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Turning mechanism problems of the Changjiang River diluted water

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Acta Oceanologica sinica 1992年第3期11卷 317-329页

作者： Zhao Baoren institute of oceanology, academia sinica, qingdao 266071, china

Some main ideas about the turning of the Changjiang River diluted water (CDW) and their deficiencies are reviewed in this paper. According to a large number of observation data it is pointed out that the turning phenomena of the CDW are related not only to the discharge of the Changjiang River but also to the sea surface slope and wind stress curl in the southeast coast of china. Exsistence of the sea surface slope reflects essentially the effect of the Taiwan Warm Currc (TWC) on the turning of the CDW.

关键词： In area Wang Turning mechanism problems of the Changjiang River diluted water

Study on short-range numerical forecasting of ocean current in the East china Sea——Ⅰ Basic problems of ocean current forecasting and structure of the models

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Acta Oceanologica sinica 1993年第3期12卷 335-345页

作者： Zhao Jinping, Chen Zhongyong and Shi Maochong institute of oceanology, academia sinica, qingdao 266071, china Ocean University of qingdao, qingdao 266003, china

Ocean current forecasting is still in explorative stage of study. In the study, we face some problems that have not been met before. The solving of these problems has become fundamental premise for realizing the ocean current forecasting. In the present paper are discussed in depth the physical essence for such basic problems as the predictability of ocean current, the predictable currents, the dynamical basis for studying respectively the tidal current and circulation, the necessity of boundary model, the models on regions with different scales and their link. The foundations and plans to solve the problems are demonstrated. Finally a set of operational numerical forecasting system for ocean current is proposed.

关键词： Current forecasting ocean circulation operational numerical forecasting numerical model the East china Sea

Estimation of water volume transports through the main straits of the East china Sea

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Acta Oceanologica sinica 1991年第1期10卷 1-13页

作者： Zhao Baoren and Fang Guohong institute of oceanology, academia sinica, qingdao, 266071, china

The structure of current speed and the variability of volume transports of the Kuroshio in the Tokara-kaikyo and Osumi-kaikyo are discussed on the basis of data of KER in the period from 1977 to 1984. The average geostrophic transport through these two straits is estimated to be 24. 5×106 m3/s and only 1/12 of the transport is through the Osumi-kaiky5. Countercurrents on both sides of the Kuroshio trunk are observed in the Tokara-kaikyo. Calculation indicates that the average geostrophic current speed is less than the GEK current speed, systematically. On the basis of the current measurements, the northward transports through the Taiwan Strait in winter and summer are estimated to be 1. 05×106and 3. 16×106m3/s, respectively. From Chu's data (1976) the average transport of the Kuroshio flowing into the East china Sea passing through the passage east of Taiwan is about 29. 3×106m3/s. From Miita and Ogawa's data (1984) the average transport through the Tsushima-kaikyo is 3. 6×106m3/s. Thus the volume transports through the above four straits are roughly in balance, the total outflowing transport is slightly larger than the total inflowing transport. The possible reasons resulting in the difference of transports are also discussed.

关键词： Estimation of water volume transports through the main straits of the East china Sea GEK

A combined numerical tidal model for the Hangzhou Bay and Qiantang River

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Acta Oceanologica sinica 1989年第4期8卷 485-496页

作者： Cao Deming and Fang Guohong institute of oceanology, academia sinica, qingdao, china Inst oceanology Academia Sinica Qingdao China China

-In order to avoid prescribing open boundary condition on the upstream side of the Hangzhou Bay, in numerical simulation of the tides and residual currents of the Bay, a 1-D model for the Qiantang River is connected to the 2-D model for the Hangzhou Bay. The harmonic constants of diurnal constituent [ (K1+O1)/2],semidiurnal constituent (M2) and shallow water constituent (M4) are obtained. The results produced by the combined model are in better agreement with the observed ones than those produced solely by the original 2-D model. The combined model gives much more reliable results for tide-induced residual water level and current.

关键词： A combined numerical tidal model for the Hangzhou Bay and Qiantang River Bay

INFLUENCES OF WIND ON VERTICAL STRUCTURES OF TEMPERATURE AND SALINITY, AND UPWELLING OFF ZHEJIANG COAST IN SUMMER

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Journal of oceanology and Limnology 1985年第1期3卷 109-117页

作者： ding Zongxin (institute of oceanology, academia sinica, qingdao) institute of oceanology Academia Sinica Qingdao

In this paper the influences of short-term wind on vertical structures of temperature and salinity, and the upwelling off the Zhejiang coast are studied on the basis of hydrographic data and wind near the coast in Summer (1959-1979). It is pointed out that the variations of vertical distributions of temperature and salinity, and upwelling in this region are closely related to short-term (several days to a week) variation of wind observed. The occurrence of double thermocline, a special oceanographic phenomenon, is partially related to unstable SSW wind field. SSW and NE winds in June are two (dynamic factors making intermediate warm water form or disappear.

