ABSTRACTS

 


Scientific journal "Pacific Oceanography", volume 1, No. 1, 2003.

Chief editor: Dr. Yuriy N. Volkov, FERHRI, Vladivostok, Russia / E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
The journals can be ordered at: 690600, 24, Fontannaya st., Vladivostok, Russia Kochergin I.E., Department of Engineering Oceanology and Ecological Design (DEO) or by e-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Phone: +7 (4232) 26-73-52

ABSTRACTS

FROM EDITOR
Yu.N. Volkov

Dear colleagues,
This is the first issue of a new international, reviewed and specialized, journal "Pacific Oceanography" published in Vladivostok. Mainly, it will publish results of the recent oceanographic researches conducted in the Northwestern Pacific and its marginal seas. It will also present results of oceanography related topics.
The journal is published in the Far Eastern Regional Hydrometeorological Research Institute (FERHRI) of the Russian Federal Service on Hydrometeorology and Environmental Monitoring. For many years Russian scientists were not actively involved in the international exchange of data and investigation results. In 1960-1990s the soviet and Russian scientists carried out thousands of research marine expeditions in the Pacific and Indian oceans and in the Far Eastern seas and fulfilled many interesting theoretical and experimental works. As a rule, all the research results were published in Russian as monographs or in the departmental proceedings that were not available for the foreign communities.
The publication of "Pacific Oceanography" in English will allow the foreign communities seeing the latest scientific results of the Russian researchers. We also incorporated the historical section in the journal that will present the old selected works of the Russian Far East oceanographers.
In recent years the Russian scientists were actively cooperating with specialists from other countries, first of all, from Republic of Korea, Japan, USA and Canada. Results of joint marine expeditions and researchers published in "Pacific Oceanography" will be a good proof of the establishing international data exchange.
We invite all Russian and foreign scientists dealing with the Pacific oceanography and related topics to contribute your results to our journal. The main criteria for publishing a manuscript or a short scientific report within "Pacific Oceanography" are high quality, simplicity and urgency. We hope our journal will serve the progress in oceanography and related topics and assist the creative cooperation between the scientists all over the world.

PAPERS

Physical Oceanography

DEEP CURRENTS OF THE CENTRAL SEA OF JAPAN
This e-mail address is being protected from spambots. You need JavaScript enabled to view it 1, S.C. Riser2, J.-H. Yoon3
1 Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia
2 School of Oceanography, University of Washington, USA
3 Research Institute for Applied Mechanics (RIAM), Kyushu University, Japan

The features of deep water circulation of the central part of the Sea of Japan at the depth of 800 m are investigated by PALACE floats drift in 1999–2001. Large-scale cyclonic gyre, having transported water from Hokkaido to the Peter the Great Bay was revealed. Stationary cyclonic eddies are found too. One of them located in the eastern part of gyre (which center is in the point with coordinates 42°N, 138°E), is important for the understanding of deep water circulation of the Sea of Japan as a whole.

ON THE RELASHIONSHIP BETWEEN VOLUME TRANSPORT OF THE SUBTROPICAL AND TROPICAL GYRES IN THE NORTHWESTERN PACIFIC OCEAN
A.D. Nelezin
Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

By the observation data, from 1967–1991 on a section of 137°E, it was calculated the water transport by the main currents in a layer of 0–1000 m. The volume transport of the subtropical gyre (formed by the North Equatorial Current and Kuroshio) and that of the tropical gyre (formed by the North Equatorial Current and the Equatorial Counter-Current) were calculated. The trend components were distinguished. The calculated correlation coefficients showed a close relationship between the volume transport of the currents forming the subtropical and tropical gyres in the Western Pacific ocean.

ESTIMATION OF THE INTERANNUAL VARIABILITY OF THE SEA OF JAPAN WATER TEMPERATURE
This e-mail address is being protected from spambots. You need JavaScript enabled to view it , V.V. Plotnikov
Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

This work is based on the most complete records of deep-water oceanographic observations (about 140,000 stations received from 1900 to 2000) that made it possible to study the Sea of Japan thermal fields structure in detail. The key areas responsible for the formation of different spatial scales variability have been singled out and the sea thermal conditions variability from 1954–1991 has been assessed. During this period neither extremely warm nor extremely cold “hydrological” winters were observed in the Sea of Japan. The warm (1954–1956, 1959, 1962, 1965, 1972, 1973, 1979, 1989, 1990) as well as cold (1963, 1968, 1981, 1984–1987) winters have been singled out. The trend line of the first component of the EOF temperature decomposition shows that the thermal state of the active layer in February–March was tending to the slow fall of temperature (approximately -0.6°C for 38 years). The information received does not confirm the previous conclusions of the lowering intensity of the active layer ventilation in the northern and northwestern parts of the Sea of Japan from 1954 to 1991.

