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Progress in Chinese research on water masses and circulation in the Arctic and subarctic ocean 被引量:2
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作者 CAO Yong ZHAO Jinping SHAO Qiuli 《Advances in Polar Science》 2017年第2期91-99,共9页
The Arctic Ocean and Arctic sea ice have undergone a series of rapid changes. Oceanographic surveying has become one of the key missions of the Chinese National Arctic Research Expeditions since 1999. Using the data o... The Arctic Ocean and Arctic sea ice have undergone a series of rapid changes. Oceanographic surveying has become one of the key missions of the Chinese National Arctic Research Expeditions since 1999. Using the data obtained in these surveys and from other sources, Chinese researchers have carried out a series of studies in the field of Arctic physical oceanography. The Near Sea-surface Temperature Maximum, freshwater content and heat flux in different regions of the Arctic have drawn wide attention from Chinese researchers. Arctic circulation is changing with the decline of sea ice, which is also influencing the structure and distribution of water masses. Studies have also focused on these issues. In this paper, the main results of research on water masses, currents, the structure of the upper ocean and other major hydrological phenomena over the past two decades are summarized. 展开更多
关键词 Arctic ocean physical oceanography upper ocean water mass CURRENT
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WATER MASS FORMATION IN THE SOUTH INDIAN OCEAN BY AIR-SEA FLUXES
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作者 MingFeng 《热带海洋学报》 CAS CSCD 北大核心 2004年第6期16-21,共6页
Indian Central Water (ICW) and Subantarctic Mode Water (SAMW) formation rates are estimated from two air-sea flux products, the Comprehensive Ocean-Atmosphere Data Set (COADS) and the Southampton Oceanography Ce... Indian Central Water (ICW) and Subantarctic Mode Water (SAMW) formation rates are estimated from two air-sea flux products, the Comprehensive Ocean-Atmosphere Data Set (COADS) and the Southampton Oceanography Centre (SOC) climatology. The ICW formation is estimated to be 8 Sv (1 Sv = 106m3·s-1 ) from both products, with more contributions from freshwater flux. From the COADS product, the SAMW formation rate is estimated to be 31 Sv in the potential density range of 26.5-26.9σθ, with also a significant contribution from freshwater flux. However, the SAMW formation rate estimated from the SOC product is much smaller, which may be due to bias of the SOC heat flux. Poorer quality of the flux products in the Southern Ocean may also contribute to the difference. 展开更多
关键词 INDIAN ocean AIR-SEA HEAT FLUX water mass formation
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Water mass of the northward throughflow in the Bering Strait in the summer of 2003 被引量:10
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作者 ZHAO Jinping SHI Jiuxin +2 位作者 GAO Guoping JIAO Yutian ZHANG Hongxin 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2006年第2期25-32,共8页
The temperature and salinity data obtained by the Chinese national arctic research expedition (CHINARE2003) are used to study the water structure in the Bering Strait and ambient regions. Four water masses appeared ... The temperature and salinity data obtained by the Chinese national arctic research expedition (CHINARE2003) are used to study the water structure in the Bering Strait and ambient regions. Four water masses appeared in the research region: the intermediate Bering Sea water mass (IBWM), the Alaska coastal water (ACW), the Anadyr water (AW) and the Bering shelf water (BSW). The AW originates from the IBWM, but the upper layer water has been greatly altered. In the cruise on 28/29 July 2003, there were only the BSW and ACW in a section across the Bering Strait (BS section), but in the September 12/13 cruise, the AW, BSW and ACW flowed parallelly into the Bering Strait. The upper waters of these water masses were all altered due to ice melting, runoff, solar radiation, and wind mixing. The waters in the central and northern parts of Bering Strait stratified by two uniform layers,were expressed as the typical feature of the water masses originating from the pacific. A two-layer structure also dominated the vertical stratification in most part of the Chukchi Sea. An obvious subseasonal variation was observed in the BS section, which caused varying transportation of fresh water, heat, and substance, and produced a long-term and extensive impact on the Arctic Ocean. 展开更多
