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Earth, Planets and Space
Fig. 4 | Earth, Planets and Space

Fig. 4

From: Magnetic properties of surficial sediments in Lake Ogawara on the Pacific coast of northeastern Japan: spatial variability and correlation with brackish water stratification

Fig. 4

Plots of magnetic susceptibility (measured in 2011 and 2015), ARM intensity at an 100 mT AF and 0.1 mT biasing field (measured in 2012 and 2015), and IRM intensity at 1.2 T (measured in 2012 and 2015) versus water depth. Intensity of the principal component with a narrow coercivity range at around 40 mT (Comp 1) is shown in the IRM panel. Also shown are color index values and TOC contents of the sediments, bottom water temperatures, salinity, and dissolved oxygen contents at the sampling sites (Seto et al. 2012). Based on the water temperature and salinity, the water column has been divided (dotted lines) into the epilimnion (0–8 m), metalimnion (8–18 m), and hypolimnion (deeper than 18 m)

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