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Journal of Environmental Sciences 1995年第4期7卷 461-467页

作者： Wen Congjiang Lu Deming Wang Shuquan,Wang Baosheng Hu Baoge(Department of Physics , ocean university of qingdao, qingdao 2.6003., china)

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关键词： environmental impact assessment electromagnetic radiation broadcasting station electromagneticpollution.

An experimenal analysis for the impact of 2D variation assimilation of satellite data on typhoon track simulation

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Acta oceanologica Sinica 2003年第4期22卷 511-522页

作者： Xie Hongqin1, Wu Zengmao1, Gao Shanhong1 1.Institute of Physical oceanography, ocean university of {3., qingdao 2.6003. china Institute of Physical oceanography Ocean University of China Qingdao 266003 China

A series of test simulations are performed to evaluate the impact of satellite-derived meteorological data on numerical typhoon track prediction. Geostationary meteorological satellite (GMS-5) and NOAA's TIROS operational vertical sounder (TOVS) observations are used in the experiments. A two-dimensional variation assimilation scheme is developed to assimilate the satellite data directly into the Penn State-NCAR nonhydrostatic meteorological model (MM5). Three-dimensional objective analyses fields based on T213.results and routine observations are employed as the background fields of the initialization. The comparisons of the simulated typhoon tracks are also carried out, which correspond respectively to the initialization scheme with two-dimensional variation (2D - Var), three-dimensional observational nudging and direct assimilation of satellite data. It is found that, comparing with the experiments without satellite data assimilation, the first two assimilation schemes lead to significant improvements on typhoon track prediction. Track errors reduce by 18 % at 12 h for 2D - Var and from about 16 % at 24 h to about 3. % at 48 h for observational nudging. The simulated results based on assimilating different kinds of satellite data are also compared.

关键词： 2D-Var assimilation satellite data observational nudging direct assimilation

Water masses in the northern South china Sea

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Acta oceanologica Sinica 1989年第3期8卷 337-350页

作者： FanLiqun, Su Yusong and Li Fengqi Zhanjiang Fisheries College, Zhanjiang , china ocean university of {3., {3., china

Using the fuzzy clustering as the principal method, eight water masses in the northern South china Sea (NSCS) are distinguished. They are Alongshore Diluted Water Mass (F), Nearshore Mixed Water Mass (M), Warm Surface Water Mass(WS), Surface Water Mass(S), Surface-Subsurface Mixed Water Mass(SU), Subsurface Water Mass (U), Subsurface-Intermediate Water Mass (UI) and Intermediate Water Mass (1). A synthertic study is made on the formations, basic properties and modified characters of each water mass and the regularities of their disributions and growth and decline variations . They may be classified into three types; the type of runoff-diluted water (F). the type of shallow sea-modified water (M, WS. S. and SU) and the type of deep sea-oceanic water (U, UI, and I).

关键词： In area Water masses in the northern South china Sea

Meso-scale circulation at the intermediate-depth east of Mindanao observed by Argo profiling floats

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Science china Earth Sciences 2010年第3期53卷 432-440页

作者： ZHOU Hui1, YUAN DongLiang1, GUO PeiFang2, SHI MaoChong2 & ZHANG QiLong 1 Key Laboratory of ocean Circulation and Wave Studies, Chinese Academy of Sciences, qingdao 266071, china 2 Physical oceanography Laboratory, ocean university of china, qingdao 266100, china Key Laboratory of ocean Circulation and Wave Studies Chinese Academy of Sciences Qingdao China Physical oceanography Laboratory Ocean University of China Qingdao China

The meso-scale circulation at the intermediate depth east of Mindanao is studied using Argo profiling floats observations. The trajectories and the parking-depth velocities of Argo floats show that the intermediate-depth circulation east of Mindanao contains significant meso-scale features that are highly variable both in space and in time. Both cyclonic and anticyclonic eddies at the intermediate depth (1000–2000 m) are indicated by the trajectories east of Mindanao. The mean tangential velocities of these eddies are about 10 cm/s at 2000 m and over 20 cm/s at 1000 m, which indicates that the geostrophic calculation may contain large errors due to the vigorous eddy activity at the reference levels. The analyses also suggest that these eddies might play an important role in mass and vorticity balances of the intermediate-depth circulation east of Mindanao.

