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chinese Science Bulletin 2002年第4期47卷 348-352页

作者： ZHAO Jianxin & YU KefuDepartment of earth sciences, University of Queensland, Brisbane, Qld 4072, Australia (e-mail: j.zhao@earth.uq.edu.au) south china sea institute of oceanology, chinese academy of sciences, guangzhou 501301, china (e-mail: kefuyu@scsi Department of earth sciences University of Queensland 4072 Brisbane QLD Australia south china sea institute of oceanology Chinese Academy of Sciences 501301 Guangzhou China

Systematic mass spectrometric 230Th ages are reported for a Ponies coral reef terrace from Dengloujiao, Leizhou Peninsula, south china sea. Seven episodes of coral growth were recognized in this terrace: 7125±96, 6764±29, 5826±37, 5006±54, 2543±24, 1915±15, and 1513±22 calendar years before present (cal. aBP). 50% of the coral age popula-tion fall between 7200 and 6600 cal. aBP, marking post-glacial stabilization of global sea level. Considering the facts that (i) Dengloujiao reef flat was measured at 1.6-2.5 m above modern tidal datum plane; (ii) modern Parties corals in the south china sea are living at least ~1 m below the modern tidal datum plane; (iii) the top 20-30 cm of the reef was eroded; and (iv) crustal subsidence in the region since mid-Holocene was negligible, we conclude that the above age groups record at least two major periods (7200-5000 and 2500-1500 cal. aBP) of high sea-level at least 2.9-3.8 m above the present-day level.

关键词： coral south china sea U-series dating sea level Holo-cene.

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

On biogeomorphology of Luhuitou fringing reef of Sanya City,Hainan Island,china

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chinese Science Bulletin 2001年第S1期46卷 97-102页

作者： ZHANG Qiaominsouth china sea institute of oceanology, chinese academy of sciences, guangzhou 510301, china (e-mail: qmzhang@***) south china sea institute of oceanology Chinese Academy of Sciences Guangzhou China

Based on comprehensive survey of 6 transects on Luhuitou fringing reef in Sanya City of Hainan Island, china, some features of its biogeomorphologic processes were found, including ( i ) three basic biogeomorphologic units: inner reef flat, outer reef flat and reef slope; (ii) two important biogeomorphologic boundary lines: up limit for live flat coral growing between inner and outer reef flats is Mean Lower Low Water of tropic tide±15 cm; the break in slope between reef flat and reef slope is Theoretical Lowest Tide ±15 cm; (iii) three types of reef flat profiles in response to distinctive Holocene sea level changes and dynamic condition: Luhuitou type responds to falling sea level and low wave energy; Xiaodonghai type to falling sea sevel and high wave energy; type for atolls of Nansha Islands to stable sea level and low wave energy; (iv) hermatypic coral community is the most essential member in coral reef ecosystem and plays the most important role in biogeomorphologic process. Over the past 30

关键词： fringing reefs biogeomorphology reef flat sea level change Hainan Island.

A preliminary analysis on lithospheric thickness and crustal ages in central basin of south china sea

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Acta Oceanologica Sinica 1997年第1期16卷 85-107页

作者： Chen Xue and Lin Jinfeng south china sea institute of oceanology, the chinese academy of sciences, guangzhou 510301, china south china sea institute of oceanology Chinese Academy of Sciences Guangzhou 510301 China

The models about lithospheric thickness and thermal conduction inside the lithosphere and the top layer of the asthenosphere have been proposed in this study for four type regions: the midoceanic ridge, the extinct spreading ridge, the lithospheric fault fissure and the mouth of the extinct submarine volcanoes which are in deep sea bottom. The solutions of the models are found to be the same. The formulas of temperature distribution inside the lithosphere and the top layer of the asthenosphere, the lithospheric thicknesses to the heat flow and the crustal ages to the heat flow are obtained. The crustal ages and the lithospheric thicknesses of the central basin are calculated. And they are used to draw the lithospheric thicknesses and crustal ages maps of the central basin (in this paper both the central basin and the basin are the central basin of the south china sea). According to their characteristics, the central basin is divided into three regions. The lithospheric thicknesses, crustal ages and heat flow distribution characteristics are discussed respectively. The formation and evolution of the south china sea are analysed and it is thought that the south china sea has undergone three episode-seafloor spreadings.

