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Acta Oceanologica Sinica 2018年第10期37卷 202-204页

作者： liu Zhensheng sun Dong LI Xiaohui Second institute of Oceanography State Oceanic Administration Key Laboratory of Marine Ecosystem and Biogeochemistry State Oceanic Administration

The male of Candacia varicans Giesbrecht, 1892.from the south china {2. was recorded and described. In general, the male of C. varicans is morphologically similar to those of C. arrnata and C. curta. However, it is distinguished with them by below several morphological characters：（1） posterolateral corners of the fifth thoracic segment prominently sharp and symmetrical; （2. right side of posterior edge of genital segment with a small backward protuberance; and （3. the dorsal surface of the third segment of the fifth pereiopod with a squamashaped protuberance.

关键词： copepods new record Candacia varicans the south china {2.

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大亚湾微表层和次表层海水营养盐的研究

台湾海峡 2002年第3期21卷 310-316页

作者：彭云辉王肇鼎孙丽华韦桂峰朱卓洪中国科学院南海海洋研究所广东广州510301

根据 1 998年秋季 (1 0、1 1月 )、1 999年春、秋季 (4、5、1 0月 ) 5个航次对大亚湾海区微、次表层的调查结果 ,分析了微表层海水对氮、磷、硅营养盐的富集概况 ,讨论了营养盐与环境因子的关系 .结果表明 :大亚湾海区微表层海水对氮、... 详细信息

根据 1 998年秋季 (1 0、1 1月 )、1 999年春、秋季 (4、5、1 0月 ) 5个航次对大亚湾海区微、次表层的调查结果 ,分析了微表层海水对氮、磷、硅营养盐的富集概况 ,讨论了营养盐与环境因子的关系 .结果表明 :大亚湾海区微表层海水对氮、磷、硅营养盐均有富集作用 ,因海况及季节不同 ,富集因数 (EF)与其他海区的有所差别 ;无论夏季或秋季 ,大亚湾海区微表层海水中无机氮都以NH4 N为主要存在形态 ;其余水层则以NO3.N为主要存在形态 .结果还表明 ,微表层、次表层海水中NH4 N与BOD5 、COD测值都呈高度显著正相关 ,与PO4 P和SiO3.Si含量均无相关 ,说明大亚湾海区水中含氮有机物较含磷有机物丰富 .

关键词：微表层次表层富集因数营养盐大亚湾海水

Plate convergence in the Indo-Pacific region

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Journal of oceanology and Limnology 2020年第4期38卷 1008-1017页

作者： sun Weidong ZHANG Lipeng LIAO Renqiang sun Saijun LI Congying {2. He Center of Deep sea Research Institute of OceanologyCenter for Ocean Mega-ScienceChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China University of chinese academy of Sciences Beijing 100049China

The Indo-Pacific convergence region is the best target to solve the teo remaining challenges of the plate tectonics theory,i.e.,subduction initiation and the driving force of plate *** studies proposed that the Izu-Bonin subduction initiation belongs to spontaneous initiation,which implies that it started from extension,followed by low angle *** geodynamic modeling suggests that the initiation of plate subduction likely occurred along a transform fault,which put the young spreading ridge in direct contact with old oceanic ***,however,does not explain the simultaneous subduction initiation in the west Pacific region in the ***,the subduction initiations in the Izu-BoninMariana,the Aleutian,and the Tonga-Kermadec trenches are associated with oceanic crusts of different ages,yet they occurred at roughly the same time,suggesting that they were all triggered by a maj or change in the Pacific ***,low angle subduction induces compression rather than extension,which requires external compression *** that the famous Hawaiian-Emperor bending occurred roughly at the same time with the onset of westward subductions in the west Pacific,we propose that these Cenozoic subductions were initiated by the steering of the Pacific plate,which are classified as induced *** subduction initiation usually occurs in young ocean basins,for{2. single-track *** closure s of Neo-Tethys Oceans were likely triggered by plume s in the {3.,for{2. northward ***,the Indian plate kept on moving northward more than 50 Ma after the collision between the Indian and Eurasian continents and the break-off of the subducted oceanic slab attached to *** strongly suggests that slab pull is not the main driving force of plate tectonics,whereas slab sliding is.

