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fronts,baroclinic transport,and mesoscale variability of the Antarctic Circumpolar Current in the southeast Indian Ocean

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Acta Oceanologica Sinica 2012年第6期31卷 1-11页

作者： DUAN Yongliang HOU Yijun LIU Hongwei HU Po Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Key Laboratory of Ocean Circulation and Waves Chinese Academy of SciencesQingdao 266071 China University of Chinese Academy of Sciences Beijing 100049China

fronts, baroclinic transport, and mesoscale variability of the Antarctic Circumpolar Current （ACC） along 115°E are examined on the basis of CTD data from two hydrographic cruises occupied in 1995 as a part of the World Ocean Circulation Experiment （WOCE cruise I9S） and in 2004 as a part of CLIVAR/CO2 repeat hydrography program. The integrated baroclinic transport across I9S section is （97.2×106±2.2×106） m3/s relative to the deepest common level （DCL）. The net transport at the north end of I9S, determined by the south Australian circulation system, is about 16.5× 106 m3/s westward. Relying on a consistent set of water mass criteria and transport maxima, the ACC baroclinic transport, （117×106±6.7×106） m3/s to the east, is carried along three fronts： the Subantarctic Front （SAF） at a mean latitude of 44°-49°S carries （50.6×106=t=13.4×106） m3/s; the Polar Front （PF）, with the northern branch （PF-N） at 50.5°S and the southern branch （PF- S） at 58°S, carries （51.3×106±8.7×106） m3/s; finally, the southern ACC front （SACCF） and the southern boundary of the ACC （SB） consist of three cores between 59°S and 65°S that combined carry （15.2× 106±1.8× 106） m3/s. Mesoscale eddy features are identifiable in the CTD sections and tracked in concurrent maps of altimetric sea level anomalies （SLA） between 44°-48°S and 53°-57°S. Because of the remarkable mesoseale eddy features within the SAF observed in both the tracks of the cruises, the eastward transport of the SAF occurs at two latitude bands separating by 1°. Both the CTD and the altimetric data suggest that the mesoscale variability is concentrated around the Antarctic Polar Frontal Zone （APFZ） and causes the ACC fronts to merge, diverge, and to fluctuate in intensity and position along their paths.

关键词： Antarctic Circumpolar Current fronts transport eddies

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The study on three-dimensional numerical model and fronts of the Jiulong Estuary and the Xiamen Bay

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Acta Oceanologica Sinica 2012年第4期31卷 55-64页

作者： LUO Zhibin PAN Weiran LI Li ZHANG Guorong College of Oceanography and Environmental Science Xiamen UniversityXiamen 361005China Third Institute of Oceanography State Oceanic AdministrationXiamen 361005China

Applying the methods of on-site observation and dynamic model, the research on the fronts at the Jiulong Estuary has been carried out, during which spatial and temporal distribution, dynamic characteristics and formation mechanism of salinity fronts are analyzed and discussed. The research shows that the estuarine fronts mainly lie in the area from the Jiyu Islet to the Haimen Island, outside of Yuweizai to Hulishan cross-section, the near coast of Yuweizai and the south of the Songyu-Gulangyu Channel. The fronts in the former two regions are formed directly by plume, while the one near the coast of Yuweizai is a tidal intrusion front caused by flood current and the one at the south of the Songyu-Gulangyu Channel is the result of current shear transformation. Under normal circumstances, fresh water of the Jiulong River mainly influences the inside of the Xiamen Bay, and when it is in typhoon seasons, plume front can affect the Taiwan Strait and has an effect on the biogeochemical Drocesses in the strait.

