Sự thay đổi lưu thông nước trong vùng biển đông của việt nam dưới tác động của quá trình tmostpheric

HQi thao khoa hpc - Hop tac Qudc tg trong digu tra, nghign ctiu tai nguygn vi mfli tni6ng bign

VARIABILITY OF THE WATER CIRCULATION

IN THE EAST VIETNAM SEA UNDER INFLUENCE ATMOSTPHERIC

PROCESSES IN WINTER

Galina A. Vlasova'.

Bui Hong Long \ Nguyen Ba Xuan \ Le Dinh Mau^

/- V.I.Il'ichev Pacific Oceanological Institute, Far Eastern Branch, Russian

Academy of Sciences, 43 Baltiyaskya Street, Vladivostok, 690041, Russia, E-mail:

gavlasova@mail. ru;

2 - Institute of Oceanography, Cau Da 01, Vinh Nguyen,

Nha Trang, Vietnam,

E-mail: [email protected]; [email protected]; [email protected]

1. Introduction

East Vietnam Sea is one of the largest marginal seas of the World Ocean; it

makes part of the Pacific Ocean basin. Its waters wash the coasts of twelve densely

populated states of the South East Asia, including the Peoples' Republic of China,

Malaysia, Thailand, Cambodia, Philippines, Vietnam, which economic activity is

closely related to the natural resources development in the water area of the sea.

Practical relevance of research in the East Vietnam Sea has considerably

increased last decades in relation to the active development of biological, mineral,

and energy resources of the sea. East Vietnam Sea is crossed by important sea

routes connecting the Pacific Ocean and Indian Ocean. The water area of the East

Vietnam Sea yields the great bulk of the seafood harvested by the nearby countries.

Particularly, resources of a shelf zone of the East Vietnam Sea are rapidlly

exploited. For about twenty years it has been conducted industrial oil recovery on a

southern shelf, in the central and northern shelves it is being carried out intensive

geophysical survey of oil and gas.

Besides, hydrometeorological conditions in the considered water area are

extremely complicated and influence the climate of not only nearby countries, but

also all counfries of the Asian-Pacific Region.

In this view, necessity of studying hydrometeorological conditions of the East

Vietnam Sea becomes actual and topical for scientists of tae entire world.

The purpose of the given paper is study of variability of the water circulation in

the East Vietnam Sea under influence regional atmospheric processes in winter.

2. Method

The given quasi-stationary baroclinic model based on solving complete non￾linear equations of the ocean hydrotherraodynamics and turbulent diffusion of the

conservatives admixtures, is related to a class of modem multi-layer models [3]. It

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