关键词： plate tectonics subduction initiation drifting history Pacific plate Indian plate slab sliding

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海气关系的季节变化和时间—空间尺度依赖性

大气科学 2024年第1期48卷 76-91页

作者：吴仁广孙小山浙江大学地球科学学院杭州310058 中国科学院大气物理研究所季风系统研究中心北京100029

本文根据近年来对于表面湍流热通量和海表面温度变化关系的分析回顾了海气关系的季节变化和时间—空间尺度依赖性。内容包括表面湍流热通量和海表面温度变化关系的表征方法、区域变化、季节变化和随时间、空间尺度的变化,以及表面风速... 详细信息

本文根据近年来对于表面湍流热通量和海表面温度变化关系的分析回顾了海气关系的季节变化和时间—空间尺度依赖性。内容包括表面湍流热通量和海表面温度变化关系的表征方法、区域变化、季节变化和随时间、空间尺度的变化,以及表面风速和海气湿度差对表面潜热通量和海表面温度变化关系的相对贡献。表面湍流热通量和海表面温度变化关系在中纬度海洋锋区和副热带涡旋区显著不同。在中纬度海洋锋区,海洋过程对海表面温度变化的贡献占主导地位,因而表现为海洋强迫作用,并且冬季比夏季更大。在副热带涡旋区,表面湍流热通量对海表面温度变化的作用更为显著,因而表现为大气强迫作用,并且夏季比冬季更为明显。在阿拉伯海西部地区,夏季海洋过程对海表面温度变化影响明显,表现出海洋强迫作用,而冬季以表面湍流热通量影响为主,表现为大气强迫情况。在孟加拉湾、南中国海和菲律宾海地区,无论冬夏季都表现为大气强迫作用。在中纬度海洋锋区冬季和阿拉伯海西部地区夏季,海洋强迫随时间尺度增长而增强,而在其它地区和季节,存在由较短时间尺度的大气强迫为主向较长时间尺度的海洋强迫变得重要的转换,转换的时间尺度大约在2.~40天。在中纬度海洋锋区,海洋强迫作用随空间尺度增大而减弱,并向大气强迫情况转换,转换的空间尺度夏季比冬季小。一般而言,大气强迫作用随空间尺度增大而增强。

关键词：表面湍流热通量海表面温度海气变化关系季节变化时间—空间尺度依赖性

Effects of igneous bodies on modification of modern slope morphology: Insights from the continental slope offshore Dongsha Islands, south china {2.

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Acta Oceanologica Sinica 2019年第5期38卷 109-117页

作者： Chao Liang Xinong Xie Hua Wang Guangjian Zhong Entao liu ming {2. Hai Yi Chun{3. Qin Haiyang Cao Jie He Yanpu Zhao College of Marine Science and Technology China University of GeosciencesWuhan Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education China University of GeosciencesWuhan Faculty of Earth Resources China University of GeosciencesWuhan Guangzhou Marine Geological Survey China Geological Survey institute of Sedimentary Geology Chengdu University of Technology

A statistical analysis for the morphological parameters extracted from numerous seismic profiles, and a highresolution seismic study of the southeastern slope of the Dongsha Islands(south{2. {3.) with water depth between approximately 500 and 3.100 m, has revealed the variation of morphological features due to the intrusion of igneous bodies and associated sedimentary processes. Three types of the continental slope are distinguished:(1) a rough and steep slope with multiple igneous bodies(Type 1),(2. a relatively smooth and gentle slope with the single igneous body(Type 2., and(3. a smooth and gentle slope without igneous bodies(Type 3.. These igneous bodies, formed in the post-{3.floor spreading of the south{2. {3., are often characterized by high positive seismic amplitudes, and chaotic reflections with complex shapes. The igneous bodies in Type 1 separated the slope into two or more upper sub-sags and a lower main-sag, in which the sub-sags and main-sag could be filled with sediments transported by alongslope bottom currents at the same time. Whereas, the igneous body in Type 2.just separated the slope into an upper sub-sag and a lower main-sag, in which the sediments could be transported into the lower main-sag only after the upper sub-sag has been filled up. Type 3.represents a normal slope with common clinoform progradation. The modern slope morphologies in the study area are the results of adjustments of the continental slope due to the intrusion of igneous bodies and associated sedimentary processes. The distinctions among three types of modern slope morphologies indicate different depositional conditions and adjustments of slope morphologies.

关键词： igneous bodies modern slope morphology Dongsha Islands south china sea

Low-noise,low-power-consumption seafloor vector magnetometer

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Journal of oceanology and Limnology 2023年第2期41卷 804-815页

作者： Xiaochen LI Xianhu LUO ming DENG Ning QIU Zhen sun Kai CHEN china University of Geosciences Beijing 100083China Guangzhou Marine Geological Survey China Geological SurveyMinistry of Natural ResourcesGuangzhou 511458Chinaa SCSIO Key Laboratory of Ocean and Marginal sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

