Porosity distribution by computed tomography and its importance to characterize soil clod samples

被引：27
作者：
Pires, Luiz F. [1 ]
Brinatti, Andre M. [1 ]
Saab, Sergio C. [1 ]
Cassaro, Fabio A. M. [1 ]
机构：
[1] State Univ Ponta Grossa UEPG, Dept Phys, Lab Soil Phys & Environm Sci, BR-84030900 Ponta Grossa, PR, Brazil
来源：
APPLIED RADIATION AND ISOTOPES | 2014年 / 92卷
关键词：
Gamma-ray attenuation; Soil variability; Am-241; Soil structure; FWHM; ELEMENTARY AREA REA; BULK-DENSITY; WATER;
D O I：
10.1016/j.apradiso.2014.06.010
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Gamma-ray computed tomography (CT) was employed to study the soil quality of clod samples used to investigate porosity (phi). Samples with volumes varying from 50 to 100 cm(3) were collected from the soil surface. 2D CT images were obtained with millimetric resolution. Porosity distribution analyses were carried out to infer the soil clod structure. Results obtained provided a new insight on the variability of internal clod structure due to the large amount of data analyzed, information that is not provided by traditional methods used in physics applied to soil. (C) 2014 Elsevier Ltd. All rights reserved.
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收藏
页码：37 / 45
页数：9
相关论文
共 33 条
  • [1] [Anonymous], SOIL SCI SOC AM BOOK
  • [2] [Anonymous], 1971, SOILS FELT, DOI DOI 10.1016/J.JHYDROL.2003.08.018
  • [3] [Anonymous], MICROVIS PROGRAM MAN
  • [4] [Anonymous], 1998, WORLD REF BAS SOIL R
  • [5] Effect of sampling volume on the measurement of soil physical properties: simulation with x-ray tomography data
    Baveye, P
    Rogasik, H
    Wendroth, O
    Onasch, I
    Crawford, JW
    [J]. MEASUREMENT SCIENCE AND TECHNOLOGY, 2002, 13 (05) : 775 - 784
  • [6] Bear J., 1972, Dynamics of Fluids in Porous Media
  • [7] Representative Elementary Length to Measure Soil Mass Attenuation Coefficient
    Borges, J. A. R.
    Pires, L. F.
    Costa, J. C.
    [J]. SCIENTIFIC WORLD JOURNAL, 2014,
  • [8] Representative elementary area (REA) in soil bulk density measurements through gamma ray computed tomography
    Borges, Jaqueline A. R.
    Pires, Luiz F.
    [J]. SOIL & TILLAGE RESEARCH, 2012, 123 : 43 - 49
  • [9] CT derived porosity distribution and flow domains
    Císlerová, M
    Votrubová, J
    [J]. JOURNAL OF HYDROLOGY, 2002, 267 (3-4) : 186 - 200
  • [10] Representative elementary volume estimation for porosity, moisture saturation, and air-water interfacial areas in unsaturated porous media: Data quality implications
    Costanza-Robinson, Molly S.
    Estabrook, Benjamin D.
    Fouhey, David F.
    [J]. WATER RESOURCES RESEARCH, 2011, 47
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