ESTIMATION OF CLIMATOLOGICAL SLOPE OF THE SEA Of JAPAN LEVEL AND ITS SEASONAL VARIABILITY
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Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

This study examines multiyear annual and seasonal mean sea level slope in the Sea of Japan. Non directional method for the reduction level hights in the Sea of Japan to common Unified Height System is proposed. The method is based on Zubov’s equation of geostrophic ratio between flow velocity and sea level slope. Available published data on volume transport through La-Perouse (Soya) and Korea (Tsushima) Straits and historical sea level data at the tide-gauge coastal stations in Russia, Japan and Korea were used for estimation. The main feature of general climatological sea level slope in the Sea of Japan is a steady rise of annual mean sea level towards the Japan coast and Sakhalin Island. The sea level slope magnitude is varied from 60–65 cm to 75–85 cm.
The seasonal variations of mean level don't change the main character and magnitude of mean sea level slope. Seasonal variability is spread all over the Sea of Japan, but it is ranged from 10–15 cm in the north to 30–35 cm in the south with general higher background of mean sea level in summer and lower background in winter.

MARINE INTERNAL WAVES OF THE RAYLEIGH TYPE
I.Ya. Tyukov
V.I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences (POI FEBRAS), Russia

The forced seismic gravitational internal waves occurring in the bottom layer under the sea floor deformations are considered. In their turn, the sea floor deformations are induced by the earth’s vibration or pulsations of external pressure (connected with the sea level variations) that are immediately transmitted to the sea floor by the vertical incompressible water column. The problem is based on the linear Euler equation and incompressibility equation with consideration of continuity of the vertical velocity component at the deformed sea floor. The continual deepening of the ocean is in linear dependence on the rate of bottom hydrodynamic pressure rise. The coefficient of proportionality is represented by the dimensionless deformation function N that is calculated in every point of the oceanic crust over experimental data. The absence of vertical or horizontal motion is the kinematic feature of the upper boundaries z = z0, z = z1 of the bottom layer where low-frequency (w = w1) and high-frequency (w = w2) seismic gravitational waves are induced. If , the upper boundaries z = z0 and z = z1 are approaching each other. If N = 1, the upper boundaries are merging into the single surface. Kinematics of internal seismic gravitational waves is analogous to kinematics of the surface seismic Rayleigh-type waves existing in the upper earth layer. When the long seismic gravitational waves with T2 pendulum periods belonging to interval spread, the sea floor deformations are reflected at the sea surface without any changes.

Marine Meteorology

ASSESSMENT OF LARGE-SCALE CONNECTION BETWEEN THE ATMOSPHERE AND ICE COVER IN THE SEA OF OKHOTSK
This e-mail address is being protected from spambots. You need JavaScript enabled to view it , N.I. Savelieva, V.V. Plotnikov
V.I. Il’ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences (POI FEBRAS), Russia

Long-term and seasonal variability of ice cover in the Sea of Okhotsk from the 1929 to 2000 is investigated. The relationship between ice cover and parameters of the Siberian High, Aleutian Low and Hawaii High examined on the base of analyze of cumulative curve of their anomalies. The long-term variability of ice cover in the Sea of Okhotsk reveals two periods with tendency to reduce of ice cover (1929–1957 and 1982–1998) and one period with tendency of increase ice extent (1958–1982). The ice conditions depend on complex relation among three centers of action of the atmosphere (CAA) over the Asian-American sector of the Northern Hemisphere. The mild ice conditions in the Sea of Okhotsk until the early 1980s is accompanied by weakening of Siberian High and heavy ice cover coincides with the greater-than-normal development of the Siberian High. The ice cover and pressure difference between the Siberian High and Aleutian Low shows the same relation. Otherwise, the Aleutian Low itself does not reveal good correlation to the ice cover. During last two decades the relationship between ice cover in the Sea of Okhotsk and these two CAA was changed. The main reason of these changes is connected to the influence of the Hawaiian High ridge on the cyclone trajectory over the Sea of Okhotsk.

Marine Environment

MONITORING OF POTENTIAL ENVIRONMENTAL EFFECTS OF OIL EXPLORATION IN THE SEA OF OKHOTSK AND DISTRIBUTION OF ARTIFICIAL RADIONUCLIDES IN THE SEA OF JAPAN
This e-mail address is being protected from spambots. You need JavaScript enabled to view it 1, T.S. Lishavskaya1, T.A. Belan1, E.V. Karasev1, O. Togawa2
1 Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia
2 Japan Atomic Energy Research Institute (JAERI), Japan

