Ground Distortion in the Sredneamurskaya Lowland Caused by Seasonal Freezing

Abstract

We undertook a field survey of ground surface deformation under the influence of the frost heave process. The study has been conducted on the testing sites located in the different areas of the Sredneamurskaya lowland terrain (South of the Far East). It has been established that there is the most advanced alteration of the surface in the flood plains and broad water course valley bottoms, and there is a minimal alteration aslope and at the nearby water-dividing flat areas. Ground surface deformation is more active in the areas where the earthworks had been executed in comparison with the natural areas.

Migrational activity of elements and chemical soil pollution during deposit exploitation in Amur River region and Okhotsk Sea region

“…Soils have acidic reaction of the environment (pH w 3.9-5.8), their profile is enriched with iron and manganese oxides, and their soluble forms represent 35-45% of the total composition. Distribution of oxalate-soluble forms of amorphous iron correlates to the level of fulvic acid structural groups content [10,13].…”

“…More than 60% of deposits exploited in Russia are located in the Far East. Extraction technology leads to soil devastation [8,10]. In the mountain regions near Amur River and Okhotsk Sea the most danger comes from overburden mining, which contributes to chemical pollution of the area.…”

“…The ecological problem of soil devastation and their chemical pollution becomes more and more pressing in deposit exploitation regions [10,16]. Evaluation of migrational activity of elements in the soil volume and the influence of mining industry on the chemical soil pollution is the main objective of this research.…”