关键词： Jiulong Estuary Xiamen Bay three-dimensional numerical model fronts

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Trends of sea surface temperature and sea surface temperature fronts in the South China Sea during 2003–2017

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Acta Oceanologica Sinica 2019年第4期38卷 106-115页

作者： Yi Yu Hao-Ran Zhang Jiangbo Jin Yuntao Wang State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural Resources College of Oceanography Hohai University International Center for Climate and Environment Sciences Institute of Atmospheric PhysicsChinese Academy of Sciences State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences

The trends of the sea surface temperature(SST) and SST fronts in the South China Sea(SCS) are analyzed during2003–2017 using high-resolution satellite data. The linear trend of the basin averaged SST is 0.31°C per decade,with the strongest warming identified in southeastern Vietnam. Although the rate of warming is comparable in summer and winter for the entire basin, the corresponding spatial patterns of the linear trend are substantially different between them. The SST trend to the west of the Luzon Strait is characterized by rapid warming in summer, exceeding approximately 0.6°C per decade, but the trend is insignificant in winter. The strongest warming trend occurs in the southeast of Vietnam in winter, with much less pronounced warming in summer. A positive trend of SST fronts is identified for the coast of China and is associated with increasing wind stress. The increasing trend of SST fronts is also found in the east of Vietnam. Large-scale circulation, such as El Ni?o, can influence the trends of the SST and SST fronts. A significant correlation is found between the SST anomaly and Ni?o3.4 index, and the ENSO signal leads by eight months. The basin averaged SST linear trends increase after the El Ni?o event(2009–2010), which is, at least, due to the rapid warming rate causing by the enhanced northeasterly wind. Peaks of positive anomalous SST and negatively anomalous SST fronts are found to co-occur with the strong El Ni?o events.

关键词： South China Sea sea surface temperature sea surface temperature fronts warming trend wind stress

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Steps of fronts in chemical engineering:An overview of the publications of FCSE

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Frontiers of Chemical Science and Engineering 2018年第4期12卷 593-597页

作者： Xiaowen Zhu Yaodong Huang Jing-Kang Wang School of Chemical Engineering and Technology Tianjin UniversityTianjin 300350China

The fronts of a subject could be perceived from the publications of top journals. We investigated four top journals on chemical engineering: AIChE Journal, Chemical Engineering Science, Industrial & Engineering Chemistry Research and Chemical Engineering Journal. Based on Web of Science, in the last five years, these four journals have published 21062 papers, including 590 highly cited papers and 31 “hot” papers among which only 7 are from Industrial & Engineering Chemistry Research and all the others from Chemical Engineering Journal (data obtained on November 17, 2018). The traditional research “Pure and pseudo-pure fluid thermophysical property evaluation and the open-source thermophysical property library CoolProp” is the most cited paper published in 2014 [1]. Both highly cited and “hot” papers were published in 2017 on electrodes of supercapacitors [2]. But researches on environmental science and engineering have been paid most attention with 17 of 27 both highly cited and “hot” papers on this research area. The most cited and “hottest” paper is “Boron nitride-based materials for the removal of pollutants from aqueous solutions: A review” in 2018 [3]. Over the past decades, research and technologies advancement in chemical science and engineering in China has expanded in a lightning speed globally. To meet the growing needs of knowledge exchange and understanding of the underlying scientific principles, we launched in 2007 a new journal named Frontiers of Chemical Engineering in China with all papers translated from the Chinese journals. Original research articles or reviews have been published since 2009. The new name Frontiers of Chemical Science and Engineering (FCSE) has begun only since 2011 and FCSE became one of the Transactions of the Chinese Academy of Engineering (CAE) in 2014. From CAE, we have received many supports, both academic and financial. Especially in the latest three years, we have organized some important Special Issues and Topics. For th

关键词： fronts Chemical Engineering fronts (meteorology) publications Steps Oceanic fronts

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Engineering fronts in 2018

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Engineering 2018年第6期4卷 748-753页

