Počet záznamů: 1

Detection of the pedogenic magnetic fraction in volcanic soils developed on basalts using frequency-dependent magnetic susceptibility: comparison of two instruments

SYSNO ASEP	0470216
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Detection of the pedogenic magnetic fraction in volcanic soils developed on basalts using frequency-dependent magnetic susceptibility: comparison of two instruments
Tvůrce(i)	Grison, Hana (GFU-E)_{RID, ORCID, SAI} Petrovský, Eduard (GFU-E)_{ORCID, RID} Kapička, Aleš (GFU-E)_{ORCID, RID} Hanzlíková, Hana (GFU-E)_{ORCID, RID}
Zdroj.dok.	Geophysical Journal International - ISSN 0956-540X Roč. 209, č. 2 (2017), s. 654-660
Poč.str.	7 s.
Forma vydání	Tištěná - P
Jazyk dok.	eng - angličtina
Země vyd.	GB - Velká Británie
Klíč. slova	magnetic properties ; environmental magnetism ; rock and mineral magnetism
Vědní obor RIV	DE - Zemský magnetismus, geodézie, geografie
Obor OECD	Physical geography
CEP	GA13-10775S GA ČR - Grantová agentura ČR
	LG15036 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
Institucionální podpora	GFU-E - RVO:67985530
UT WOS	000402641600009
DOI	10.1093/gji/ggx037
Anotace	In studies of the magnetic properties of soils, the frequency-dependent magnetic susceptibility percentage (X-FD%) is often used for the identification of ultrafine magnetically superpara-magnetic/stable single-domain (SP/SSD) particles. This parameter is commonly used as an indicator for increased pedogenesis. In strongly magnetic soils, the SP/SSD magnetic signal ( mostly bio-pedogenic) may be masked by lithological signals, making pedogenesis hard to detect. In this study, we compare results for the detection of ultrafine SP/SSD magnetic particles in andic soils using two instruments: a Bartington MS2B dual-frequency meter and an AGICO Kappabridge MFK1-FA. In particular, the study focuses on the effect of pedogenesis by investigating the relationship between specific soil magnetic and chemical properties ( soil organic carbon and pH(H2O)). The values of X-FD% obtained with the MS2B varied from 2.4 to 5.9 per cent, and mass-specific magnetic susceptibility (X-LF) from 283 to 1688x10(-8) m(3) kg(-1), while values of X-FD% and X-LF obtained with the MFK1-FA varied from 2.7 to 8.2 per cent and from 299 to 1859 x 10(-8) m(3) kg(-1), respectively. Our results suggest that the detection of the SP/SSD magnetic fraction can be accomplished by comparing relative trends of X-FD% along the soil profile. Moreover, the discrimination between bio-pedogenic and lithogenic magnetic contributions in the SP/SSD fraction is possible by comparing the X-FD% and X-LF data determined in the fine earth (<2 mm) and the coarse fraction (4-10 mm) samples down the soil profile.
Pracoviště	Geofyzikální ústav
Kontakt	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Rok sběru	2018

Počet záznamů: 1