A series of eddy-resolving ocean simulations in the world ocean - OFES (OGCM for the Earth Simulator) project

Author(s):  
H. Sasaki ◽  
Y. Sasai ◽  
S. Kawahara ◽  
M. Furuichi ◽  
F. Araki ◽  
...  
Keyword(s):  
Author(s):  
D.A. Zelvin ◽  
A.G. Toporkov

The article considers features of the implementation of the launching scheme for a group of small spacecraft at the stage of the Volga type launch unit operation during the transition from the reference orbit formed by the “Soyuz 2.1 v” launch vehicle to the intermediate orbit, where the small spacecraft separate. The orbit with synchronous precession velocity of the ascending node longitude with respect to the working orbit is chosen as an intermediate orbit, to which the small spacecraft transfer independently, using their propulsion system, after separation from the launch unit. The article solves the problem of choosing the rational orientation of the launch unit during the release of pulses, in the passive flight segments, as well as for the safe separation of the small spacecraft in an intermediate orbit with synchronous precession. Parameters of maneuvers to flood launch unit after separation of small spacecraft are calculated. Numerical results of fuel consumption for direct deorbiting and selection of maneuvering intervals for launch unit submersion in a given area of the world ocean are obtained. The calculations of the Earth shadow- and semishadow-sunlight time for small spacecraft are performed.


Author(s):  
Yuriy D. Shuisky

Based on the data of theoretical developments in the fields of ocean geography and system-geographical analysis, a hierarchical scheme of natural systems in the water layer of the World Ocean has been examined. The aim of the work is to carry out the first attempt to compare landscapes on land, natural systems in the coastal zone (the zone of contact between land and the World Ocean) and those in the World Ocean. The differentiation of the oceanic natural environment which is a possible version of a systematised list of systems ranging from individual oceans to individual eddies (or impulses) in the deep sea and on the shelf of shallow water are discussed. This work therefore, attempts to find new ways for the synchronous study of the hierarchical series of the coastal zone and the water layer of the World Ocean, along with land landscapes as part of the geographic shell of the Earth. This approach will make it possible to obtain a series of systems for the entire geographic envelope. This is a promising approach for an indebt development of physical geography in general.


2021 ◽  
Vol 291 ◽  
pp. 02015
Author(s):  
Alexandr Kiselyov ◽  
Marina Mayorova ◽  
Nadezhda Shishkina ◽  
Maxim Markin

Today, the rate and volume of human use of natural resources are increasing at a very high speed. Pumping out huge amounts of oil and gas from the Earth’s interior, which cannot quickly recover, no one calculated how this, for example, would affect all the parameters of the movement of our planet and, accordingly, the change in the living conditions of people. Cutting down forests and building dams on rivers, no one calculated how this would affect climate change on the Earth in the future, etc. At the same time, the economic activity of organizations under competition in various fields of activity, including interstate, aimed at activating people’s consumer behavior, increasingly aggravates the already difficult environmental situation, and the mainland of the Earth, the world ocean, and the near space began to turn into a “garbage dump” from the results of human activities and production waste. And as a result, humanity faces the issue of its survival on the Earth, associated with the need for rational use of natural resources and their timely reproduction as a key factor in its economic development. Today it is necessary to develop and implement the concept of responsible consumption in people’s economic activities, which enables to take care of the world’s natural resources and to exclude the possibility of an environmental catastrophe associated with the “littering” of their habitat.


The Red Sea Discussion Meeting originated in the desire of the other organizers to bring together as many as possible of the earth scientists who have been working recently in that area to examine the latest evidence and ideas on its structure and origin, to see how they accord with modern continental and sea-floor spreading concepts. The Red Sea, Gulf of Aden and Afar crustal depressions, now known to be continuous with the extension of the world ocean rift system, have been claimed as a manifestation of crustal separation, but some Earth scientists still consider that the evidence can be explained by less drastic crustal rifting. Definite solutions to the many outstanding problems were not expected but discussions would clearly assist further researches.