关键词： Thermal conduction equation lithospheric thickness crustal age evolution

Fouling in offshore areas southeast of the Zhujiang(Pearl)River Delta,the northern south china sea

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Acta Oceanologica Sinica 2003年第2期22卷 201-212页

作者： Yan Tao, Yan Wenxia, Dong Yu, Liang Guanhe, Yan Yan, Wang Huajie south china sea institute of oceanology,chinese academy of sciences,guangzhou 510301,china. south china sea Inst. of oceanology Chinese Academy of Sciences Guangzhou 510301 China

In order to understand the type and extent of marine fouling in offshore areas southeast ofthe Zhujiang (Pearl) River delta, within the period form May 1986 to June 1987, two biological buoys were deployed at water depths of 95 m and 113 m located in 114 km and 160 km off the coast of Hong Kong, respectively. Moreover, the fouling community of a Marex hydrological buoy located in 115 m depth water 172 km off Hong Kong was also surveyed. The results show that a total of 78 species were collected and identified. The panels exposed for 3 months were mainly dominated by stalked barnacles Conchoderma hunteri and Lepas anatifera and hydroids Orthopyxis sp. As for the buoys, including the subsurface buoy, and their mooring systems exposed for 6 and 12 months, respectively, some hard foulers such as common oysters, pearl oysters, acorn barnacles and bryozoans were also found. The compositions of fouling communities also varied greatly with depth.

关键词： Biofouling offshore structures the south china sea

Upper-ocean variation in the northern south china seafrom mooring station observations

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Acta Oceanologica Sinica 2000年第4期19卷 25-35页

作者： Fang Wendong, Shi Ping, Mao Qingwen, Gan Zijun (south china sea institute of oceanology, chinese academy of sciences, guangzhou 510301, china) south china sea Inst. of oceanology Chinese Academy of Sciences Guangzhou 510301 China

CTD temperature, salinity and ADCP current data, which were observed by R/V Shiyan No. 3 during the intensive observational period (IOP) of the south china sea monsoon experiment (SCSMeX), have been analyzed. Some study results from observations at a mooring station located at the vicinity of continental slope off the south of Dongsha Islands are shown. The dynamic and thermody namic structures as wall as their changes are analyzed to describe the upper-ocean variation in the northern south china sea during the summer monsoon onset and maintaining periods. The response of near surface water temperature, salinity and current to local sea surface winds is also discussed.

关键词： Northern south china sea upper-ocean variation summer monsoo$

Identification and analysis of shear waves recorded by three-component OBSs in northeastern south china sea

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Progress in Natural Science:Materials International 2008年第2期18卷 181-188页

作者： Minghui Zhao ,Xuelin Qiu,Shaohong Xia,Ping Wang,Kanyuan Xia,Huilong Xu Key Laboratory of Marginal sea Geology,south china sea institute of oceanology,chinese academy of sciences,guangzhou 510301,china Key Laboratory of Marginal sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China

Structure models associated with P-and S-wave velocities contain considerable amount of information on lithology and geophysical properties,which can be used to better understand the complexity of the deep crustal structure. However,records of converted shear waves are less due to the speciality of seismic survey at sea and the rigorous generated conditions. The study on shear waves has always been a weakness for studying the deep crustal structures of south china sea (SCS). In this paper,eleven three-component OBSs were deployed along the Profile OBS-2001 in northeastern SCS. After the data processing of polarization and band-pass filter,converted S-wave phases were identified in the radical component records of nine OBSs. Taking the OBS7 as an example,identification and analysis of converted shear waves were presented and discussed in detail. A few phase groups,such as PwSc,PgSs,PnSc,PmS,and PwSn,were found coming from the deep crust or Moho interface by simple theoretical model calculation and ray-tracing simulation. The results not only provide the underlying basis for studies of S-wave velocity structure and Poisson’s ratio structure,but also reveal the relationship between crustal petrology and seismology,which will be of importance for making full use of S-wave information in the future.