关键词： INFLUENCES OF WIND ON VERTICAL STRUCTURES OF TEMPERATURE AND SALINITY AND UPWELLING OFF ZHEJIANG COAST IN SUMMER

The reliability of the wind speed, air temperature and humidity observed on ship

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Acta Oceanologica sinica 1988年第3期7卷 381-387页

作者： Liu Lianji and Zhao Yongping Shandong College of oceanology, qingdao, china institute of oceanology, academia sinica, qingdao, china Shandong College of oceanology Qingdao China China

Using data of wind speed, air temperature and humidity recorded simultaneously on board and the on the small buoy, the latter is considered as criterion, the paper has discussed the influence of the body of ship on the meteorological data. Owing to the disturbance and the influence of heat radiation from the body of ship, the temperature observed on board is higher by about 2癈 than on buoy, and the relative humidity lower by 10%, wind speed observed on the mast is not only irregular but is less than that on the buoy, the error of which would be 3 m/s. The paper therefore suggests that the data observed on the deck in daytime, especially in fair weather after midday, is less reliable. The reliability of data decreases simultaneously with the increase of the body of ship in *** addition, this paper also proposes that more reasonable observing points chosen on board should be the key to obtain reliable data. By analysis, it is believed that the meteorological data observed on ship’s bow or upwind outs

关键词： air temperature and humidity observed on ship The reliability of the wind speed

MAJOR FEATURES OF WARM AND COLD EDDIES SOUTH OF THE NANSEI ISLANDS

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Chinese Journal of oceanology and Limnology 1983年第3期1卷 248-257页

作者： Guan Bingxian (institute of oceanology, academia sinica, qingdao) institute of oceanology Academia Sinica Qingdao

As regards the eddies occurring in the origination region of the Kuroshio (west of 130° E), the earliest informations were reported by R. Shigematsu (1932) and K. Koenuma (1936) respectively. From the data observed in the twenties, they pointed out that there was a warm eddy located to the right side of the Kuroshio in the Luzon Strait. Using the data obtained from the fourties through the sixties, Nitani further convinced the existence of the warm eddy. During the latest two decades, observations of the area south of the Nansei Islands on board of R/V Chofu Maru (1965, ’66, ’67) and Hakuho Maru (1974, ’75) also revealed the existence of warm and cold eddies, but few works on 'eddies' are reported, so far as we know.

关键词： MAJOR FEATURES OF WARM AND COLD EDDIES SOUTH OF THE NANSEI ISLANDS

STUDIES ON. PHYSICAL SCIENCES. OF THE OCEANS AND SEAS IN china, 1979-1982

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Chinese Journal of oceanology and Limnology 1984年第2期2卷 243-268页

作者： Mao Hanli (institute of oceanology, academia sinica, qingdao) institute of oceanology Academia Sinica Qingdao

In 1979—1982, considerable research works on physical sciences of the oceans were done by Chinese scientists and some fruitful results were achieved. In the following, a brief account is given of the achievements in the studies of currents and circulation, hydrographic characteristics and watermasses, tides and sea level, surface waves, storm surges, air-sea interaction, numerical modelling, estuarine and coastal research, marine chemistry, marine acoustics and marine optics.

关键词： OF THE OCEANS AND SEAS IN china PHYSICAL SCIENCES STUDIES ON

UPWELLING AND SEDIMENTATION DYNAMICS I. THE ROLE OF UPWELLING IN SEDIMENTATION IN THE HUANGHAI SEA AND EAST china SEA-A DESCRIPTION OF GENERAL FEATURES

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Chinese Journal of oceanology and Limnology 1984年第1期2卷 12-19页

作者： Hu Dunxin (institute of oceanology, academia sinica, qingdao) institute of oceanology Academia Sinica Qingdao China

It is found that the mud distributions in the Huanghai Sea and East china Sea are extremely identical with the upwelling’s in terms of locality and extent. The process of the mud formation is examined. It is concluded that vertical circulation i.e. upwelling plays a determinant role in the: process and furthermore, it is inferred that wherever upwelling occurs on continental shelf, mud should be formed and, conversely, wherever downwelling takes place, mud should not exist, for which coarse: sediment should substitute.

关键词： THE ROLE OF UPWELLING IN SEDIMENTATION IN THE HUANGHAI SEA AND EAST china SEA-A DESCRIPTION OF GENERAL FEATURES UPWELLING AND SEDIMENTATION DYNAMICS I 口口 EAST SEA