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Modern microbialites and their environmental signifi-cance,Meiji reef atoll,Nansha (Spratly) Islands,south china sea

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Science china Earth Sciences 2008年第4期51卷 608-617页

作者： shen jianwei1 & wang yue1,2 1 department of marine geology, south china sea institute of oceanology Key Laboratory of Marginal sea geology, south china sea institute of oceanology and Guangzhou institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510301, china 2 Graduate University of the Chinese Academy of Sciences, Beijing 100049, china department of marine geology South China Sea Institute of Oceanology Guangzhou China Key Laboratory of Marginal sea geology South China Sea Institute of Oceanology and Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou China Graduate University of the Chinese Academy of Sciences Beijing China

Meiji (Mischief) coral atoll, in Nansha (Spratly) Islands, south china sea, consists of an annular reef rim surrounding a central lagoon. On the atoll rim there are either protuberant 'motu' (small coral patch reefs on the rim of atoll) islets or lower sandy cays that contain modern microbialite deposits on the corals in pinnacles and surrounding bottoms of the atoll. Microbialites, including villiform, hairy, and thin spine growth forms, as well as gelatinous masses, mats and encrustation, developed on coral colonies and atoll rim sediments between 0 and 15 m deep-water settings. The microbialites were produced by natural populations of filamentous cyanobacteria and grew on (1) bulbous corals together with Acropora sp., (2) on massive colonies of Galaxea fascicularis, (3) on dead Montipora digitata, and (4) on dead Acropora teres, some hairy microbialite growing around broken coral branches. This study demonstrates that microbial carbonates are developed in coral reefs of south china sea and indicates that microbial processes may be important in the construction of modern reef systems. The results have significance in the determination of nature and composition in microorganisms implied in the formation ancient microbialites, and permit evaluation of the importance of microbial deposits in mo-dern coral reefs and of 'microbialites' in biogeochemical cycles of modern coral reef systems. The re-sults also provide evidence of modern analogues for ancient microbialites in shallow-water settings, and combine with sedimentological studies of ancient microbialites to understand their controls.

关键词： Microbialite Meiji reef Nansha Island south china sea

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Ecological-sedimentary zonations and carbonate deposition,Xiaodonghai Reef Flat,Sanya,Hainan Island,china

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Science china Earth Sciences 2011年第3期54卷 359-371页

作者： wang yue1,2, shen jianwei1 & LONG JiangPing3 1 department of marine geology, south china sea institute of oceanology CAS Key Laboratory of Marginal sea geology, south china sea institute of oceanology, Chinese Academy of Sciences, Guangzhou 510301, china 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, china 3 The Second Institution of Oceanography, State Oceanic Administration, Hangzhou 310012, china department of marine geology South China Sea Institute of Oceanology Guangzhou China Graduate University of Chinese Academy of Sciences Beijing China CAS Key Laboratory of Marginal sea geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China The Second Institution of Oceanography State Oceanic Administration Hangzhou China

Modern fringing reefs are developed on the intertidal to subtidal area of Xiaodonghai bay, Sanya, Hainan Island. The reef flat extends several dozen meters toward the sea. Various ecological and sedimentary zonations can be distinguished, including, from land to sea, beachrocks, large massive corals, inner reef flat, outer reef flat, and fore-reef slope. The carbonate sediments and constituent hermatypic coral communities are different in these zones. The beachrocks are composed mainly of biological sands, including coral skeletons, algae, gastropods, bivalves, and benthic foraminifera. Quartz sands are less common in this zone. Carbonate diagenesis in beachrocks is characterized by early cementation. The fringing reef flat is progradationally developed toward the sea. Large massive corals grew in the zone next to the beachrocks. These corals are large, flat-toped, and autochthonous in the production of bioclastic grains and lime mud. Large and massive coral skeletons are surrounded by coral skeletal grains, bioclasts, and lime-mud sediments. The inner reef flat consists mainly of skeletons of branching corals that are covered by bioclasts and lime mud, and living corals are mostly massive in form. Statistical analysis of coral-community dynamics shows that the outer reef flat with strong waves is the most suitable place for hermatypic corals to flourish. There, the living corals are most densely distributed. Both massive corals and branching corals (e.g., Acropora corymbosa) are exceptionally healthy in this zone. Bioclasts and lime mud are washed out due to strong wave action. Microbial carbonates generally are deposited within cavities of the beachrocks and coral skeletal cavities and on the surfaces of bioclastic grains. The latter two types, however, are more common. Ecological-sedimentary zonations across the Xiaodonghai reef flat from beachrocks to outer reef flat are controlled by variations in wave strength and water energy. Microbial carbonates rarely deve