关键词 Bering Strait water mass Pacific water Arctic ocean CHINARE2003
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Distribution of Pacific-origin water in the region of the Chukchi Plateau in the Arctic Ocean in the summer of 2003 被引量:16
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作者 SHI Jiuxin CAO Yong +3 位作者 ZHAO Jinping GAO Guoping JIAO Yutian LI Shujiang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2005年第6期12-24,共13页
The upper ocean thermohaline structures in the region of the Chukchi Plateauare analyzed with the hydrographic data collected by the Chinese National Arctic Research Expeditionin the summer of 2003. Three types of the... The upper ocean thermohaline structures in the region of the Chukchi Plateauare analyzed with the hydrographic data collected by the Chinese National Arctic Research Expeditionin the summer of 2003. Three types of the Pacific-origin water were found in the upper ocean,Alaska Coastal Water (ACW), summer Bering Sea Water (sBSW) and winter Bering Sea Water (wBSW) areindicated by two maximums temperature and one minimum temperature, piling up from the upper to thelower respectively. The extreme warm ACW with a maximum temperature of 1.62℃ was found in thesouthwestern Canada Basin at a depth of about 50 m. A pathway of the ACW into the basin from itsadjacent area did not existed in the expedition period. So it is speculated that the extreme warmfeature of the ACW was formed locally in 2003. The relative weak ACW occurred to the east of theChukchi Cap and in the southern Chukchi Abyssal Plain. The latter one might originate from a warmdownwelling that existed in a small canyon at the shelf break of the Chukchi Sea. The sBSW withoutthe ACW was found only at the southwestern flank of the Chukchi Cap. The ACW and the sBSW were notfound in the northernmost station at 81°N,which indicates the north boundary of the upperPacific-origin water in the Canada Basin. The wBSW, which existed in all deep stations, was exactlyuniform at temperature. The difference of the core potential temperature of the wBSW in the deepregions is only 0.08℃. 展开更多
关键词 alaska coastal water bering sea water water mass arctic ocean
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Features and spatial distribution of circumpolar deep water in the southern Indian Ocean and the effects of Antarctic circum polar current 被引量:1
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作者 蒲书箴 董兆乾 +2 位作者 于卫东 卢燕 项宝强 《Chinese Journal of Polar Science》 2007年第2期100-109,共10页
The data from the Southern Ocean observations of World Ocean Circulation Experiment (WOCE) are used for analysis and illustration of the features and spatial distributions of Circumpolar Deep Water (CDW) in the so... The data from the Southern Ocean observations of World Ocean Circulation Experiment (WOCE) are used for analysis and illustration of the features and spatial distributions of Circumpolar Deep Water (CDW) in the southern Indian Ocean. It is learnt from the comparison among the vertical distributions of temperature/ salinity/oxygen along the 30°E, 90°E and 145°E sections respectively that some different features of CDW and the fronts can be found at those longitudes, and those differences can be attributed to the zonal transoceanic flow and the merizonal movement in the Circumpolar Deep Water. In fact, the zonal transoceanic flow is the main dynamic factor for the water exchange between the Pacific Ocean and the /ndian Ocean or between the Atlantic Ocean and the Indian Ocean, and for the effects on the spatial distributions of the physical properties in CDW. 展开更多
关键词 Southern Indian ocean Circumpolar Deep water water mass properties spatial distributions.
