvial Holocene soil from Buenos Aires province (Argentina)

Cited by 2 publications

References 31 publications

Characterization of soil magnetic susceptibility: a review of fundamental concepts, instrumentation, and applications

Characterization of soil magnetic susceptibility: a review of fundamental concepts, instrumentation, and applications

Geotechnical magnetic–similitude–gravity model testing method

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