关键词： microbial carbonates ecological-sedimentary zonation cementation reef flat Hainan Island

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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 china, Qingdao 266003, china 2. Key Laboratory of Tropical marine Environmental Dynamics, south china sea institute of oceanology, Chinese Academy of Sciences, Guangdong 510301, china Physical Oceanography Laboratory Ocean University of China Qingdao China Key Laboratory of Tropical marine Environmental Dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences 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 (0.0242, 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 (0.2628, 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.

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Microbial carbonates in Holocene beachrocks,Shuiweiling,Luhuitou Peninsula,Hainan Island

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Science china Earth Sciences 2008年第1期51卷 30-40页

作者： TENG JianBin1,2 & shen jianwei1 1 department of marine geology, south china sea institute of oceanology CAS Key Laboratory of Marginal sea geology, south china sea institute of oceanology, Chinese Academy of Sciences, Guangzhou 510301, china 2 Graduate University of the Chinese Academy of Sciences, Beijing 100049, china department of marine geology South China Sea Institute of Oceanology CAS Key Laboratory of Marginal sea geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301 China Graduate University of the Chinese Academy of Sci department of marine geology South China Sea Institute of Oceanology CAS Key Laboratory of Marginal sea geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301 China

Two research methods, geomicrobiology and carbonate sedimentology, were adopted to study the microbial carbonates in the beachrocks, Shuiweiling, Luhuitou, Sanya City, Hainan Island. The results indicate that microbial carbonates occur in Shuiweiling beachrocks and cements related to microbial activitives are common. Microbial carbonates were mainly developed on the surfaces of coral skeletons and within the coral (fragments and shivers) skeletal cavities,and rarely grew in interspaces formed by coral and other biological detritus. The growth morphologies of microbial carbonates are various, including stromatolitic lamination, thin crusts, dome-like, and microbialites. Microbial carbonates commonly trap fine-sized bioclasts, contain tubular filaments, and show laminated growth striation. Microbial carbonates within the coral skeletal cavities are generally stromatolitic cone-shaped, with a random growth direction along the bearing of trend of cavities, showing distinct growth laminae and recognizable growth phases. It is a special growth pattern of crypt microbial carbonates. Microbial cements occur mainly in shape of needle cement, calcified filaments, microborings, and calcified framboidal spheres. The needle cement is the most common type. These microbial cements indicate that microbial activities and microbial carbonates played an important role in beachrock formation in which carbonates were dominant components and the climate of tropical ocean monsoon was influential. Such microbial carbonates and microbial cementation have not been reported here from beachrocks along the northern shorelines of the south china sea. The results support a clear microbial origin for certain carbonate cements in beachrocks, confirm that microbial carbonates are a significant contributor to carbonate sedimentation, and widen the knowledge of beachrocks from a new field.

关键词： microbial carbonates microbial cements beachrock Holocene Hainan Island

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Growth performance and physiological parameters of the second generation selected and control groups of Pinctada martensii

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Acta Oceanologica Sinica 2011年第2期30卷 120-125页

作者： DENG yuewen YU Ziniu DU Xiaodong wang Qingheng FU Shao Fisheries College Guangdong Ocean University Zhanjiang 524025 China south china sea institute of oceanology Chinese Academy of Sciences Guangzhou 510301 China