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Responses of the circulation and water mass in the Beibu Gulf to the seasonal forcing regimes 被引量:8
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作者 GAO Jingsong SHI Maochong +2 位作者 CHEN Bo GUO Peifang ZHAO Dongliang 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2014年第7期1-11,共11页
In the past 20 a, the gulf-scale circulation in the Beibu Gulf has been commonly accepted to be driven by a wind stress or density gradient. However, using three sensitive experiments based on a three-dimensional baro... In the past 20 a, the gulf-scale circulation in the Beibu Gulf has been commonly accepted to be driven by a wind stress or density gradient. However, using three sensitive experiments based on a three-dimensional baroclinic model that was verified by observations, the formation mechanisms were revealed: the circula- tion in the northern Beibu Gulf was triggered by the monsoon wind throughout a year; whereas the southern gulf circulation was driven by the monsoon wind and South China Sea (SCS) circulation in winter and sum- mer, respectively. The force of heat flux and tidal harmonics had a strong effect on the circulation strength and range, as well as the local circulation structures, but these factors did not influence the major circulation structure in the Beibu Gulf. On the other hand, the Beibu Gulf Cold Water Mass (BGCWM) would disappear without the force of heat flux because the seasonal thermocline layer was generated by the input of heat so that the vertical mixing between the upper hot water and lower cold water was blocked. In addition, the wind-induced cyclonic gyre in the northern gulf was favorable to the existence of the BGCWM. However, the coverage area of the BGCWM was increased slightly without the force of the tidal harmonics. When the model was driven by the monthly averaged surface forcing, the circulation structure was changed to some extent, and the coverage area of the BGCWM almost extended outwards 100%, implying the circulation and water mass in the Beibu Gulf had strong responses to the temporal resolution of the surface forces. 展开更多
关键词 Princeton ocean model (POM) Beibu Gulf (Gulf of Tonkin) CIRCULATION cold water mass response
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Features of physical oceanography in the oceans near the Prydz Bay during the 1998/1999 austral summer 被引量:5
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作者 PU Shuzhen HU Xiaomin +2 位作者 DONG Zhaoqian XIANG Baoqiang YU Weidong 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2006年第6期1-14,共14页
Thermohaline features, spatial extensions, and depths of the antarctic circumpolar deep water, the antarctic bottom water, and the upper layer water near the Prydz Bay ( including the Prydz Bay s.mmer surface water, ... Thermohaline features, spatial extensions, and depths of the antarctic circumpolar deep water, the antarctic bottom water, and the upper layer water near the Prydz Bay ( including the Prydz Bay s.mmer surface water, the antarctic winter water, and the Prydz Bay shelf water ) are analyzed and studied by use of the full depth CTD data obtained in the Southern Ocean near the Prydz Bay during the 1998/1999 austral summer. The northward extension of the shelf water, the thickness of the temperature inversion layer, the minima in the vertical temperature profile and the vertical temperature gradient are interpreted. On the basis of analysis of gravitational potential field, the geostrophic current and the geostrophic volume transport are calculated to determine the location of the strongest current in the zonal circulation near the Prydz Bay and to find the spatial variability of the volume transport in the64° -66.5°S zone. In addition, the central location, the frontal strength, the vertical depth and thickness of the continental water boundary (CWB) are estimated from the CTD data to expound the spatial variability of CWB in the study area (64° -66.5°S, 70° -75°E). 展开更多
关键词 CIRCULATION FRONT Prydz Bay Southern ocean water masses
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Progress of Chinese research in physical oceanography of the Southern Ocean 被引量:7
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作者 SHI Jiuxin DONG Zhaoqian CHEN Hongxia 《Advances in Polar Science》 2013年第2期86-97,共12页