The seafloor vector magnetometer is an effective tool for marine geomagnetic surveys and seafloor magnetotelluric(MT)***,the noise,power consumption,cost,and volume characteristics of existing seafloor vector magnetometers are insufficient for practical ***,a low-noise,low-power-consumption seafloor vector magnetometer that can be used for data acquisition of deep-ocean geomagnetic vector components is developed and presented.A seafloor vector magnetometer mainly consists of a fluxgate sensor,data acquisition module,acoustic release module,glass sphere,frame,burn-wire release,and anchor.A new low-noise data acquisition module and a fluxgate sensor greatly reduce power ***,compact size is achieved by integrating an acoustic telemetry module and replacing the acoustic release with an external burn-wire *** new design and magnetometer characteristics reduce the volume of the instrument and the cost of hardware considerably,thereby improving the integrity and deployment efficiency of the ***,it can operate for 90 days underwater at a maximum depth of 6000 *** seafloor vector magnetometer was tested in the south china sea and the Philippine sea and obtained high-quality geomagnetic *** deep-water environment facilitates magnetic field data measurements,and the magnetometer has an approximate noise level of 10 pT/rt(Hz)@1 Hz,a peak-to-peak value error of 0.2.nT,and approximate power consumption of 2.0 *** fluxgate sensor can measure the magnetic field in the lower frequency band and realize geomagnetic field measurements over prolonged periods.

关键词： seafloor vector magnetometer low noise low power consumption

Synergistic Contribution of Precipitation Anomalies over Northwestern India and the south china {2. to High Temperature over the Yangtze River Valley

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Advances in Atmospheric Sciences 2015年第9期32卷 1255-1265页

作者： liu Ge WU Renguang sun Shuqing WANG Huimei chinese academy of Meteorological Sciences institute of Space and Earth Information Science/Department of Geography and Resource Management/Shenzhen Research institute Chinese University of Hong Kong Center for Monsoon System Research 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

This study explores the characteristics of high temperature anomalies over eastern china and associated influencing factors using observations and model *** show that more long-duration（over 8 days） high temperature events occur over the middle and lower reaches of the Yangtze River Valley（YRV） than over the surrounding regions,and control most of the interannual variation of summer mean temperature in *** synergistic effect of summer precipitation over the south china {3.（SCS） region（18°–2.°N,115°–12.°E） and the northwestern India and Arabian {3.（IAS） region（18°–2.°N,60°–80°E） contributes more significantly to the variation of summer YRV temperature,relative to the respective SCS or IAS precipitation *** precipitation（enhanced condensational heating） over the SCS region strengthens the western Pacific subtropical high（WPSH） and simultaneously weakens the westerly trough over the east coast of Asia,and accordingly results in associated high temperature anomalies over the YRV region through stimulating an East Asia–Pacific（EAP） *** precipitation over the IAS region further adjusts the variations of the WPSH and westerly trough,and eventually reinforces high temperature anomalies over the YRV ***,the condensational heating related to more IAS precipitation can adjust upper-tropospheric easterly anomalies over the YRV region by exciting a circumglobal teleconnection,inducing cold horizontal temperature advection and related anomalous descent,which is also conducive to the YRV high temperature *** reproduction of the above association in the model results indicates that the above results can be explained both statistically and dynamically.

关键词： high temperature events Yangtze River Valley precipitation ECHAM5

P-T stability conditions of methane hydrate in sediment from south china {2.

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Journal of Natural Gas Chemistry 2011年第5期20卷 531-536页

作者： Shicai sun yuguang Ye Changling liu Fengkui Xiang Yan Ma Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation College of Civil Engineering and Architecture Shandong University of Science and Technology Qingdao 266510 Shandong China Key Laboratory of Marine Hydrocarbon Resources and Environmental Geology Ministry of Land and Resources Qingdao 266071 Shandong China Qingdao institute of Marine Geology Qingdao 266071 Shandong China

For reasonable assessment and safe exploitation of marine gas hydrate resource, it is important to determine the stability conditions of gas hydrates in marine sediment. In this paper, the seafloor water sample and sediment sample （saturated with pore water） from Shenhu Area of {2.{3. sea were used to synthesize methane hydrates, and the stability conditions of methane hydrates were investigated by multi-step heating dissociation method. Preliminary experimental results show that the dissociation temperature of methane hydrate both in seafloor water and marine sediment, under any given pressure, is depressed by approximately -1.4 K relative to the pure water system. This phenomenon indicates that hydrate stability in marine sediment is mainly affected by pore water ions.

