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Progress in Natural Science:Materials International 2009年第10期19卷 1413-1418页

作者： Meiqin Suna,b,Dongzhao Lana,b,Zhimin Cao a a Institute of ocean Geoscience,ocean university of {3.,qingdao 266100,{3. b Third Institute of oceanography,State oceanic Administration,Xiamen 3.1005,{3. Institute of ocean Geoscience Ocean University of China Qingdao 266100 China Third Institute of oceanography State Oceanic Administration Xiamen 361005 China

A quantitative study was undertaken on diatoms from cores(SA08-3.) obtained from the southwestern continental slope of the South china Sea(SCS).A total of 165 diatom species belonging to 45 genera were *** constructed a stratigraphic subdivision and correlation according to the characteristics of diatom assemblages together with 14C dating and carbonate *** also discuss the sedimentary environment in the sea area since the last glacial *** research shows that the diatom assemblages coincide with inter-glacial and glacial times,and changes in diatom abundance reflect the instability of the climate in the southern part of the SCS,such that shortterm,temperature descending events correlate with the interglacial *** abundance of diatoms is relevant to interglacial and glacial times,since high abundance values were associated with an interglacial interval,and low abundance values with the last glacial *** assume that strong upwelling developed in the interglacial interval,the development of which was influenced by variations of monsoons in the East Asian region.

关键词： Diatoms Last glacial times Sedimentary environment South china Sea

THE SIMULATION OF THE SAR IMAGE OF INTERNAL SOLITARY WAVES IN ALBORAN SEA

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Journal of Hydrodynamics 2001年第3期13卷 88-92页

作者： Meng Jun min ocean university of qingdao,{3. Zhang Zi li, Zhao Jun sheng First Institute of oceanography, State oceanic Administration, qingdao 266061, china Zhang Jie Key Laboratory of Marine Science and Numerical Modelling, ocean Univ. of qingdao Qingdao 266003 China

SAR imaging mechanism of internal wave is studied. The numerical modelling of internal waves is obtained by the two level scheme. The simulaed SAR images that have better expressed the features of internal waves are ... 详细信息

关键词： internal wave soliton SAR simulation

A dipole mode at thermocline layer in the tropical Indian ocean

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Acta oceanologica Sinica 2003年第1期22卷 15-24页

作者：田纪伟刘慧卿钱维宏 Physical oceanography Laboratory Ocean University of China (Ocean University of Qingdao)Qingdao 266003China Department of Atmospheric Sciences Peking UniversityBeijing 100871China

Temperature data at different layers of the past 45 years were studied and we found adiploe mode in the thermocline layer (DMT): anomalously cold sea temperature off the coast of Sumatra and warm sea temperature in the western Indian ocean. First, we analyzed the temperature and the temperature anomaly (TA) along the equatorial Indian ocean in different layers. This shows that stronger cold and warm TA signals appeared at subsurface than at the surface in the tropical Indian O-cean. This result shows that there may be a strong dipole mode pattern in the subsurface tropical Indian ocean. Secondly we used Empirical Orthogonal Functions (EOF) to analyze the TA at thermocline layer. The first EOF pattern was a dipole mode pattern. Finally we analyzed the correlations between DMT and surface tropical dipole mode (SDM), DMT and Nino 3.SSTA, etc. and these correlations are strong.

关键词： Temperature anomaly dipole mode in thermocline layer tropical Indian ocean empirical orthogonal function

Observing seasonal variations of sea surface wind speed and significant wave height using TOPEX altimetry

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Chinese Science Bulletin 2000年第14期45卷 1323-1328,1345-1346页

作者： CHEN Ge & LIN Hui1. Laboratory of Remote Sensing Information Science, Institute of Remote Sensing Applications, Chinese Academy of Sciences, Beijing 100101, china 2. ocean Remote Sensing Institute, ocean {3. of qingdao, qingdao 2.6003. china 3. CAS/CUHK Joint Laboratory for Geo-Information Science and Department of Geography, the Chinese {3. of Hong Kong, Shatin, New Territories, Hong Kong, chinaCorrespondence should be addressed to Chen Ge Laboratory of Remote Sensing Information Science Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing China ocean Remote Sensing Institute Ocean University of Qingdao Qingdao China CAS/CUHK Joint Laboratory for Geo-Information Science and Department of Geography The Chinese University of Hong Kong Shatin New Territories Hong Kong China

One year of ocean topography experiment (TOPEX) altimeter data are used to study the seasonal variations of global sea surface wind speed and significant wave height. The major wind and wave zones of the world oceans are precisely identified, their seasonal variability and characteristics are quantitatively analyzed, and the diversity of global wind speed seasonality and the variability of significant wave height in response to sea surface wind speed are also revealed.

