Vol. 47 No. 1 (230) (2013)

Geochemical anomalies of trace elements of both geogenic and technogenic origin occur in soils distributed in various ore fields. The distribution patterns of element concentration in soils are primarily influenced by the bedrock with different types of endogenic geochemical anomalies, and by the soil forming processes, which modify the basic geochemical composition and redistribute the content of metals within the soil profile. Alteration processes may lead to the release of potentially toxic elements, particularly heavy metals, into the environment.

The changes of subterranean water composition were monitored to estimate the creation and evolution of deformations and settlings in Voghjaberd's landslide field. Chemical formations were found in the water compounds, which evidenced the existence of deeper biochemical erosion, gas-hydrodynamic pressure, which directly are connected with deformations and settlings.

In the article some implications of technological processes on the change of basic components of the environment are considered that are observed in some of well intakes in Republic. The need to reassess (specify) the exploitation resources of well intakes of Armenia is established. The hydrodynamic method in combination with mathematical modelling is suggested for implementation and revaluation of hydrogeological account of borehole water withdrawal.

The article is devoted to velocity prognosis of a swelling landslide mass movement for the case when swelling processes occur and lead to decreasing of shear strength and viscosity factor. According to laboratory tests and theoretical development we obtain the results when soil's swelling processes are absent, the changes of velocity of landslide mass movement through depth is described according to quadratic equation $V_y=\rho g\left(Hy-y^2 / 2\right)\sin \alpha /\eta$, but for swelling soils the relationship is linear $V_y=\left[ y+\left(H-\sigma_{sw} /\rho g\right)\right]\sin \alpha / k \tan \Psi$.

The filtration coefficient of dry grounds of the aeration zone of investigated territory has been determined on the data of experimental pouring in wells. The received data can be used during working out measures of decrease ground waters' level and their removal, necessary for reconstruction of the underground, as well as for making various filtration calculations, connected with the projecting and construction of different engineering constructions in the zone of aeration.

Comparison of spent labor resources and effectiveness estimation of the same geodetic network creation by using conventional and satellite technology are presented in the article. All of the necessary works were carried out on the same territory in Geodynamic Testing Ground near Yerevan. As a result, the creation of geodetic network by satellite technology is 3.59 times as effective as conventional triangulation method. Besides the abilities of satellite technology and the positive properties are enumerated in contrast with conventional methods.

Service is comparatively a new object of geographical study. As sociologisation and humanization of geography raise interest in the study of regional differences in life quality of population, which mainly depends on the level of service. The main objectives of geography service: a) to identify patterns of territorial organization of service; b) to identify territorial differences in service development and to assess the level of service in different territorial units; c) to identify the characteristics of the service in different geographical conditions.

Nowadays Geography is one of the most constructive sciences in the world. Due to the inner reflection it creates new categories such as geosystem. In this research the category of geosystem was analyzed and the integral definition of it was given. On this basis the role of geosystem was grounded in the sustainable development process of economical systems.

The risk of mudflow phenomena, as well as damages caused in Lori region have been estimated by scheme of mudflow classification according to the formula proposed by the UN (with some modifications). This is a step to forecasting mudflows.

On the occasion of the 75th anniversary of the birth of Doctor of Geographical Sciences, Professor Vladimir R. Boynagryan.