Stream water chemistry in northern part of the Miura Peninsula, Kanagawa Prefecture.

Abstract

Investigation was conducted on substance concentrations at ordinary water levels in stream waters of the Nameri River in Kamakura City, northern part of the Miura peninsula. The resultsshowed that the average Cl^- and NO₃^- concentrations in stream waters of the Nameri River were 319 μM and 41.3 μM, respectively. Therefore, it was found that the steam waters of the Nameri River are significantly influenced by atmospheric deposition and sea salt. However, the average NO₃^- concentration was lower in the stream waters in northern part of the Miura peninsula than around the metropolitan areas due to the impact of denitrification. This suggests that the NO₃^- concentration in stream waters originating from forests on hilly lands is strongly related to the topography.