A comparison of magnetic susceptibility measurement techniques and ferrimagnetic component analysis from recent sediments in Lake Pepin (USA)

2014 ◽  
Vol 414 (1) ◽  
pp. 197-207 ◽  
Author(s):  
Dylan J. Blumentritt ◽  
Ioan Lascu
Keyword(s):  
Magnetic Susceptibility ◽  
Measurement Techniques ◽  
Component Analysis ◽  
Magnetic Susceptibility Measurement ◽  
Lake Pepin ◽  
Recent Sediments

scholarly journals Magnetic susceptibility to identify landscape segments on a detailed scale in the region of Jaboticabal, São Paulo, Brazil

2012 ◽  
Vol 36 (4) ◽  
pp. 1073-1082 ◽  
Author(s):  
Mariana dos Reis Barrios ◽  
José Marques Junior ◽  
Alan Rodrigo Panosso ◽  
Diego Silva Siqueira ◽  
Newton La Scala Junior
Keyword(s):  
Principal Component Analysis ◽  
Cluster Analysis ◽  
Magnetic Susceptibility ◽  
Clay Fraction ◽  
Chemical Properties ◽  
Principal Component ◽  
Component Analysis ◽  
Sao Paulo ◽  
São Paulo ◽  
Agricultural Potential

The agricultural potential is generally assessed and managed based on a one-dimensional vision of the soil profile, however, the increased appreciation of sustainable production has stimulated studies on faster and more accurate evaluation techniques and methods of the agricultural potential on detailed scales. The objective of this study was to investigate the possibility of using soil magnetic susceptibility for the identification of landscape segments on a detailed scale in the region of Jaboticabal, São Paulo State. The studied area has two slope curvatures: linear and concave, subdivided into three landscape segments: upper slope (US, concave), middle slope (MS, linear) and lower slope (LS, linear). In each of these segments, 20 points were randomly sampled from a database with 207 samples forming a regular grid installed in each landscape segment. The soil physical and chemical properties, CO2 emissions (FCO2) and magnetic susceptibility (MS) of the samples were evaluated represented by: magnetic susceptibility of air-dried fine earth (MS ADFE), magnetic susceptibility of the total sand fraction (MS TS) and magnetic susceptibility of the clay fraction (MS Cl) in the 0.00 - 0.15 m layer. The principal component analysis showed that MS is an important property that can be used to identify landscape segments, because the correlation of this property within the first principal component was high. The hierarchical cluster analysis method identified two groups based on the variables selected by principal component analysis; of the six selected variables, three were related to magnetic susceptibility. The landscape segments were differentiated similarly by the principal component analysis and by the cluster analysis using only the properties with higher discriminatory power. The cluster analysis of MS ADFE, MS TS and MS Cl allowed the formation of three groups that agree with the segment division established in the field. The grouping by cluster analysis indicated MS as a tool that could facilitate the identification of landscape segments and enable the mapping of more homogeneous areas at similar locations.

The Transformer Bridge and Magnetic Susceptibility Measurement

1980 ◽  
Vol 11 (3) ◽  
pp. 110-114 ◽  
Author(s):  
B. H. Ridley
Keyword(s):  
Magnetic Susceptibility ◽  
Magnetic Susceptibility Measurement

Rapid magnetic susceptibility measurement for obtaining superficial soil layer thickness and its erosion monitoring implications

Geoderma ◽  
2019 ◽  
Vol 351 ◽  
pp. 163-173 ◽  
Author(s):  
Liang Liu ◽  
Keli Zhang ◽  
Suhua Fu ◽  
Baoyuan Liu ◽  
Mingbin Huang ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Layer Thickness ◽  
Soil Layer ◽  
Magnetic Susceptibility Measurement

AC Magnetic Susceptibility Measurement and Irreversibility Line in (Bi,Pb)2Sr2Ca2Cu3Oy

1992 ◽  
pp. 377-380
Author(s):  
Masaya Watahiki ◽  
Ryozo Yoshizaki ◽  
Hiroshi Ikeda ◽  
Kozo Yoshikawa ◽  
Nobuyoshi Tomita
Keyword(s):  
Magnetic Susceptibility ◽  
Irreversibility Line ◽  
Magnetic Susceptibility Measurement ◽  
Ac Magnetic Susceptibility

Magnetic properties of soils in a designated Natura area (GR4310010, Giouchtas Mountain)

2015 ◽  
Vol 3 (4) ◽  
pp. SAB33-SAB42 ◽  
Author(s):  
Eleni Kokinou
Keyword(s):  
Magnetic Susceptibility ◽  
Surface Soil ◽  
Magnetic Behavior ◽  
High Elevation ◽  
Soil Samples ◽  
Tectonic Activity ◽  
Anthropogenic Factors ◽  
Recent Sediments ◽  
Available Information ◽  
Natural And Anthropogenic Factors

The magnetic behavior of the geologic formations around the Giouchtas or Juchtas Mountain (Mt.) in Central Crete, Greece, has been studied. The magnetic parameters (magnetic susceptibility [MS] and temperature dependence of the magnetic susceptibility) of 160 surface soil samples were interpreted based on available information (e.g., topographic, geologic, and historical) for the area of study. The soil samples have been collected from the low- and high-elevation regions of Giouchtas Mt. The low-elevation region, surrounding a north–south asymmetric ridge (strongly affected by the tectonic activity), is mainly covered by Miocene and recent sediments, whereas the high-elevation region is dominated by limestones. Differences in the spatial distribution of the MS and the thermomagnetic behavior of the soil samples indicated the strong influence of natural and anthropogenic factors on the geologic formations.

SOLID REACTION, OXYGEN ABSORPTION AND AMORPHOUS STATE IN Bi-Ca-Sr-Cu-O SYSTEM

1989 ◽  
Vol 03 (12) ◽  
pp. 949-953
Author(s):  
N.P. ZHU ◽  
L.J. ZHOU ◽  
T.F. LI ◽  
Y.Z. Wang ◽  
Y.S. ZHANG ◽  
...  
Keyword(s):  
Magnetic Susceptibility ◽  
Oxygen Content ◽  
Amorphous State ◽  
Magnetic Susceptibility Measurement ◽  
Oxygen Absorption ◽  
Solid Reaction ◽  
Content Determination

Solid reaction, oxygen relief and absorption in Bi-Sr-Ca-Cu-O system have been investigated by TGA technique. Oxygen contents (x=5.5 and 5.64) for BiSrCaCu 2Ox samples quenched and furnace-cooled were determined, respectively. No oxygen absorption and relief happens below 800°C. Amorphous state can be obtained by heating the sample up to 1000°C and then cooling it quickly. Magnetic susceptibility measurement and oxygen content determination suggest that Cu+ and Cu3+ exist in the quenched and furnace-cooled samples.

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