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Three-dimensional numerical prediction of vertical temperature structure of the Huanghai and the Bohai Seas

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Acta Oceanologica Sinica 1993年第4期12卷 511-520页

作者： Jin Meibing, Wang Zongshan and Xu Bochang first institute of oceanography, state oceanic administration, qingdao 266003, china first institute of oceanography State Oceanic Administration Qingdao 266003 China China

In the paper, the sea is divided into two layers with density jumping, assuming that the physical parameters in each layer are independent of depth. Two-layer flow field with tide and wind currents is calculated with extended ADI method, after the calculation for flow field is stable , coupled with temperature diffusion equations and thermohaline depth prediction equation, a four-day time prediction of the surface, bottom temperature and thermohaline depth of the Huanghai and the Bohai Seas. At the same time, three dimensional temperature field of sea water is predicted through vertical temperature distribution function. The result indicates that the prediction quality of the whole model and the fitting degree between the predicted result and the measured values are satisfactory.

关键词： Bohai currents satisfactory fitting mixing mostly shore Upper ocean tidal

Morphology,phylogenetic position,and ecophysiology of Alexandrium ostenfeldii(Dinophyceae) from the Bohai Sea,china

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Journal of Systematics and Evolution 2011年第6期49卷 606-616页

作者： Haifeng GU(Third institute of oceanography,state oceanic administration,Xiamen 361005,china) (Third institute of oceanography State Oceanic Administration Xiamen 361005 China)

Alexandrium ostenfeldii is a potentially toxic dinoflagellate that often occurs in coastal areas at high *** we report the presence of *** in the Bohai Sea,china,for the first *** vegetative cells of *** are characterized by a narrow first apical plate and a large ventral pore located on the anterior right *** large subunit sequence comparison revealed that the Chinese strain differs from the Finnish strains at only three positions,and from *** of Spain at five *** parsimony analysis revealed that *** from china and Finland and *** from Spain grouped *** were the nearest sister group to a clade with *** from New Zealand,Europe,and North *** culture,growth did not occur at temperatures below 9℃ and occurred at salinities between 7 and 27 *** took 10-20 days for newly formed cysts to mature at 20℃.Lower temperature delayed germination,but the germination rate exceeded 90% at temperatures from 12 to 24℃.No germination occurred below 9℃ after 1 month of *** Chinese strain of *** produced neither spirolides nor paralytic shellfish poisoning toxins.

关键词： Alexandrium ostenfeldii Bohai Sea china cyst growth toxicity.

Chemical characteristics of clay minerals in the sediments from the Yellow River and the Changjiang River

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Chinese Science Bulletin 1997年第6期42卷 488-492页

作者： HE Liangbiao and LIU Qingyu1.first institute of oceanography, state oceanic administration, qingdao 266003, china 2. institute of Physical oceanography Ocean University of qingdao, Qingdac 266003, china first institute of oceanography State Oceanic Administration Qingdao China institute of Physical oceanography Ocean University of Qingdao Qingdao China

THE characteristics of clay minerals are controlled by the characters of weathered mother rock and the weathering environments in source area. The characteristics of clay minerals of the Yellow River should be different from those of the Changjiang River because the characters of mother rock and the weathering environments in the drainage area of the Yellow River are quite different from those in the drainage area of the Changjiang River, so it is important to find a difference between the characteristics of clay minerals of the Yellow River and

关键词： the Yellow River the Changjiang River clay minerals chemical characteristics.

A three-dimentional model of the northeast East china Sea, with application to the M2 current field

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Acta Oceanologica Sinica 1990年第4期9卷 487-498页

作者： Tang Yuxiang first institute of oceanography, state oceanic administration, qingdao, china

A simple three-dimensional tidal model is used to examine the M2 tidal current distribution in a northeastern part of the East china Sea, especially the vertical variation of the current in the region. Computed M2 current is compared with observations available and found to be in good *** features of the calculating method in this study are: (1) Vertical variation of the tidal current is taken as a funetion of the depth-mean velocity: (2) the method is applicable to a variety of the vertical eddy viscosities; (3) it has a fine vertical resolution, especially near the sea bootom. So, this method not only enables us to get a steady state solution easily but also depicts effects of the friction on the vertical variation of the current much better.

关键词： with application to the M2 current field A three-dimentional model of the northeast East china Sea

Study on dynamics of shear waves - Ⅱ Triggering mechanism and amplitude decay

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Acta Oceanologica Sinica 1989年第2期8卷 171-178页

作者： YuanYeli Zheng Quan’an first institute of oceanography, state oceanic administration, qingdao, china

Starting from vorticity equation, the triggering mechanism and amplitude decay of shear waves in the ocean are discussed in this paper. The theoretical analysis indicates that by the action of stripped external force (for examples, the sudden setting of stripped wind, moving stripped wind, etc. ), shear waves can be triggered. This is qualitatively consistent with satellite observations. The amplitude decay process of shear waves by the action of side friction is also discussed in the paper. The theoretical model is quantitatively consistent with satellite observations.