An extensive ecological survey was conducted to investigate possible environmental effects of offshore oil drilling activities in the Sea of Okhotsk in 1998. Marine environmental impact of appraisal well drilling and production platform installation in the NE Sakhalin Island shelf appeared to be present in less than a month in the water column and also limited to the immediate surrounding bottom sediments within 250 m of the center of activity.
As a follow up of the 1994–1995 intergovernmental investigation on the consequences of radioactive waste dumping and accidents in the Sea of Japan proper and its coastal zone, two sampling expeditions were carried out in 1999–2000 period. Activities of gamma emitters, 90Sr and 239,240Pu in seawater and bottom sediments were low and caused by global atmospheric fallout of radionuclides. Data obtained in these expeditions are quite close to the results of previous investigations by different research groups. In Peter the Great Bay, the main sources of radionuclides appeared to be still their global atmospheric fallout and the discharge of freshwater and suspended sediments from river runoff. There is no clear indication of the impact of navy facilities on radioactive contamination of Peter the Great Bay except elevated 60Co activities resulting from 1985 accident in Chazhma Bay. 60Co released during this accident is still present in bottom sediments of Strelok Bay at significant levels (up to 150 Bq/kg). In fishing and recreational areas of Peter the Great Bay (Amurskiy and Ussuriyskiy bays), levels of radionuclide activities in seawater and bottom sediments are low and caused mainly by global atmospheric fallout.

Applied Oceanography

NEW VERSION OF CONTAMINANT TRANSPORT MODEL IN SEA
This e-mail address is being protected from spambots. You need JavaScript enabled to view it , A.A. Bogdanovsky
Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

Application of models that adequately describe transport and sedimentation of contaminants in marine environment is critical for the ecological studies and the impact assessment within the shelf exploration and development projects. VOSTOK model is one of the commonly used models under the Russian Far East conditions. The model was used to assess water and sea-bottom pollution zones in the course of the oil and gas production facilities construction and operation on Sakhalin shelf as well as for hydro-construction activities in coastal zones. This work describe the latest version VOSTOK 8.9 model for calculation of contaminants transport and sedimentation in sea water.
VOSTOK model is a 3D diffusive-advection model developed on the basis of the particle method with the use of random number generator for the simulation of nondeterministic processes. The distinguishing features of a new version are the setting of boundary conditions at water-air and water-bottom borders, description of three turbulence scales, account of flocculation effect and jet sinking effect, and account of contaminant non-conservativity.
Results of only two main verification tests presented in this paper. The first one is the discharge experiment organized by Exxon company in 1998. The second is the comparative simulation on AKS model developed in Computing Centre of the Russian Academy in 2002.

OCEANOGRAPHY OF AREA CLOSE TO THE TUMANNAYA RIVER MOUTH (THE SEA OF JAPAN)
This e-mail address is being protected from spambots. You need JavaScript enabled to view it 1, D.G. Aubrey2, K.L. Feldman3
1 Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia
2 Woods Hole Group, USA
3 Institute of Marine Biology, Far Eastern Branch of Russian Academy of Sciences (IMB FEBRAS), Russia

Tumannaya river mouth is frontier area between PRC, North Korea and Russia. Marine area close to it is investigated on the base of unic field measurements. Northwest thermal front from this area to the Yamato Rise was found. To the south of it southeastward current was traced by salinity distribution and surface floats drift.

INFORMATION

DEVELOPMENT OF THE SUB-REGIONAL SEGMENT OF THE UNIFIED SYSTEM OF INFORMATION ON THE WORLD OCEAN CONDITIONS OF RUSSIA IN POI FEBRAS
This e-mail address is being protected from spambots. You need JavaScript enabled to view it , V.I. Rostov, E.V. Dmitrieva, N.I. Rudykh
V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences (POI FEBRAS), Russia

SEDIMENT AND BIOGENIC MATTER ACCUMULATION IN THE SEA OF OKHOTSK
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Korea Ocean Research and Development Institute (KORDI), Republic of Korea

ARGO News

ARGO PROJECT IN RUSSIA (part 1)
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Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

FERHRI Studies

MODELING OF POTENTIAL OIL SPILL FATE BETWEEN HOKKAIDO AND SAKHALIN ISLANDS
This e-mail address is being protected from spambots. You need JavaScript enabled to view it 1, I.E. Kochergin1, I.A. Arshinov1, V.D. Budaeva1, V.G. Makarov2, V.F. Mishukov3, S.I. Rybalko1, V.P. Tunegolovets1
1 Far Eastern Regional Hydrometeorological Research Institute, Vladivostok, Russia.
2 National Politechnic Institute, La Paz, Mexico
3 V.I. Il'ichev Pacific Oceanological Institute, Far Eastern Branch of Russian Academy of Sciences (POI FEBRAS), Russia

THE CURRENTS MODELING FOR PETER THE GREAT BAY ON THE BASE OF FERHRI SURVEY, 2001
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Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia

History

THE FORGOTTEN NAMES
This e-mail address is being protected from spambots. You need JavaScript enabled to view it 1, A.A. Bobkov2
1 Far Eastern Regional Hydrometeorological Research Institute (FERHRI), Russia
2 Saint-Petersburg State University (SPSU), Russia