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Hydrodynamic traps are characterized by low velocity of fluid filtrations in regions of relativily low pressure potentials and by not-horizontal contacts of oil and water or gas and water. Typical hydrodynamic traps are also those, which are to find
in the flanks of anticlines and monoclines or in structurally noses of terraces, holding by hydrodynamic forces. The research of such traps is only possible by use of a complex of special geological and hydrodynamical methods. Of course, here it is necessary
to combinated these methods with those for study of oil and gas reservoirs by petroleum engineering. In future the hydrodynamic traps will be have a great lot of oil and gas potential for the humanity. When the use of oil and gas in all countries is growing
in the same way how in past, so the hydrodynamic traps in far future can be to obtain the first place in the discovery of oil and gas fields.

Spatial variability of textural and hydrodynamic properties in a soil unit of the Rinzelbach study catchment,Vosges (France)

Hydrodynamic interpretation of a boulder berm and associated debris-torrent deposits

Initiation of river meandering

The purposes of this paper are : 1) to review current hydrodynamic concepts related to meander initiation| and 2) to provide direction for future geomorphologic investigations so that they may contribute directly to theory enhancement. The approach

The study of groundwater tables variations due to ocean-tide effects in a coastal aquifer may yield its hydrodynamical characteristics. Such a study has been attempted about a zone of the limestone of the Miocene of Algarve (Portugal). Two
general hydrodynamical behaviour. The model that gives the most satisfying reconstitutions of the observations points out a seepage situation which fits quite well to the known geological conditions of the aquifer. (The AA).

A hydrodynamic and a dispersion model have been devised. Both models are two-dimensional, vertically integrated, and are solved numerically with a multioperational finite difference scheme (grid 300 300 m). (LW).

The paper is about fluid motions that are strongly influenced by Coriolis forces. It outlines a variety of experimental and theoretical studies of basic hydrodynamic and magnetohydrodynamic processes in rotating fluids and mentions various

1) BENEFICIAL AND ADVERSE EFFECTS OF EXCAVATION OF AN INCREASING NUMBER OF GRAVEL PITS IN ALLUVIAL FORMATION TO SUPPLY BUILDING MATERIAL AND BACKFILL. 2) HYDRODYNAMIC EFFECT OF THE FREE WATER IN THE PITS. INVESTIGATIONS REQUIRED PRIOR TO PROJECT

and redistribution of water. Development of an experimental analysis of the processes of infiltration, redistribution, and determination of hydrodynamic properties of each layer of soil during the redistribution of water without and with evaporation through the soil

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