作者： Fang Cai Jiu-Ming Ji Zhi-Qiang Jiang Zhi-Rui Mu Xiang Wu Wen-Jiang Zheng Wei-Xing Zhou Shan-Tung Tu Xuhong Qian College of Distance Education East China University of Science and TechnologyShanghai 200237China Institute of Science and Technology Information East China University of Science and TechnologyShanghai 200237China Research Center for Econophysics&School of Business East China University of Science and TechnologyShanghai 200237China Centre for Strategic Studies Chinese Academy of EngineeringBeijing 100088China Key Laboratory of Pressurized System and Safety Ministry of Education&School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China East China Normal University Shanghai 200062China Shanghai Key Laboratory of Chemical Biology East China University of Science and TechnologyShanghai 200237China

*** Engineering science and technology is an important driving force in changing the world,and engineering frontiers(here referred to as“engineering fronts”)are important guidelines for future directions in the development of engineering science and *** trends in global engineering science and technology and quickly adapting to new directions in the current scientific and technological revolution have become strategic choices for countries all over the *** 2017,the Chinese Academy of Engineering has organized the Engineering fronts research project,together with Clarivate Analytics and Higher Education Press,with the hope of bringing together the expert knowledge of global engineering and technology talents,assessing global frontiers in engineering research and development,and developing strategic opportunities to provide a reference for active responses to global challenges and sustainable development.

关键词： Engineering fronts 2018

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Traveling Wavefronts on Reaction Diffusion Systems with Spatio-Temporal Delays

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Applied Mathematics 2013年第9期4卷 1278-1286页

作者： Xinli Han Lijun Pan College of Science Nanjing University of Posts and Telecommunications Nanjing China Department of Mathematics Nanjing University of Aeronautics and Astronautics Nanjing China

By using Schauder’s Fixed Point Theorem, we study the existence of traveling wave fronts for reaction-diffusion systems with spatio-temporal delays. In our results, we reduce the existence of traveling wave fronts to the existence of an admissible pair of upper solution and lower solution which are much easier to construct in practice.

关键词： Schauder’s Fixed Point Theorem Traveling Wave fronts Reaction-Diffusion Spatio-Temporal Delays

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Three—Dimensional Propagation of Magnetohydrodynamic Waves in the Solar Chromophere and Corona

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Chinese Physics Letters 2002年第11期19卷 1639-1642页

作者：李波郑惠南等 SchoolofEarthandSpaceSciences UniversityofScienceandTechnologyofChinaHefei230026

We study the three-dimensional magnetohydrodynamic (MHD) wave propagation in the solar atmosphere consisting of the chromosphere and corona. Pressure enhancement and velocity shear are implemented simultaneously at the bottom of the chromosphere. The global propagation of the incurred MHD waves, including fast-mode and slow-mode magnetoacoustic waves as well as Alfvén wave, can be identified. Wave front positions obtained numerically with respect to specific waves fit well with those calculated with local MHD wave speeds

关键词： Magnetohydrodynamics Chromosphere Corona fronts Solar atmospheric waves Wave propagation

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Weak Nonlinearity of Ablative Rayleigh-Taylor Instability

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Chinese Physics Letters 2008年第2期25卷 624-627页

作者：范征锋罗纪生 Department of Fluid Mechanics Tianjin University Tianjin 300072

The weakly nonlinear regime of single mode ablative Rayleigh-Taylor instability is studied, with consideration of preheat effect and the width of the ablation front. The Rayleigh-Taylor linear growth rate agrees well with the direct numerical simulation. For the density perturbation, the amplitude distribution of the fundamental mode has one peak value whereas those of the second and third harmonics have two and three peak values, respectively. Harmonics generation versus wave number is also given and it is close to the result of direct numerical simulation.

