Водная миграция химических элементов в ландшафтах вулканических островов центральных Курил (на примере О. Матуа)

The basic characteristics of atmospheric, ground, and surface waters in the contact zone of volcanic structures and coastal terraces are revealed according to hydrochemical sampling data for the Matua Island (the Central Kuriles). The distinctions in pH value, mineralization and the content of major ions, nutrients (Si, P), and iron-group trace elements (Ti, V, Mn, Fe) are noted. Values of Ca, Mg, Si, Рmin, V, and Ti are suggested as indicators for revealing the role of lithogenic factor in the formation of infiltration waters. It is shown that the concentrations of dissolved forms of these elements vary depending on the location of groundwater discharge zones and decrease in the waters of low coastal terraces. Various mobility and contrast of chemical elements behavior are established using the water migration coefficients, as well as possible accumulation of Fe, Mn, and Рorg in streams and lakes in the vicinity of hydromorphic bog landscapes.