ISSN:
1432-0495
Keywords:
Key words Magnetic susceptibility
;
Sea-floor sediments
;
Heavy metals
;
Hong Kong
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract Magnetic susceptibility measurements were conducted on 24 vibrocores obtained from an area located off the northeastern coast of Lantau Island in Hong Kong. High intensities of magnetic susceptibility were detected in the uppermost sections of the majority of the cores. Several magnetic parameters measured for one of the cores suggest that the variations in the magnetic characteristics over depth are mainly due to varying concentrations of the magnetic minerals. Since a strong correlation has been found between magnetic susceptibility and the heavy metals Pb, Cu, Zn and Cr, an anthropogenic contamination origin is thought to be the cause. The present study shows that magnetic susceptibility is a fast, inexpensive and non-destructive method for the detection and mapping of contaminated sediments.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s002540050322
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