关键词： satellite altimeter sea surface wind speed significant wave height seasonal variation.

On the torsion in K_2 of a field

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Science china Mathematics 2008年第7期51卷 1187-1195页

作者： XU KeJian & LIU Min College of Mathematics,qingdao university,qingdao 266071,{3. College of Mathematics Qingdao University Qingdao China

For a field F,let Gn(F) = {{a,Φn(a)} ∈ K2(F) | a,Φn(a) ∈ F*},where Φn(x) is the n-th cyclotomic *** first,by using Faltings' theorem on Mordell conjecture it is proved that if F is a number field and if n = 4,8,12 is a positive integer having a square factor then Gn(F) is not a subgroup of K2(F),and then by using the results of Manin,Grauert,Samuel and Li on Mordell conjecture theorem for function fields,a similar result is established for function fields over an algebraically closed field.

关键词： number field function field torsion Milnor K2-group Mordell conjecture

Hilbert transform and its application to modulation of capillary gravity waves

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Acta oceanologica Sinica 2001年第3期20卷 309-315页

作者： Yin Zhongbin, Lu Jun, Tian Jiwei 1. Physical oceanography Laboratory, ocean university of {3., qingdao 2.6003. china 2. TianJin Polytechnic university, TianJin. china Physical oceanography Laboratory Ocean University of Qingdao Qingdao 266003 China Tianjin Polytechnic university Tianjin China

In this paper, the following important problem is answered: Under what condition can the Hilbert transform be put in the simple form. Then, using the Hilbert technique, it is demonstrated that, with some relative weak restrictions, the particle motion at the sea surface and energy transmission may be obtained from a wave record. The analysis show that for the two-dimensional and narrow-band mo- tion (or a physical phenomena, such as capillary waves breaking, which satisfy the narrow-band approx- imation) the local kinetic energy fluctuates in time as the envelope equared multiplied by a constant factor and can be obtained directly from a wave record. It is pointed that the local fluctuatiom of the potential energy as well as the local fluctuations of the total energy can be separated into a slowly varying part and a more rapid oscillating Part. Both Parts can be evaluated by meaas of the Hilbert transform. Finally, a physical interpretation of the envelope of the two-dimensional capillary waves as well as the method for wave group analysis is presented.

关键词： Hilbert tranform capillary gravity waves

A numerical forecasting model of offshore-SST anomaly

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Acta oceanologica Sinica 2000年第1期19卷 25-34页

作者： Wang Sizhen Li Xuhua Qi Jianhua and Su Yusong (1. ocean university of qingdao,{3..) ocean university of qingdao Qingdao 266003 China

An SST model which is good at predicting offshore-SST anomaly (O-SSTA) has been developed. It is composed of three parts: equations of dynamics, equations of model's physics and equations of affecting factors of O-SSTA. Initial field of SST is prepared for a case of O-SSTA on last decade of July 1994, in which there are a center of warm anomaly in the Huanghai Sea and a center of cold anomaly in the East china Sea to be developing simultaneously. Using the Observed atmospheric forcing, the (decade) experiment forecast is made. Forecasting accuracy of warm (cold) anomaly is 3./44 (29/3. )' the ensemble accuracy reaches R = 91% and AMD = 0. 67 t. The chief affecting factors of O-SSTA for this case are shown, for warm anomaly: (1 ) afar radiation (weight is 64 % ), (2) the convergence of warm water (9% ), (3.) shallow-water effects; and for cold anomaly: (l) pumping of typhoon (44 % ), (2) entrainment of storm (24 % ), (3. latent heat (19 % ), respectively. It is identified that the formation of warm (cold) anomaly is a slower (faster) process.