关键词： Mindanao Current intermediate-depth circulation meso-scale eddy Argo profiling float

SENSITIVITY STUDY OF THE EFFECTS OF WAVE-INDUCED VERTICAL MIXING ON VERTICAL EXCHANGE PROCESSES

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Journal of Hydrodynamics 2010年第3期22卷 410-418页

作者： LIANG Bing-chen LEE Dong-yong LI Hua-jun ZHANG Jing Key Laboratory of ocean Engineering Shandong Province Ocean University of China Qingdao 266100 China Coastal and Harbour Engineering Research Center Korea Ocean Research and Development Institute AnsanKorea College of Engineering Ocean University of China Qingdao 266100 China

The hydrodynamic model COHERENS-SED, developed by the present authors through introducing wave-enhanced bottom stress, wave dependent surface drag coefficient, wave-induced surface mixing, SWAN to COHERENS, is modified to account for wave-induced vertical mixing. The COHERENS-SED model can also be used for one-dimensional, two-dimensional, three-dimensional current and salinity calculations. One-dimensional model and three-dimensional model are used to study the effects of the wave-induced vertical mixing. The horizontal current velocity profiles obtained by the model are in good agreement with the analytical velocity profiles under the same input conditions. Numerical results show that higher wave height would generally generate larger vertical eddy viscosity and lower horizontal velocity. The results for fresh water in Yellow River Delta show that the wave-induced vertical mixing increases the momentum of fresh water transferring ability downwards to seabed and salt water＇s mixing with upper fresh water. Fresh water flume length is compressed considerably.

关键词： Yellow River Delta COHERENS SWAN COHERENS-SED wave-induced vertical mixing

Isolation and identification of alginate-degrading bacteriaand formation of alginase

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Acta oceanologica Sinica 1999年第4期18卷 555-561页

作者： Han Baeqin Dai Jixun and Wang Hai( Marine Life Sciences college, ocean university of qingdao, qingdao 2.6003.china) Marine Life Sciences College Ocean University of Qingdao Qingdao 256003 China

Five strains of alginate-degrading bacteria Were isolated from the decaying parts of Laminria japonicaand Undaria pinnatifida and identified as Alteromonas espejiana (Strain A101, A102, A103. A105 ) and Alteromonas macleodii(Strain A104). When incubated at 25 t for 144 h in the liquid mediuxn which contamed 0. 5%peptone, 0. 3. -0. 6%sodium alginate, 0. 1 % yeast extract, 3. NaCI, pH 7. 5, the stain A102 pnduced the highest amount of alginase.

关键词： Alteromonas alginase isolation identification

The difference between the joint probability distributions of apparent wave heights and periods and individual wave heights and periods

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Acta oceanologica Sinica 2004年第3期23卷 399-406页

作者： ZHENGGuizhen JIANGXiulan HANShuzong LaboratoryofPhysicaloceanography ChinaOceanUniversityQingdao266003China qingdaoInstituteofArchitectureandEngineering Qingdao266031China

The joint distribution of wave heights and periods of individual waves is usually approximated by the joint distribution of apparent wave heights and periods. However there is difference between them. This difference is addressed and the theoretical joint distributions of apparent wave heights and periods due to Longuet-Higgins and Sun are modified to give more reasonable representations of the joint distribution of wave heights and periods of individual waves. The modification has overcome an inherent drawback of these joint PDFs that the mean wave period is infinite. A comparison is made between the modified formulae and the field data of Goda, which shows that the new formulae consist with the measurement better than their original counterparts.

