Number of the records: 1

Anisotropies of in-phase, out-of-phase, and frequency-dependent susceptibilities in three loess/palaeosol profiles in the Czech Republic, methodological implications

SYSNO ASEP	0479081
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Anisotropies of in-phase, out-of-phase, and frequency-dependent susceptibilities in three loess/palaeosol profiles in the Czech Republic, methodological implications
Author(s)	Hrouda, F. (CZ) Chadima, Martin (GLU-S)_{RID, SAI} Ježek, J. (CZ) Kadlec, Jaroslav (GFU-E)_{ORCID, RID}
Source Title	Studia geophysica et geodaetica. - : Geofyzikální ústav AV ČR, v. v. i. - ISSN 0039-3169 Roč. 62, č. 2 (2018), s. 272-290
Number of pages	19 s.
Publication form	Print - P
Language	eng - English
Country	CZ - Czech Republic
Keywords	anisotropy ; out-of-phase susceptibility ; frequency-dependent susceptibility
Subject RIV	DB - Geology ; Mineralogy
OECD category	Geology
Subject RIV - cooperation	Institute of Geology - Geology ; Mineralogy
R&D Projects	IAAX00130801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
Institutional support	GFU-E - RVO:67985530 ; GLU-S - RVO:67985831
UT WOS	000433209100007
EID SCOPUS	85031499401
DOI	10.1007/s11200-017-0701-y
Annotation	The relationship between the anisotropy of frequency-dependent magnetic susceptibility (fdAMS) and the anisotropy of out-of-phase magnetic susceptibility (opAMS) was investigated theoretically and also empirically at three loess/palaoesol profiles in Prague and in Southern Moravia. The data treatment was made in terms of mean susceptibility, degree of AMS, and orientations of principal susceptibilities. It has shown that the fdAMS and opAMS can serve as indicators of the preferred orientations of ultrafine magnetic particles that are on transition between superparamagnetic and stable single domain states in rocks, soils and environmental materials. In loess/palaeosol sequences, the fdAMS and opAMS correlate reasonably, because they are due to magnetic particles of similar grain sizes. The fdAMS and opAMS can be both coaxial with standard AMS (i.e. anisotropy of in-phase susceptibility - ipAMS) or non-coaxial indicating slightly different orientations of viscous magnetic particles.
Workplace	Geophysical Institute
Contact	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Year of Publishing	2019

Number of the records: 1