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Energy distributions of the large-scale horizontal currents caused by wind in the baroclinic ocean

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Science china Earth Sciences 2005年第12期48卷 2267-2275页

作者： ZHOU Lei1, TIAN Jiwei1 & WANG Dongxiao2.1. Physical oceanography Laboratory, ocean University of {2., qingdao 2.6003, {2. 2. Key Laboratory of Tropical Marine Environmental Dynamics, South {2. Sea Institute of oceanology, Chinese Academy of Sciences, Guangdong 510301, {2. 1. Physical oceanography Laboratory Ocean University of China 266003 Qingdao China 2. Key Laboratory of Tropical Marine Environmental Dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences 510301 Guangdong China

ocean current data for nearly 3 months in the South china Sea (SCS), combined with the NCEP/NCAR reanalysis wind data, are analyzed. The results indicate that the wind en-ergy enters the upper mixed layer in a wide continuous frequency band. In addition, the interac-tion between the low-frequency wind anomaly and the low-frequency current anomaly is the most ‘effective’ way for the energy input from the wind to the upper ocean. However, only the inertial and the near inertial energy propagate downwards through the upper mixed layer. The down-ward-propagating energy is distributed into the barotropic currents, the baroclinic currents and each mode of the baroclinic currents following the normal distributions. The energy change ratios between the barotropic motion to the baroclinic motion induced by the wind present a normal distribution of N (0.02.2. 0.3947). The energy change ratios of the first 4 baroclinic modes to the whole baroclinic currents also follow the normal distributions. The first baroclinic mode follows N (0.2.2., 0.1872., the second N (0.1979, 0.1504), the third N (0.1331, 0.1633), and the fourth N (0.0650, 0.1540), respectively.

关键词： wind anomaly, ocean current anomaly, energy transportation, wide frequency band, near-inertial fre-quency, energy distribution.

Ancient Changjiang channel system in the East china Sea continental shelf during the last glaciation

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Science china Earth Sciences 2005年第11期48卷 1972-1978页

作者： LI Guangxue1,2. LIU Yong1, YANG Zigeng3, YUE Shuhong4, YANG Wenda5 & HAN Xibin1 1. College of Marine Geo-science, ocean University of {2., qingdao 2.6003, {2. 2. Shandong Key Laboratory of Sea Floor Resource and Exploration Technique, qingdao 2.6003, {2. 3. qingdao Institute of Marine Geology, qingdao 2.6071, {2. 4. College of Marine Environment, ocean University of {2., qingdao 2.6003, {2. 5. First Survey Team of Marine Geology, Shanghai Bureau of Petroleum, Shanghai 2.12.8, {2. 1. College of Marine Geo-science Ocean University of China 266003 Qingdao China 2. Shandong Key Laboratory of Sea Floor Resource and Exploration Technique 266003 Qingdao China 3. qingdao Institute of Marine Geology 266071 Qingdao China 4. College of Marine Environment Ocean University of China 266003 Qingdao China 5. First Survey Team of Marine Geology Shanghai Bureau of Petroleum 201208 Shanghai China

Based on the data of high-resolution seismic profiles, an ancient river channel sys-tem of the last glaciation occurred along the Zhedong and Xihu depression in the southeast of Hupijiao rise. The distribution of the channel fill system shows that the ancient Changjiang River went through the Changjiang depression into the low land plain of the outside continental shelf during the low sea level cycle of the last glaciation. The big channel fill into Okinawa Trough is not found due to the depletion of the river kinetic energy in the low land plain. The river discharge dispersal was of an important role to the dilution of the northern Okinawa Trough sea at that time. Six ancient river channel systems (A―F), which are main distributaries of ancient Changjiang in the East china Sea continental shelf during the last glaciation, may be buried off the modern Changjiang estuary. The distribution of these channels coincides with the zonal elevations in the sea floor.