关键词： sea waves wave statistics wave height wave period

REE and Sr-Nd isotope characteristics of hydrothermal chimney at Jade area in the Okinawa Trough

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Acta oceanologica Sinica 2004年第2期23卷 287-296页

作者： LIUYanguang MENGXianwei FUYunxia KeyLaboratoryofMarineSedimentologyandEnvironmentGeologyofStateoceanicAdministration Qingdao266061China GeologicalResourceandGeotechnicalEngineeringCooperationofqingdao Qingdao266071China

Hydrothermal chimney is a product of hydrothermal activity on the seabed. Chimney samples dredged from Jade hydrothermal area in Izena depression of the Okinawa Trough, are characterized by relatively enriched light rare earth elements (LREE) and strongly positive Eu anomalies. 87Sr/86Sr and 143.d/144Nd of these samples are exactly between those of seawater and of acidic pumice, averaged at 0.708928 and 0.512292, respectively. These characteristics imply that the main source of hydrothermal sulfide at Jade area is possibly the undersurface acidic rocks. The mineralizing mechanism can be summarized as follows: Large amount of mineralized material would be leached out and LREE-enriched hydrothermal solution would be subsequently produced as a result of thermo-chemical exchange reaction between acidic volcanic rocks and heated seawater that penetrated in advance from upper water mass. The spurting out from the seabed and quickly crystallizing in the seawater of hydrothermal solution are responsible for the formation of Cu-Zn sulfide and barite-amorphous SiO2 minerals that are characterized by enriched LREE and positively strong Eu anomalies.

关键词： hydrothermal chimney rare earth elements Sr and Nd isotopes

A thin-layer spectroelectrochemical study of 3.3.,5,5'-tetramethylbenzidine at SnO_2:F film optically transparent electrode

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Science china Chemistry 2004年第4期47卷 267-275页

作者： JIAO Kui1, YANG Tao2 & NIU Shuyan1,2 1. College of Chemistry and Molecular Engineering, qingdao university of Science and Technology, qingdao 266042, {3. 2. College of Chemistry and Chemical Engineering, ocean university of {3., qingdao 2.6003. china Correspondence should be addressed to Jiao Kui College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao China College of Chemistry and Chemical Engineering Ocean University of China Qingdao China

The electrooxidation of 3.3.,5,5′-tetramethylbenzidine (TMB) is dependent on the pH value of Britton-Robinson (B-R) buffer solution. In this work, the electrooxidation behavior of TMB was investigated with a SnO2:F film optically transparent thin-layer spectroelectrochemical cell. TMB underwent one two-electron electrooxidation process in the pH range from 2.0 to < 4.0, and two successive one-electron electrooxidation processes in the pH range from 4.0 to < 7.0 in the B-R buffer solution. At pH 6.5, the electrooxidative product of TMB generated a subsequent chemical reaction to yield an azo compound. Several spectroelectrochemical techniques, such as thin-layer cyclic voltammetry, thin-layer cyclic voltabsorptometry, thin-layer potential-controlled electrolysis absorptometry, thin-layer single-potential-step chronoabsorptometry, thin-layer dou-ble-potential-step chronoabsorptometry, thin-layer single-potential-step open-circuit relaxation chronoabsorptometry, were applied to this investigation. The formal potential E0’ and the electron transfer number corresponding to the electrooxidation of TMB in B-R buffer solution, and the reaction rate constant of the subsequent chemical reaction were determined.

关键词： 3.3.,5,5′-tetramethylbenzidine tin oxide film optically transparent electrode thin-layer spectroelectro-chemistry electrooxidation

A NONHYDROSTATIC NUMERICAL MODEL FOR DENSITY STRATIFIED FLOW AND ITS APPLICATIONS

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Journal of Hydrodynamics 2008年第6期20卷 706-712页

作者： LI Qun XU Zhao-ting Polar Research Institute of china （PRIC） Shanghai 200136 China Physical oceanography Institute Ocean University of China Qingdao 266100 China

A modular numerical model was developed for simulating density-stratified flow in domains with irregular bottom topography. The model was designed for examining interactions between stratified flow and topography, e.g,, tidally driven flow over two-dimensional sills or internal solitary waves propagating over a shoaling bed. The model was based on the non-hydrostatic vorticity-stream function equations for a continuously stratified fluid in a rotating frame. A self-adaptive grid was adopted in the vertical coordinate, the Alternative Direction Implicit （ADI） scheme was used for the time marching equations while the Poisson equation for stream-function was solved based on the Successive Over Relaxation （SOR） iteration with the Chebyshev acceleration. The numerical techniques were described and three applications of the model were presented.

关键词： nonhydrostatic assumption stratified flow self-adaptive grid nonlinear internal wave