In May of 2007,the second generation selected （SS） and control （SC） groups of pearl oyster Pinctada martensii were established by selecting 10% breeders with the largest and mean shell length,respectively,from the first generation selected *** performance of the SS and SC groups were compared on the basis of measurement data at Days 8,18,60,95,195 and *** Day 365,100 individuals （60.0–75.0 mm at shell length） were sampled from each group and then subjected to the experiment where physiological parameters such as filtrate rate,oxygen consumption and ammonia excretion were measured at 15,20,25 and 30°*** results show that the SS group had significantly larger mean shell length and shell height than the SC group at Days 8,18,60,95,195 and 365 （P 0.05）.The genetic gains at different ages varied from 6.0% to 17.0% for shell length and 5.7% to 14.6% for shell height,*** 15,20,25 and 30 ° C,the SS groups had significantly larger filtrate rate than the SC group （P 0.05）.At 15 and 25 °C,the differences in oxygen consumption rate between the SS and SC groups were not significant （P 0.05）.At 20 and 30 °C,however,the oxygen consumption rate of the SS group was significantly larger than the SC group （P 0.05）.At 15,20,25 and 30 °C,there were no significant differences in ammonia excretion rate between the SS and SC groups （P 0.05）.The present results indicate that there existed considerable genetic variability in the base population and a further selection could be likely *** selection for faster growth might produce animals that had higher intake of metabolizable energy by virtue of faster filtrating behavior.

关键词： Pinctada martensii the second generation selected group growth genetic gains physiological parameters

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The characteristics of sea fog with different airflow over the Huanghai sea in boreal spring

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Acta Oceanologica Sinica 2010年第4期29卷 3-12页

作者： HUANG Jian wang Xin ZHOU Wen HUANG Huijun wang Dongxiao ZHOU Faxiu institute of Tropical and marine Meteorology China Meteorological Administration Guangzhou 510080 China Guy Carpenter Asia-Pacific Climate Impact Centre School of Energy and Environment City University of Hong Kong Hong Kong China CAS key laboratory of tropical marine environmental dynamics South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China department of meteorology Ocean University of China Qingdao 262003 China

Using the observations from ICOADS datasets and contemporaneous NCEP/NCAR reanalysis datasets during 1960-2002,the study classifies the airflows in favor of sea fog over the Huanghai （Yellow） sea in boreal spring （April-May） with the method of trajectory analysis,and analyzes the changes of proportions of warm and cold sea fogs along different paths of *** to the heat balance equation,we investigate the relationships between the marine meteorological conditions and the proportion of warm and cold sea fog along different airflow *** major results are summarized as follows.（1） sea fogs over the Huanghai sea in spring are not only warm fog but also cold *** proportion of warm fog only accounts for 44% in April,while increases as high as 57% in May.（2） Four primary airflow paths leading to spring sea fog are *** are originated from the northwest,east,southeast and southwest of the Huanghai sea,*** occurrence ratios of the warm sea fog along the east and southeast airflow paths are high of 55% and 70%,while these along the southwest and northwest airflow paths are merely 17.9% and 50%.（3） The key physical processes governing the warm/cold sea fog are heat advection transport,longwave radiation cooling at fog top,solar shortwave warming and latent heat flux between airsea interfaces.（4） The characteristics of sea fog along the four airflow paths relate closely to the conditions of water vapor advection,and the vertical distribution of relative humidity.

关键词： spring sea fog over the Huanghai sea airflow paths water vapor flux heat advection vertical distribution of water vapor

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Coastal geomorphic evolution at the Denglou Cape, the Leizhou Peninsula

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Acta Oceanologica Sinica 2002年第4期 591-605页

作者： wang Lirong1,Zhao Huanting1,Song Chaojing1, Yuan Jiayi2,Yu Hongbing1 1. south china sea institute of oceanology, Chinese Academy of Sciences, Guangzhou 510301, china 2. department of Geoscience,Zhongshan University, Guangzhou 510275,china

The Denglou Cape, southwest of the Leizhou Peninsula, is the most typical tropical coast in the continent of *** coastal geomorphic development basics of the geology and Quaternary environment change are discussed. Aerial photograph interpretation with fieldwork is applied to draw the outlines of geomorphic types. Based on the investigative data, the exogenic forces and marine organism conditions concerning tropical coast development in the area are expounded, and coastal dynamo-deposition geomorphic bodies are analysed, mainly with sea cliff-abrasion platform,barrier-lagoon system, modern beach, coral reef and mangrove tidal flat, and the general process of coastal evolution at this area, as well as coastline changes since middle Holocene transgression.

