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51.
R. Yu. Tarakanov 《Oceanology》2011,51(4):588-598
The advent of the era of satellite observations of the ocean surface has resulted in a considerable complication of views
on the structure of currents in the World Ocean. Up to eight jets came to be distinguished in the zone of the Antarctic Circumpolar
Current (ACC). To identify these jets, it is conventional to use qualitative criteria relating a jet’s position to the isoline
of a characteristic (temperature, for instance) on any near-horizantal surface. In the present work, based on data of sections
and climatology of the World Ocean Circulation Experiment (WOCE) program, we examine the temperature patterns of the subsurface
waters of the Southern Ocean, which are commonly used for recognition of fronts. The focus is on the southern jets of the
ACC in the Eastern Pacific Antarctic. There are two groups of criteria for these jets, which imply that position of the latter
is determined from a certain isotherm on the surface of the minimum (maximum) potential temperature of the Winter water (Upper
Circumpolar Deep Water). However, the results of our analysis show that, in fact, the WOCE climatology data allow one to formulate
temperature criteria only for the second of the above groups and only for individual sectors of the Southern Ocean-specifically,
for the study area. These criteria serve as the basis for determining localization of the southern jets of the ACC in the
WOCE sections in this ocean’s region. We also show that the temperature increased by about 0.1°C from the mid-1990s to the
mid-2000s in the layer of maximum temperature of the Upper Circumpolar Deep Water in the zone of southern jets of the ACC. 相似文献
52.
R. Yu. Tarakanov 《Oceanology》2009,49(5):607-621
The quantitative features and circulation of the Antarctic bottom water (AABW) in the Scotia Sea are investigated using an
original procedure for the determination of the boundaries between the water masses. It is shown that the AABW is effectively
transferred across the Antarctic Circumpolar Current (ACC) from the regions on the south flank of this current where the AABW
penetrates into the Scotia Sea. This transfer results in the abyssal water cooling and freshening in the Yaghan Basin of the
north Scotia Sea. Some rises and depressions in the bottom relief of the western and northern Scotia Sea are important features
that impact the AABW transfer. It is shown that there is an additional path of the AABW transit transport to the North Atlantic
passing through the western Scotia Sea. The existence of the semienclosed cyclonic abyssal water circulation in the South
Shetland Trench and the westward transport of the Atlantic AABW along the Antarctic slope foot into the Pacific are proved. 相似文献
53.
An improved interpretation of the largest anomalies of gravity field is presented herewith. The anomalous potential, gravity and deflection of the vertical have been used at a single point. The depth of the sources does not depend on the anomalous density and the form of the body. The interpretation is unique in the physical sense. 相似文献
54.
E. G. Morozov R. Yu. Tarakanov T. A. Demidova N. I. Makarenko 《Doklady Earth Sciences》2017,474(2):653-656
It has been shown that the total transport of Antarctic Bottom Water (AABW) in the northern fractures (Kane, Cabo Verde, Marathon) are one order of magnitude smaller than in the southern fractures (Vema, Doldrums, Vernadsky). The estimates of AABW transport through this group of fractures based on measurements in 2014 were approximately 0.28 Sv, which is about 25% of the transport through the Vema Fracture Zone. However, the coldest water flows through the Vema Fracture Zone. 相似文献
55.
Yu.A. Tarakanov T.N. Cherevko O.V. Karagioz 《Physics of the Earth and Planetary Interiors》1983,31(1):54-58
This paper is concerned with solving the problem of the nature of superhydrostatic flattening of the Earth. An unambiguous method for the interpretation of gravity anomaly has been devised. 相似文献