关键词： last glaciation, continental shelf plain, Changjiang River, ancient channel fill

Israeli Water Achievements Today and Enlightenment to china

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Chinese Journal of Population,Resources and Environment 2008年第4期6卷 72-77页

作者： Sun Lei1,2. Xu Lanqing3 1. Institute of Environmental Science and engineering, ocean University of {2., qingdao Shandong 2.6100, {2. 2. Department of Soil and Water Sciences, Faculty of Agricultural, Food and Environmental Quality Sciences, the Hebrew University of Jerusalem, 76100, Israel 3. Logistics Group of ocean University of {2., qingdao Shandong 2.6100, {2. Institute of Environmental Science and engineering Ocean University of China Qingdao Shandong 266100 China Department of Soil and Water Sciences Faculty of Agricultural Food and Environmental Quality Sciences the Hebrew University of Jerusalem 76100 Israel Logistics Group of ocean University of china Qingdao Shandong 266100 China

Despite the endemic drought, arid climate and associated limited freshwater resources, as well as difficult geopolitical realities, Israel can provide a reliable supply of high quality water to a rapidly growing population. The achievements of water supply in Israel can be summarized as water technologies (like water transportation and purification, desalination, wastewater treatment, effluent reuse, storm water catchment, control systems, rain enhancement and drip irrigation, etc.), water management and legislation as well as water industry. In view of the national concern regarding the quality and quantity of the water, the skills, technologies and know-how that Israel has accumulated in water supply and irrigation can give us enlightenment that is also presented in this paper.

关键词： Israel china water technology water management water industry

The coupling instability of Rossby and topographic Rossby waves in the equatorial area

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Science china Earth Sciences 2005年第10期48卷 1792-1801页

作者： CHAO Jiping1,2. LIU Lin1,3 & YU Weidong1 1. Laboratory of Marine Science and Numerical Modeling, State oceanic Administration, qingdao 2.6061, {2. 2. National Research Center for Marine Environmental Forecasts, State oceanic Administration, Beijing 100081, {2. 3. ocean University of {2., qingdao 2.6003, {2. Laboratory of Marine Science and Numerical Modeling State oceanic Administration qingdao {2. National Research Center for Marine Environmental Forecasts State oceanic Administration Beijing china ocean University of china {2. china

In case of considering the fact that the tropical ocean thermocline or the lower at-mosphere height field has the meridional variation, the topographic Rossby wave will be excited. Also the background geostrophic current emerges. Under such conditions, the topographic Rossby wave can interact with the classical Rossby wave at some parameter band and thus brings a new kind of instability, which may be of potential application in understanding some phenomena of the ENSO cycle.

关键词： thermocline variation, equatorial jet, Rossby wave, topographic Rossby wave, coupling instability

Adsorption of zinc on manganite(γ-MnOOH): particle concentration effect and adsorption reversibility

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Journal of Environmental Sciences 2004年第4期16卷 627-630页

作者： QIN Yan-wen1, PAN Gang 1,2., ZHANG Ming-ming1, LI Xian-liang1 (1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, china. 2. qingdao University of Science & Technology, qingdao 2.6042. china) State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing 100085 China.

The adsorption and desorption processes of Zn(Ⅱ) on γ-MnOOH as a function of particle concentrations(C p) were studied. An obvious C p effect was observed in this adsorption system. The degree of adsorption hysteresis increased greatly with the increasing of C p, indicating that the extent of the real metastable-equilibrium states deviating from the ideal equilibrium state was enhanced with the increasing of C p. The C p-reversibility relationship confirmed the metastable-equilibrium adsorption(MEA) inequality(Pan, 1998a), which was the core formulation of the MEA theory. Because the MEA inequality was based on the basic hypothesis of MEA theory that adsorption density Γ is not a state variable, the C p-reversibility relationship gave indirect evidence to the basic hypothesis of MEA theory.

关键词： zinc γ-MnOOH adsorption reversibility

Biomass of meiobenthic in the Bohai Sea, china

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Acta oceanologica Sinica 2001年第3期20卷 435-442页

作者： Guo Yuqing, Zhang Zhinan, Mu Fanghong 1. Department of Life Science, ocean University of qingdao, qingdao 2.6003, china 2. Agricultural College, jimei University, Xiamen 36102., china Department of Life Science Ocean University of Qingdao Qingdao 266003 China Agricultural College Jimei University Xiamen 361021 China