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Progress and future prospects of decadal prediction and data assimilation:A review

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Atmospheric and Oceanic Science Letters 2024年第1期17卷 53-62页

作者： Wen Zhou Jinxiao Li Zixiang Yan Zili shen Bo Wu Bin wang Ronghua Zhang Zhijin Li Key Laboratory of Polar Atmosphere-ocean-ice System for Weather and Climate of the MOE Department of Atmospheric and Oceanic Science&Institute of Atmospheric ScienceFudan UniversityShanghaiChina Key Laboratory for Polar Science of the MNR Polar Research Institute of ChinaShanghaiChina Shanghai Investigation Design and Research Institute Co.Ltd.ShanghaiChina LASG Institute of Atmospheric PhysicsChinese Academy of SciencesBeijingChina School of marine Science Nanjing University of Information Science&TechnologyNanjingChina

年代际预测,也称为“近期气候预测”,旨在预测未来1-10年内的气候变化,是气候预测和气候变化研究领域的一个新关注点.它位于季节至年际预测和长期气候变化预测之间,结合了初值问题和外部强迫问题的两个方面.年代际预测的核心技术在于用... 详细信息

年代际预测,也称为“近期气候预测”,旨在预测未来1-10年内的气候变化,是气候预测和气候变化研究领域的一个新关注点.它位于季节至年际预测和长期气候变化预测之间,结合了初值问题和外部强迫问题的两个方面.年代际预测的核心技术在于用于模式初始化的同化方法的准确性和效率,其目标是为模式提供准确的初始条件,其中包含观测到的气候系统内部变率,年代际预测的初始化通常涉及在耦合框架内同化海洋观测,其中观测到的信号通过耦合过程传递到其他分量,如大气和海冰.然而,最近的研究越来越关注在海洋-大气耦合模式中探索耦合数据同化(CDA),有人认为CDA有潜力显著提高年代际预测技巧.本文综合评述了该领域的三个方面的研究现状:初始化方法,年代际气候预测的可预测性和预测技巧,以及年代际预测的未来发展和挑战.

关键词：年代际预测四维数据同化海气相互作用

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DYNAMICS OF THE KUROSHIO INTRUSION INTO THE southEAST china ADJACENT WATERS-A NUMERICAL STUDY

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Journal of Hydrodynamics 2001年第3期13卷 28-33页

作者： Fang, yue Fang, Guo-Hong wang, Kai Wei, Ze-Xun Inst. of oceanology Chinese Acad. of Sci. Qingdao 266071 China

A series of numerical experiments have been carried out to study the dynamics of the Kuroshio intrusion into the north south china sea (SCS) and the East china sea (ECS). The Kuroshio itself can intrude into the SCS through the middle Luzon Strait, and into the ECS northeast to Taiwan and west of Tokara Strait. An inshore current from the north SCS through Taiwan Strait, shelf region of the ECS and to the Korea Strait is induced. The numerical experiments show that the momentum advection plays a substantial role in generating the NW Luzon Cyclonic Gyre (NWLCG) and has great influence on the pathway of the SCS Branch of the Kuroshio. The NWLCG is thus partly of inertial recirculation recirculation. Topography is a key factor for the formation of the circulation in the study area. The beta effect and momentum advention may intensify the Kuroshio intrusion northeast of Taiwan to a certain degree, but not large.

关键词： Dynamics Numerical analysis Salt water intrusion

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Satellite Tracking of Post-nesting Migration of Green Turtles

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Bulletin of the Chinese Academy of Sciences 2002年第2期16卷 102-105页

作者： wang Wenzhi, wang Dongxiao , wang Huajie & Song Xiaojun(Key Laboratory of Tropical marine Environment Dynamics, south china sea institute of oceanology, CAS, 510301 Guangzhou, china)4 (south china institute for Endangered Species) Key Laboratory of Tropical marine Environment Dynamics South China Sea Institute of OceanologyCAS510301 GuangzhouChina south china institute for Endangered Species

During the period August 17-28, 2001, in collaboration with the Provincial Bureau of Oceanography & Fisheries of Guangdong and the south china institute for Endangered Species, the south china sea institute of oceanology, a CAS affiliate in the city of Guangzhou, conducted a sea turtle satellite tracking project at Haigui Bay (Fig. 1) in the vicinity of Gangkou Town, Huidong County, Guangdong Province.

关键词： Satellite Tracking of Post-nesting Migration of Green Turtles Bay

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