关键词： CONSISTENT STABILITY ANALYSIS INERTIAL CONFINEMENT FUSION GROWTH-RATE PLANAR TARGETS STABILIZATION fronts RATES

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Net-phytoplankton communities in the Western Boundary Currents and their environmental correlations

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Journal of Oceanology and Limnology 2018年第2期36卷 305-316页

作者： CHEN Yunyan SUN Xiaoxia ZHUN Mingliang Jiao Zhou Bay Marine Ecosystem Research Station Chinese Academy of Sciences Qingdao 266071 China University of Chinese Academy of Sciences Beijing 100049 China Laboratory of Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and Technology Qingdao 266071 China

This study investigated net-phytoplankton biomass, species composition, the phytoplankton abundance horizontal distribution, and the correlations between net-phytoplankton communities and mesoscale structure that were derived from the net samples taken from the Western Boundary Currents during summer, 2014. A total of 199 phytoplankton species belonging to 61 genera in four phyla were identified. The dominant species included C limacodium frauenfeldianum, Thalassiothrix longissima, Rhizosolenia styliformis var. styliformis, Pyrocystis noctiluca, Ceratium trichoceros, and Trichodesmium thiebautii. Four phytoplankton communities were divided by cluster analysis and the clusters were mainly associated with the North Equatorial Counter Current(NECC), the North Equatorial Current(NEC), the Subtropical Counter Current(STCC), and the Luzon Current(LC), respectively. The lowest phytoplankton cell abundance and the highest T richodesmium filament abundance were recorded in the STCC region. The principal component analysis showed that T. thiebautii preferred warm and nutrient poor water. There was also an increase in phytoplankton abundance and biomass near 5°N in the NECC region, where they benefit from upwellings and eddies.

关键词： net-phytoplankton communities Westem Boundary Currents upwelling eddies fronts

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Fishing Ground Distribution of Neon Flying Squid (Ommastrephes bartramii) in Relation to Oceanographic Conditions in the Northwest Pacific Ocean

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Journal of Ocean University of China 2017年第6期16卷 1157-1166页

作者： YU Wei CHEN Xinjun YI Qian College of Marine Sciences Shanghai Ocean University Shanghai 201306 P. R. China National Engineering Research Center for Oceanic Fisheries Shanghai Ocean University Shanghai 201306 P. R. China Key Laboratory of Sustainable Exploitation of Oceanic Fisheries Resources Ministry of Education Shanghai Ocean University Shanghai 201306 P. R. China Collaborative Innovation Center for Distant-water Fisheries Shanghai Ocean University Shanghai 201306 P. R. China

Neon flying squid, Ommastrephes bartramii, is a squid species of the North Pacific Ocean, which plays an important economical role in the international fishery. Logbook data for Chinese squid-jigging fishery over 2004–2011 were used to evaluate the relationship between the fishing grounds of the squid and the convergent frontal areas, which were defined by the contour lines of specific sea surface temperature(SST) and chlorophyll-a(Chl-a) concentration. Our results indicate that the SST in the range of 15 to 19℃ and the Chl-a concentration in the range of 0.1 to 0.4 mg m^(-3) are the favorable conditions for the aggregation of the squid. Additionally, we deduced that the SST at 17.5℃ and the Chl-a concentration at 0.25 mg m^(-3) are the optimal environmental conditions for the aggregation of O. bartramii. In August, the annual CPUE is positively correlated with the proportion of the fishing grounds with favorable SST and Chl-a concentration, as well as the combination of the two variables, implying that the abundance of the squid annually is largely depending on the presence of the favorable environmental conditions for fishery in August. Minor spatial difference between mean latitudinal location of the 17.5℃ SST and 0.25 mg m^(-3) Chl-a fronts can increase the CPUEs of O. bartramii. Furthermore, the monthly latitudinal gravity centers of the CPUE closely followed the mean latitudinal position of the contour lines of the 17.5℃ SST and the 0.25 mg m^(-3) Chl-a concentration. Our findings suggest the convergent oceanographic features(fronts) play significant roles in regulating the distribution and abundance of the western stock of the winter-spring cohort of O. bartramii, which can help people to improve their ability to discover the O. bartramii fishing grounds with higher productivity.

关键词： neon flying squid sea surface temperature chlorophyll-a oceanic fronts fishing ground the Northwest Pacific Ocean

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