关键词： Converted shear wave Deep crustal structure Three-component ocean bottom seismometer Northeastern south china sea

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：碳酸盐沉积海南岛分带生态东海三亚造礁石珊瑚生物碎屑

Late Neogene radiolarian absence event in the southern south china sea and its paleoceanographic implication

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Progress in Natural Science:Materials International 2008年第3期18卷 281-287页

作者： Lili Zhanga,b, Muhong Chena, Lanlan Zhanga,b, Jun Lua, Rong Xianga a Key Laboratory of Marginal sea Geology, south china sea institute of oceanology, chinese academy of sciences, guangzhou 510301, china b Graduate University of chinese academy of sciences, Beijing 100039, china Key Laboratory of Marginal sea Geology South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China Graduate University of chinese academy of sciences Beijing 100039 China

Down-core variations of radiolarians at ODP Site 1143 in the southern south china sea (SCS) are presented for the last 12 Myr. The fluctuations of radiolarian abundances since the Late Miocene can be divided into three stages: a high abundance stage at 12-5.96 Myr, a radiolarian absent stage at 5.96-3.30 Myr and a gradual increasing stage after 3.30 Myr. The three stages correspond to the forming and vicissitudes of the Western Pacific Warm Pool (WPWP) and the eastern Asian Summer Monsoon (eASM). The radiolarian absence event (RAe) was also absent of diatom and occurred nearly simultaneously with the closures of the Panama Isthmus and the Indonesian seaway, which probably caused the reorganization of oceanic circulation systems. Accompanied this circulation reorganization was the weakening of the WPWP and the eASM, which probably led to a weakened upwelling in the southern SCS. In addition dissolved silica (Dsi) content in surface seawater might be very low during 5.96-3.30 Myr due to the ’’biogenic bloom" event, which consumed a large amount of Dsi in the surface seawater. All these factors together might lead to a great decrease of siliceous production in the southern SCS and consequently caused the RAe. Moreover, the dissolution of siliceous skeletons might also influence the abundance of radiolarians.

关键词： southern south china sea Late Neogene Radiolarian absence event

evaluation of a 3dVAR system for the south china sea

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Progress in Natural Science:Materials International 2008年第5期18卷 547-554页

作者： Xianjun Xiao a,b, Dongxiao Wang a, Changxiang Yan c, Jiang Zhu c a LeD, south china sea institute of oceanology, chinese academy of sciences, guangzhou 510301, china b NCC, china Meteorological Administration, Beijing 100081, china c institute of Atmospheric Physics, chinese academy of sciences, Beijing 100029, china LeD South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou 510301 China NCC China Meteorological Administration Beijing 100081 China institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

The authors evaluate a three-dimensional variational (3dVAR) system for the south china sea (SCS) in this study. The assimilation method applied in the system takes into consideration error correlation along each ground track and uses recursive lter for optimiza- tion. Data from three R/V cruises during the spring and summer of 1998 and the summer of 2000 are used to evaluate the system. The root-mean-square error and bias are reduced signi cantly and when the altimeter data are assimilated, the distribution of the error is much closer to the Gaussian distribution. Precipitation and river discharge in the southwestern SCS are reproduced, and the variability of sea surface height is e ciently transferred to the subsurface. The 3dVAR system performs well for each of the three cruises, suggesting that it is steady for routine usage.

关键词： south china sea Three-dimensional variational data assimilation Recursive lter