关键词： exp Pro Triggering mechanism and amplitude decay Study on dynamics of shear waves

Distribution　of　biomass　of　zooplankton　in　the　Kuroshio　area　of　the　East　china　Sea

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Acta Oceanologica Sinica 1996年第3期15卷 365-376页

作者： Meng Fan Chen Shiqun and Wu Baoling (first institute Of oceanography, state oceanic administration, qingdao 266003, china) first institute of oceanography State Oceanic Administration Qingdao 266003 China

This paper makes an analysis and study of the plankton samples collected from the Kuroshio and its adjacent areas in the north of the East china Sea during the seven successive years (from 1986 to 1992) in the implementation of the programme 'china-Japan Joint Research on the Kuroshio' as well as a brief summary of the distribution of the biomass of food zooplankton and its relation to the oceanic environment. The results indicate that the biomass of zooplankton in the study area is relatively low, with in annual mean of 71. 22 mg/m3 only. The seasonal variation of biomass is not obvious and salinity is an important factor influencing seasonal and annual variations of zooplankton biomass in the study area. The Kuroshio front in the East china Sea and the Tsushima Warm Current front divide the study area into two parts from north to south in the vicinity of the 200 m isobath: the biomass in the western part was greater than 50 mg/m3,whereas was less than 50 mg/m3 in the eastern part. The spatiotemporal distributions of different ecological groups of zpplankton and their biomass basically reflect the basic features of the hydrolagical conditions in each season in the study area.

关键词： Zooplankton biomass Kuroshio area

The continental shelf wave of the East china Sea and its effect on the Kuroshio

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Acta Oceanologica Sinica 1992年第3期11卷 367-374页

作者： Kong Xiangde, Yin Xunf u and Li Fanhua first institute of oceanography, state oceanic administration, qingdao 266003, china

The free shelf wave theory is applied to the practical case of the continental shelf in the East china Sea to analyse the effects of the shelf wave on the Kuroshio. The results indicate that the shelf wave in lower frequency travels from north to south and its phase velocity is proportional to the Kuroshio's current velocity) the maximum current velocity of the Kuroshio lies at the continental margin. The analytical solutions obtained indicate that the hydrodynamic characters of the sea region over the shelf present band structure. The horizontal motion ( x -component) caused by the shelf wave at the margin may be one of the causes for generating wavy pattern of the Kuroshio's axis .

关键词： The continental shelf wave of the East china Sea and its effect on the Kuroshio wave

The geological significance of fossils in the coastal loess in the Bohai Straits and Liaodong Peninsula

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Acta Oceanologica Sinica 1997年第1期16卷 71-83页

作者： Cheng Zhenbo, Fu Mingzuo and Ju Xiaohua first institute of oceanography, state oceanic administration, qingdao 266003, china first institute of oceanography State Oceanic Administration Qingdao 266003 China

Based on the analysis of the characteristics of the fossils (mollusks, Radiolaria, planktonic and benthic Foraminifera and Ostracoda) found in the four loess profiles located respectively at Heishigou and Beizhuang Villages on Daheishan Island in the Miaodao Islands in the Bohai Straits, and Daweijia and Yujiawaizi Villages in Jinzhou County, Liaodong Peninsula, the distribution and abundance variation of the fossils in vertical profiles are studied, the source of coastal loess is probed and the relationship between loess deposition and paleoclimatic environment as well as sea-level changes is discussed.

关键词： Coastal loess material source fossil organisms paleoclimate

Structural control of the Gagua “Wedge” Zone east of Taiwan Island on the southern Okinawa Trough

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Science china Earth Sciences 2005年第8期48卷 1165-1174页

作者： ZHENG Yanpeng1,2,3, LIU Baohua2,3, WU Jinlong2, LIANG Ruicai2,3, LIU Chenguang2,3 & ZHANG Zhengmin1 1. Marine Geology College, Ocean University of china, qingdao 266003, china 2. first institute of oceanography, state oceanic administration, qingdao 266061, china 3. Key Laboratory of Marine Sedimentology and Environmental Geology, state oceanic administration, qingdao 266061, china Marine Geology College Ocean University of China Qingdao China first institute of oceanography State Oceanic Administration Qingdao China Key Laboratory of Marine Sedimentology and Environmental Geology State Oceanic Administration Qingdao China

Based on compositive analysis and interpretation of the observed and historical data, the geophysical field characters and structural properties of the Gagua “Wedge” Zone of the sea area east of Taiwan Island and the primary tectonic stress direction and its variabilities of backarc spreading in the southern Okinawa Trough are studied. It is concluded from the study results that the Gagua “Wedge” Zone is structurally consistent with the Gagua ridge and two fault basins on both sides of the Gagua ridge, and adjusts the moving direction and distance of the western Philippine Sea plate to make the northwestward motion of the plate on its east side change to the northward subduction of the plate on its west side so that the primary tectonic stress direction of the Okinawa Trough changed from NW-SE to nearly N-S, which provided the stress source for the Okinawa Trough to enter the second spreading stage.

关键词： east of Taiwan Island, Gagua "Wedge" Zone, Okinawa Trough, structural control.