关键词： Offshore-SSTA numerical forecasting shallow-water effect

Cryopreservation of amphioxus (Branchiostoma belcheri) spermatozoa

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Acta oceanologica Sinica 2009年第2期28卷 96-102页

作者： XU Yuyan ZHANG Shicui VERAPONG Vuthiphandchai SUBUNTITH Nimrat College of Food Science and Engineering Ocean University of China Qingdao 266003 China College of Marine Biology Ocean University of China Qingdao 266003 China Department of Aquatic Science Burapha University Chonburi 20131 Thailand Department of Microbiology and Environmental Science Program Faculty of Science Burapha University Chonburi 20131 Thailand

Amphioxus, Branchiostoma belcheri, a closest relative of vertebrates, is at a high risk of extinction due to a combination of low effective population size, altered native habitats and environmental pollution, yet little is known about cryopreservation of its gametes. This study deals with the cryopreservation of amphioxus senlen. The main findings are that （1） the extender of Yao et al. is the best one among the four extenders examined; （2） the appropriate ratio of semen to extender of Yao et al. plus cryoprotectant is from 1：5 to 1：7; （3. dimethyl sulfoxide （DMSO） and methanol are the better cryoprotectants than glycerol, with DMSO giving the best results; （4） the eggs fertilized with post-thaw spermatozoa are capable of developing to at least hatching stage, and the highest hatching rate is （12.4±3.0）%. This is the first report on freezing and thawing of amphioxus spermatozoa, providing a simple and practical protocol for cryopreservation of amphioxus spermatozoa and laying a foundation for safeguarding this endangered species.

关键词： amphioxus Branehiostoma beleheri cryopreservation spermatozoa motility

Numerical modelling of storm surges in the Beibu Gulf with SCM　

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Acta oceanologica Sinica 1994年第4期13卷 475-483页

作者： Sun Wenxin Luo Yiyong and Wang Jingyong (ocean university of qingdao,{3.)

On the basis of 3.dimensional nonlinear hydrodynamical equations and by using the improved SCM the tides and storm surges induced by Typhoons 7109 and 8007 in the Beibu Gulf are simulated. In addition, the nonlinear i... 详细信息

关键词： Separating current model nonlinear interaction finite time analytical solution

Modeling of suspended sediment transport with wave-induced longshore current in Huanghe (Yellow) River Delta

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Acta oceanologica Sinica 2009年第3期28卷 65-74页

作者： LI Changliang LIANG Bingchen ZHANG Jing College of Petroleum Engineering China University of Petroleum（East China） Qingdao266555 China Engineering College Ocean University of China Qingdao 266100 China

A three-dimensional suspended sediment model （SED） developed by the present authors is coupled with the combinatorial model of COHERENS （Luyten et al., 1999）（the three-dimensional coupled hydrodynamical-ecological model for Regional and Shelf Seas） and SWAN （Holthuijsen et al., 2004）（the third generation wave model）. SWAN is regarded as a subroutine of COHERENS and gets time- and space-varying current velocity and surface elevation from COHERENS. COHERENS gets time- and space- varying wave relevant parameters provided by SWAN. Effects of wave on current are applied in bottom shear stress, wave-induced depth-dependent radiation stress and surface drag coefficient calculation. At the same time, the damping function of suspended sediment on turbulence is introduced into COHERENS. So the sediment model SED has feedback on circulation model COHERENS. The SED obtains current associated parameters from COHERENS. Then a coupled hydrodynamic-sediment model COHERENS-SED being able to account for interaction between wave and current is obtained. COHERENS-SED is adopted to simulate three-dimensional suspended sediment transport in the Huanghe River delta. In terms of simulation results, there is obvious difference between top and bottom layer of wave-induced longshore current. The values of time series of sediment concentration gotten by COHERENS-SED have, generally, an accepted agreement extent with measurement. Significant wave heights and wave periods obtained by COHERENS-SED show that wave simulation case with currentts effect can give better agreement extent with measurement than case without current＇s effect. In the meantime, suspended sediment concentration distributing rule obtained by COHERENS-SED is similar to former researches and measurement.

关键词： Huanghe River delta suspended sediment wave-induced longshore current COHERENS SWAN COHERENS-SED