The disposal of waste substances by industrial society is leading to contamination of the world ocean. The production of man-made solid waste is in excess of 0.5 x 10 9 tonnes per year. A growing fraction is not susceptible to organic breakdown or recycling, and production is increasing exponentially as more regions become industrialized. Present disposal practices consist of incineration, of dumping at sea, and of discarding material on land. As a result, foreign substances are being added in cumulative fashion to the atmosphere and to the waters of the world ocean. Once released in the terrestrial fluid envelope, noxious matter is subject to uncontrollable dispersal. Lodgement of waste in sedimentary sinks would cause its fixation under cover becoming thicker. A disposal system is outlined, aimed at standardization, and having the stages: (1) collection; (2) compaction of waste into blocks; and (3) its sea transportation to tectonic sinks. Deposition in subduction sinks would result eventually in the ingestion of waste material by the upper mantle. Deposition in sinks of the extensional class would result in its burial for periods without limit so far as civilizations are concerned. In both cases, it would be necessary to guard against reworking, and to examine the effect of exudations before burial.


2014 ◽  
Vol 2 (1) ◽  
pp. 935-961 ◽  
Author(s):  
M. N. Dubrov ◽  
V. A. Volkov ◽  
S. P. Golovachev

Abstract. The most destructive disasters such as the strongest earthquakes and the most powerful tropical cyclones can be treated as tightly coupled geophysical phenomena in their origin. Results of comparison of geophysical field variations and seismic activity of the Earth have evidently shown the correlation between lithosphere–atmosphere interactive disturbances, tropical cyclonic activity in the World Ocean, and seismic processes in the solid Earth. The ground-based laser interferometer techniques being supplemented by satellite observational systems can be considered as promising methods for common earthquake and hurricane monitoring and prediction.


Author(s):  
S. V. Goshovskyi ◽  
Oleksii Zurian

In the bowels of the Earth and in the oceans of the World Ocean, there are practically unlimited resources of natural gas in the solid hydrate state, available to most countries of the world community. The development of gas hydrate deposits is based on the process of dissociation (separation), in which the gas hydrates break down into gas and water. In these technologies, three methods for the development of gas hydrate deposits are proposed: pressure reduction, heating and inhibitor input. Based on the systematized data, the above methods are suggested to be attributed to traditional methods, as the most studied and classical ones. It is proposed to identify a number of methods that imply the same results, but use other physical approaches and designate them as unconventional. 1. Decomposition of methane hydrates by nanoparticles. In this method, the use of nanoparticles commensurate with the gas hydrate cell (supplied as part of a hydrodynamic jet) is proposed for efficient and safe destruction of the gas hydrate. The application of nanotechnology provides effective and consistent study of the entire surface of the aquatic deposit of gas hydrates, with the necessary rate of their destruction and the production of planned volumes of methane. 2. Decomposition of methane hydrates by microorganisms (bacteria). In this process, in the process of the life of the bacteria, a gas must be released, replacing in the clathrate structure a molecule of methane per molecule of the given gas. In addition, the process must be controlled by the use of external factors that provide nutrition to the bacteria and at the same time, light, chemicals, electromagnetic radiation, etc. can be stopped at any time, which is absent in the natural conditions of formation of the gas hydrate.


2006 ◽  
pp. 114-125 ◽  
Author(s):  
G. Popov

Exiting socialism by almost a third of the earth population appears to be the most prominent event of the late XX century. The author makes an attempt to formulate some challenges of this process and thus a theory of exiting socialism. First, he inquires into the concept of exiting socialism as it exists in the world. Then he analyzes real experiences in this field. The research enables the author to outline the main economic, governmental and social challenges of such exit - from municipal economy to science and culture.


2006 ◽  
pp. 133-146 ◽  
Author(s):  
K. Arystanbekov

Kazakhstan’s economic policy results in 1995-2005 are considered in the article. In particular, the analysis of the relationship between economic growth and some indicators of nation states - population, territory, direct access to the World Ocean, and extraction of crude petroleum - is presented. Basic problems in the sphere of economic policy in Kazakhstan are formulated.


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