A grid of 2. stations, giving a broad geographic coverage of the Bohai Sea and the Bohai Strait was selected. Undisturbed sediments were collected from sampling stations during cruises in June 1997, in September/October 1998 and again in April/May 1999. Based on the results of Juario (1975), the average biomass, 0.404 g/(m2.) of meiofauna (including nematode, harpacticoida, bivalve larvae, polycheata and kinorhyncha) in the Bohai Sea is given and accounts for 4.5 percent of the macrofauna in the Bohai Sea. The horizontal distribution of the biomass of meiofauna showed that it was higher at the stations of middle east part of the Bohai Sea and the strait in 1998 and 1999 cruises and it decreased at the stations near to the strait mouth and increased at Station B1 in 1999 cruise. The annual average production in the Bohai Sea is 3.636 g/m2.calculated in term of the formula P = 9B. Compared with the biomass of other sea areas in the world, the biomass of the Bohai Sea is similar but slightly lower. The individual average dry weight of nematodes given by different authors is analyzed.

关键词： Meiofauna free-living marine nematodes benthic copepods biomass the Bohai Sea

Evolution history and trend of the modern Huanghe River Delta

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Acta oceanologica Sinica 2010年第2期29卷 40-52页

作者： MA Yanyan LI Guangxue College of Marine Geosciences Ocean University of China Qingdao 266100 China Key Laboratory of Submarine Geosciences and Prospecting Techniques of Ministry of Education Qingdao 266100 China

The evolvement history of modern Huanghe River Delta tidal flat, coastline and underwater terrain were studied based on the analysis of remote sensing images and water depth data. Based on the analysis of seafloor terrain evolution on different historical stages, a formula simulating the erosion and deposition evolvement model of subaqueous Huanghe River Delta slope was proposed, and the evolvement trend of the subaqueous delta terrain was predicted. The result shows that the equilibrium transition zone is near the water depth of 12.m with seabed erosion in shallower water and accumulation in deeper water during the first 150 a after the river channel was deserted. In the meantime, the underwater slope became gentler and the coastal erosion rate became slow gradually. Then, the subaqueous delta slope changed to up concave from upper convex, and the shape of subaqueous delta disappeared. The coast type changed to silt-mud coast about 100-150 a after the river course was deserted. The erosion depth in the foot of the seawall is calculated based on the formula.

关键词： modern Huanghe River Delta coast evolvement scour depth in the foot of seawall

Colloidal organic carbon in Huanghe, Changjiang and Qiantang River

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Chinese Science Bulletin 1998年第11期43卷 915-917页

作者： WANG Jiangtao College of Chemistry and Chemical engineering, {2. University of qingdao, qingdao 2.6003, china Callege of Chemistry and Chemical engineering Ocean University of Qingdao Qingdao China

Cross-flow ultrafiltration techniques have been used to separate colloidal organic carbon (COC) from natural water, and COC in three water samples that were collected from Huanghe, Changjiang and Qiantang River was determined. On average, COC comprised about 68.6% of the total dissolved organic carbon. The abundance of COC suggested that COC could play important roles in input fluxes and biogeochemistry of organic carbon.

关键词： cross-flow ultrafiltration colloidal organic carbon.

The Film-forming Behavior on the Interface between Air and Hydrosol of Fe_2._3 Nanoparticles

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Journal of Wuhan University of Technology(Materials Science) 2009年第4期24卷 525-527页

作者：曹立新 Institute of Materials Sciences and engineering Ocean University of China Changchun Institute of Applied Chemistry Chinese Academy of Science

The film forming behavior on the interface between air and hydrosol of Fe2.3 nanoparticles was investigated by the surface pressure-time isotherms, the surface pressure-trough area isotherms, Brewster angle microscopy and transmission electron microscopy. It is found that the freshly prepared hydrosol of Fe2.3 nanoparticles is not stable. The surface pressure increases with the aging time and finally approaches a constant, and the smaller the concentration is, the smaller the surface pressure is stabilized at and the shorter the time the hydrosol reaching stable needs. The surface pressure also increases with compression until collapsed, and the longer the hydrosol is aged, the higher the collapsing pressure is. A uniform and compact film composed of nanoparticles with an average diameter of about 2.3 nm on the air-hydrosol interface is observed by Brewster angle microscope and transmission electron microscope.

关键词： film interface air and hydrosol Fe2.3 nanoparticles