Apr. 2025

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1987 Vol. 6, No. 4

Physical Oceanography,Marine Meteorology and Marine Physics
THE VERTICAL CHARACTERISTICS OF INTERNAL WAVES IN SHALLOW REGION OF THE EAST CHINA SEA ANALYSED FROM CTD DATA
FANG XINHUA, YOU YUZHU
1987, (4): 493-502.
Abstract:
The vertical characters of temperature, salinity and density fluctuations in shallow region of the East China Sea are analysed by using 12 CTD short records with 1-hour intervals. The average S,t and p profiles can be divided into three distinctive l...
ON THE JOINT DISTRIBUTION OF THE PERIODS AND HEIGHTS OF SEA WAVES
SUN FU
1987, (4): 503-509.
Abstract:
Based on the ray theory of waves and the linear model of sea waves, a joint distribution of periods and heights is derived. The theoretical expression has the same merits as those of Lon-guet-Higgins', but the wave height distribution is still Raylei...
ROTARY SPECTRAL ESTIMATION AND ITS APPLIED EXAMPLES FOR OCEAN CURRENT VECTOR TIME SERIES
MA JIRUI
1987, (4): 510-518.
Abstract:
The mathematical background of the rotary spectral estimation of the ocean current vector and the related rotary variates are described briefly in this paper, some achievements in the confidence intervals of the rotary spectral estimator of the vecto...
A NUMERICAL STUDY OF THE TIDE AND TIDAL CURRENT IN BEIBU GULF
LI SHUHUA, CHEN BO
1987, (4): 519-530.
Abstract:
The systems of diurnal tidal wave (K1) and semi-diurnal tidal wave (M2) in the Beibu Gulf are studied with numerical method. Also discussed in this paper are the influences of the Qiongzhou Strait, the bottom friction term, the horizontal turbulent f...
Marine Meteorology
CROSS-EQUATORIAL CURRENTS AND THE GENESIS OF TYPHOON
XIAO WENJUN
1987, (4): 531-536.
Abstract:
The daily weather maps of the 850 hPa level and the monthly mean wind maps of tropical regions published by ECMWF are utilized to study the cross-eguatorial currents. It is found out that there are 3 branches of the cross-equatorial current in the ar...
THE COMPUTATION OF OPTIMUM OCEAN SHIP ROUTING
HAN ZHONGNAN
1987, (4): 537-546.
Abstract:
A computational method for the ocean ship routing based on optimization theory is presented in this paper. In the computational programme "breaking circle method" is used, by which a principal contradictory line can be obtained in the operations rese...
THE FITTING FOR WEIBULL AND ANNUAL EXTREME WIND SPEED EMPIRICAL DISTRIBUTIONS AND A NUMERICAL SOLUTION FOR ESTIMATING ITS PARAMETERS
CHEN SHANGJI, YU JIYE
1987, (4): 547-557.
Abstract:
Having answered the question why the empirical frequency curve of annual extreme wind speeds at Tanggu, Tianjin of China does not fit the Pearson-Ⅲ type, the authors obtained a better fitting for the Weibull distribution through extremum analysis, an...
Marine Chemistry
THE BACKGROUND VALUE OF CHEMICAL ELEMENTS IN THE HUANGHAI SEA SEDIMENT
LU SAIYING, ZHU MINGYUAN
1987, (4): 558-567.
Abstract:
The distribution of some chemical elements in the Huanghai Sea sediment is statistically revealed on the basis of the new geochemical fundamental law presented respectively by Ahrens and Vistelius. The distribution characteristics of 8 elements (i.e....
FLOCCULATION OF DISSOLVED Fe, Al, Mn, Si, Cu, Pb AND Zn DURING ESTUARINE MIXING
LIN ZHIQING, ZHENG JIANLU, CHEN JINSI, HUANG RENQUAN
1987, (4): 568-576.
Abstract:
This is the first study of the flocculation of dissolved Fe, Al, Mn, Si, Cu, Pb and Zn during mixing in Zhujiang Estuary, based on the experiment on a series of solutions of salinities ranging from 0 to 24 by mixing the Zhujiang water near Zhongshan ...
Marine Geology and Geomorphology
CHARACTERISTICS OF MAGNETIC LINEATIONS AND TECTONIC EVOLUTION OF THE SOUTH CHINA SEA BASIN
LÜ WENZHENG, KE CHANGZHI, WU SHENGDI, LIU JlANHUA, LIN CHANGSONG
1987, (4): 577-588.
Abstract:
Based on the analysis of new data of a total of 60 000 km, the authors propose a new spreading model of the tectonic evolution of the South China Sea Basin and suggest that magnetic anomalies in the Basin are the magnetic anomalies of a new type in m...
SOURCES OF INNER-SHELF SEDIMENT IN THE NORTHERN SOUTH CHINA SEA AND THE CONTROLLING FACTORS
CHEN JUNREN, ZHENG XIANGMIN
1987, (4): 589-598.
Abstract:
The sediments on the inner shelf of the northern South China Sea, mainly composed of terrigenous fragments, are continually transported herein by streams and floods. The coastal and strait-bottom erosion by waves and currents also contribute to the s...
Marine Biology and Fishery
SPECIES COMPOSITION AND SUCCESSION OF PHYTOPLANKTON IN THE INDIAN RIVER LAGOON, FLORIDA (FROM JAN TO AUG 1985)
LU DOUDING
1987, (4): 599-612.
Abstract:
Phytoplankton samples were collected bi-weekly by towing a 20 μm mesh net in the Indian River Lagoon from January to August, 1985. Two-way ANOVA and T-method was used in analyzing data. Identified were 145 species of phytoplankton including 89 specie...
ENCLOSURE EXPERIMENT FOR BOHAI CRUDE OIL EFFECTS ON THE STRUCTURE OF PHYTOPLANKTON COMMUNITY
SHEN LIANGFU, HUANG WENXIANG, ZHU LIN
1987, (4): 613-621.
Abstract:
Three experimental ecosystem enclosures were employed to test the effects of Bohai crude oil on the structure of phytoplankton community. The results indicate that, while the species composition were changed (from larger diatoms to microflagellates o...
Oral Appendage Structure and Feeding Habit of Spanish Mackerel in Qingdao Coastal Waters in Spring Fishing Season
WU WENKUI
1987, (4): 643-647.
Abstract:
Articles
AN ANALYSIS OF ACOUSTICAL SCATTERING FROM ELASTIC OBSTACLES BY FINITE AND BOUNDARY ELEMENT COMBINATION APPROACH
BAO XIAOQI, XU QICHANG, WANG TECHAO
1987, (4): 622-629.
Abstract:
A method combining boundary and finite element approaches as well as modal analysis to solve the acoustical scattering from elastic obstacle in infinite fluid is described. An elastic cylinder with finite length immersed in water is chosen as an exam...
Response of Temperature Field in the Western Tropical Pacific to El Nino Events
PU SHUZHEN, XU HONGDA
1987, (4): 642-642.
Abstract:
Marine Engineering
VORTEX SHEDDING FROM A CIRCULAR CYLINDER IN OSCILLATORY FAR FLOW
WANG XUEGENG, Qiu DAHONG
1987, (4): 630-641.
Abstract:
By using a process of successive approximations, the Boundary-Layer equations are solved to determine the separation points of a circular cylinder in oscillatory flow under the conditions of vortex existing. Combining with the discrete vortex model, ...