关键词： sediment from south china {2. seafloor water methane hydrate stability condition

Phytoplankton growth and microzooplankton grazing in the central and northern south china {2. in the spring intermonsoon {2.son of 2.17

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Acta Oceanologica Sinica 2020年第6期39卷 84-95页

作者： Dawei Chen Congcong Guo Linhui yu yuanzhen Lu Jun sun Tianjin Key Laboratory of Marine Resources and Chemistry Tianjin University of Science and TechnologyTianjin 300457China Research Centre for Indian Ocean Ecosystem Tianjin University of Science and TechnologyTianjin 300457China State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China

Phytoplankton growth rates and mortality rates were experimentally examined at 2. stations during the 2.17 spring intermonsoon(April to early May)in the northern and central south{3. {2.(SCS)using the dilution technique,with emphasis on a comparison between the northern and central SCS areas which had different environmental *** had been higher temperature but lower nutrients and chlorophyll a concentrations in the central SCS than those in the northern *** mean rates of phytoplankton growth(μ0)and microzooplankton grazing(m)were(0.88±0.3.)d–1 and(0.55±0.2.)d–1 in the central SCS,and both higher than those in the northern SCS with the values ofμ0((0.81±0.16)d–1)and m((0.3.±0.09)d–1),*** growth and microzooplankton grazing rates were significantly coupled in both *** microzooplankton grazing impact(m/μ0)on phytoplankton was also higher in the central SCS(0.63.0.12.than that in the northern SCS(0.3.±0.06).The microzooplankton abundance was significantly correlated with temperature in the *** might more effectively promote the microzooplankton grazing rate than phytoplankton growth rate,which might contribute to higher m and m/μ0 in the central *** with temperature,nutrients mainly affected the growth rate of *** the nutrient enrichment treatment,the phytoplankton growth rate(μn)was higher thanμ0 in the central SCS,suggesting phytoplankton growth in the central SCS was nutrient *** ratio ofμ0/μn was significantly correlated with nutrients concentrations in the both areas,indicating the limitation of nutrients was related to the concentrations of background nutrients in the study stations.

关键词： dilution technique phytoplankton growth microzooplankton grazing south china {2. spring intermonsoon season

Exotic origin of the chinese continental shelf: new insights into the tectonic evolution of the western Pacific and eastern china since the Mesozoic

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Science Bulletin 2015年第18期60卷 1598-1616页

作者： Yaoling Niu Yi liu Qiqi Xue Fengli Shao Shuo Chen Meng Duan Pengyuan Guo Hongmei Gong Yan Hu Zhenxing Hu Juanjuan Kong Jiyong Li Jinju liu Pu {{3. Wenli {{3. Lei Ye yuanyuan Xiao yu Zhang institute of oceanology Chinese Academy of Sciences Department of Earth Sciences Durham University School of Earth Science and Resources China University of Geosciences institute of Deep sea Science and Engineering Chinese Academy of Sciences School of Earth Sciences Lanzhou University

The effect of paleo-Pacific subduction on the geological evolution of the western Pacific and continental china is likely complex. Nevertheless, our analysis of the distribution of Mesozoic granitoids in the eastern continental china in space and time has led us to an interesting conclusion： The basement of the continental shelf beneath East and {2. china seas may actually be of exotic origin geologically unrelated to the continental lithosphere of eastern china. By accepting the notion that the Jurassic- Cretaceous granitoids in the region are genetically associated with western Pacific subduction and the concept that subduction may cease to continue only if the trench is being jammed, then the termination of the granitoid magmatism throughout the vast region at -88±2.Ma manifests the likelihood of ＂sudden＂, or shortly beforehand （- 100 Ma）, trench jam of the Mesozoic western Pacific subduction. Trench jam happens if the incoming ＂plate＂ or portion of the plate contains a sizeable mass that is too buoyant to subduct. The best candidate for such a buoyant and unsubductable mass is either an oceanic plateau or a micro-continent. We hypothesize that the basement of the chinese continental shelf represents such an exotic, buoyant and unsubductable mass, rather than seaward extension of the continental lithosphere of eastern china. The locus of the jammed trench （i.e., the suture） is predictably located on the shelf in the vicinity of, and parallel to, the arc-curved coastal line of the {2.east continental china. It is not straightforward to locate the locus in the northern section of the East china sea shelf because of the more recent （〈2. Ma） tectonic re-organization associated with the opening of the sea of Japan. We predict that the trench jam at - 100 Ma led to the re-orientation of the Pacific plate motion in the course of NNW direction as inferred from the age-progressive Emperor seamount Chain of Hawaiian hotspot origin （its oldest unsubdued Meiji and Detroi

关键词： Mesozoic granitoids in eastern chinaExotic origin of chinese continental shelf Trenchjam Transform plate boundary Basal hydrationweakening Lithosphere thinning Cratondestruction Mantle hydrous melting Crustalmelting Plate tectonics south china {2.