On the State and Main Priority Directions of GNINGI OJSC Research Activities for the Nearest Future. A. F. Zenkov Navigation and Hydrography. 2014. No. 38. . 713.

The generalized results of GNINGI OJSC development are presented. The state and the main priority directions of the research activities of the Institute for the nearest future are evaluated.

Key words: GNINGI OJSC, results of development, priority directions, research activities.

On Safety Provision for Visual Aids to Navigation against External Influence. K. V. Blinkova Navigation and Hydrography. 2014. No. 38. . 1421.

The results of explorations intended to evaluate the mutual influence of aids to navigation structures under the natural and technogenous impacts are presented.

Key words: visual aids to navigation, seismostability, mutual influence.

On Priority Directions of Development for Import replaceable Means for Sea Bottom Survey and Exploration. A. F. Zenkov Navigation and Hydrography. 2014. No. 38. . 2229.

The problems of creating the national technical means of the bottom relief survey and exploration under the conditions of import replacement are considered. The priority directions of their development are stated.

Key words: technical means of bottom relief and explorations, import replacement, priority directions of development.

On the Main Requirements to Development of Complex Technology for Search and Identification of Potentially Dangerous Objects in the Arctic Region of the Russian Federation.

Y. N. Balesny, P. G. Brodsky, E. I. Rudenko Navigation and Hydrography. 2014. No. 38. . 3035.

The normative legal basis in the sphere of ecological safety for the seas of the Arctic zone is analyzed. The necessity to develop the complex technology for search and identification of submarine potentially dangerous objects is shown. The main statements and principal solutions intended to develop the above technology are formulated.

Key words: main requirements, complex technology, search and identification, submarine potentially dangerous objects, the Arctic seas.

Limitation for Possible Values of Harmonic Parameters of Tides. Y. N. Zhukov Navigation and Hydrography. 2014. No. 38. . 3643.

In the theory of the harmonic analysis of tides, there is no definition of any limitation for harmonic constants values for various points located within one water area. It is shown that such limitations do exist. They are revealed due to the existence of synchronization of the tidal variations for the water area space.

Key words: tides, harmonic constants.

Algorithm of the Automated Construction of the Kronrod-Reeb Tree. Y. N. Zhukov Navigation and Hydrography. 2014. No. 38. . 4450.

The traditional algorithms for constructing the Kronrod-Reeb tree for the relief are based on employment of the isohypses constructed for the differentiable relief surface. The algorithm for constructing the Kronrod-Reeb tree using the discrete description of the relief in the form of Morse-Smale cells is presented.

Key words: the surface of relief, topology, the Kronrod-Reeb tree, Morse-Smale cells.

Preparation of Data for Constructing the Seamless Bottom Surface Using the Electronic Navigation Charts. L. D. Yastrebov, A. G. Karmanov Navigation and Hydrography. 2014. No. 38. . 5056.

The practical necessity for the automatic construction of the isobaths is shown. The problems of using the sections of the surface as isobaths are considered. The suggested algorithm that enables to construct automatically the isobaths on the electronic navigation charts is described. This algorithm can also be used to construct the isobaths using the depth measurement data, taking the set variations in depth and other parameters into account.

Key words: construction of the isobaths, triangulated surface, hydrography, navigation charts, survey data, S-57 Standard, algorithm, interpolation.

Some Aspects of Sonar Search Technology for Bottom Objects. N. A. Nesterov Navigation and Hydrography. 2014. No. 38. . 5765.

Some aspects of sonar search technology for bottom objects are considered. It is noted that modern sonar systems are effective means used for search and examination of bottom objects, both silted and located in the soil. The effectiveness of search operations is largely determined by the technology of using the equipment. An important role is also played by the detailed information about the characteristics of objects and physico-geographical conditions of the search area. The article is of a practical nature and can be used when solving the tasks of planning and carrying out the operations.

Key words: side scan sonar, multibeam echosounder, tow fish, sonar survey, bottom profiler.

Evaluation of Climate Severity Degree of Northern Eurasia in Winter Period. S. I. Mastryukov, N. V. Chervyakova Navigation and Hydrography. 2014. No. 38. . 6673.

New climatic indexes that can be used to evaluate the influence of cold on man are proposed. The first of them is the absolute minimum of wind chill equivalent temperature that is important for adequate selection of means of individual protection against the cold. The second is the time period with wind chill temperature below the set limits that is important for technical-economical substantiation of effectiveness of projects for the Far North development. The calculation of the equivalent temperature has been carried out using the new formula, the contour maps of the new indexes have been drawn using the data of the coastal meteorological observations in the northern part of Eurasia for 2007 2014.

Key words: equivalent temperature, wind chill of man, safety of man, health, biometeorology, development of shelf of the Arctic seas.

Analysis of the Radiolocation Reflectivity Field Based on the Method of Optimal Interpolation. I. A. Gotyur, V. Y. Zhukov, A. A. Korystin Navigation and Hydrography. 2014. No. 38. . 7483.

The problems of using the method of optimal interpolation for the secondary processing of radiometeorological information are set forth. The mathematical statement of the problem and the successive order of its solution as well as the advantages of this method are presented.

Key words: meteorological radiolocation, secondary processing of information, artefact, optimal interpolation, radiolocation reflectivity.

Review of Current National and Foreign Methods of Evaluation of Wind Chill of Man. S. I. Mastryukov, N. V. Chervyakova Navigation and Hydrography. 2014. No. 38. . 8390.

The curremt methods used to evaluate the wind chill of man are reviewed. The results of comparative evaluation of some indexes of wind chill are presented. The disagreement of the national and foreign methods used to calculate the wind chill equivalent temperature of man and the continuous safe stay in cold weather has been revealed. It is recommended to carry out the regionalization of the Russia territories based on the biometeorological and technical-economical indexes connected with the influence of cold on man.

Key words: equivalent temperature, absolute minimum of temperature, wind chill of man, safety of man, health, biometeorology, development of shelf of the Arctic seas.

On the Occasion of 130-th Birthday Anniversary of Vladimir V. Kavrayskiy. N. N. Neronov Navigation and Hydrography. 2014. No. 38. . 9194.

The article is devoted to the memory of the outstanding national hydrographer and geodesist-astronomer Vladimir V. Kavraisky (18841954).

Key words: Vladimir V. Kavraisky, astronomy, geodesy, cartography, hydrography.