Oceanographic surveying has been one of the key missions of the Chinese National Antarctic Research Expedition since 1984. Using the field data obtained in these surveys and the results from remote sensing and numeric... Oceanographic surveying has been one of the key missions of the Chinese National Antarctic Research Expedition since 1984. Using the field data obtained in these surveys and the results from remote sensing and numerical models, Chinese physical oceanographers have investigated the water masses, fronts and circulation patterns in the Southern Ocean. The results of nearly 30 years of research are summarized in this paper. Most oceanographic observations by Chinese researchers have been con- ducted in Prydz Bay and the adjacent seas. CTD (Conductivity Temperature and Depth) data, collected during the past 20 years, have been applied to study several features of the water masses in this region: The spatial variation of warm summer surface water, the northward extension of shelf water, the flow of ice shelf water from the cavity beneath the Amery Ice Shelf, the upweUing of the Circumpolar Deep Water, and the formation of the Antarctic Bottom Water. The circulation and its dynamic factors have been analyzed with dynamic heights calculated from CTD data as well as by numerical models. The structure and strength of the fronts in the southeast Indian Ocean and the Drake Passage were investigated with underway XBT/XCTD (Expendable Bathythermo- graph/Expendable CTD) and ADCP (Acoustic Doppler Current Profiler) data. Their interaunual variations have been determined and the factors of influence, especially the atmospheric forcing and mesoscale oceanic processes, were studied using remote sens- ing data. The dynamic mechanism of the Antarctic Circumpolar Current (ACC) was analyzed by theoretical models. The transport and pattern of the ACC have been well reproduced by coupled sea ice-ocean models. Additional details of ACC variability were identified based on satellite altimeter data. The response of the ACC to climate change was studied using reanalysis data. Prospects for future research are presented at the end of this paper. 展开更多
关键词 water mass CIRCULATION FRONT Southern ocean Chinese research
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A harmonic analyzed parameterization of tide-induced mixing for ocean models 被引量:2
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作者 WEI Zexun SUN Junchuan +4 位作者 TENG Fei XU Tengfei WANG Yonggang XU Xiaoqing FANG Guohong 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2018年第7期1-7,共7页
The tide-induced mixing plays an important role in the regulation of ocean circulation.Numerical simulation of continental shelf circulation is found to exhibit an unreasonable vertical thermohaline structure without ... The tide-induced mixing plays an important role in the regulation of ocean circulation.Numerical simulation of continental shelf circulation is found to exhibit an unreasonable vertical thermohaline structure without consideration of tide effects.In this study,we establish a harmonic analyzed parameterization of tide-induced(HAT) mixing,by which means to derive time-depended function of mixing coefficient based on harmonic analysis of the vertical mixing coefficient.By employing HAT mixing parameterization scheme,a series of numerical experiments are conducted for the Yellow Sea.Numerical results show that an ocean circulation model with the HAT mixing involved is capable of reproducing the reasonable thermohaline structure of the Yellow Sea Cold Water Mass,similar to structures produced by explicit tidal forcing on the open boundary.The advantage of the HAT method is its faster computation time,compared with models that directly resolve explicit tidal motion.The HAT parameterization for the tide-induced mixing has potential to improve both the accuracy and efficiency of ocean circulation and climate models. 展开更多
关键词 tide-induced mixing harmonic analysis PARAMETERIZATION ocean circulation models Yellow Sea Cold water mass
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南太平洋富稀土海区海水中的溶解态稀土元素空间分布特征研究 被引量:3
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作者 刘洪娜 李力 +3 位作者 任艺君 王小静 刘季花 石学法 《海洋学报》 CAS CSCD 北大核心 2023年第1期1-12,共12页
深海富稀土沉积物因其资源潜力巨大,近年来备受关注。一般认为,沉积物中稀土元素和钇(总称REY)的主要来源为上覆海水,但针对富稀土海区上覆海水中REY的研究较少。本研究针对南太平洋富稀土海区采集的3个站位的全水深海水样品,测试出了1... 深海富稀土沉积物因其资源潜力巨大,近年来备受关注。一般认为,沉积物中稀土元素和钇(总称REY)的主要来源为上覆海水,但针对富稀土海区上覆海水中REY的研究较少。本研究针对南太平洋富稀土海区采集的3个站位的全水深海水样品,测试出了15种溶解态REY,并对比了邻近海域已发表的数据,分析了该海区REY的空间分布特征。研究区表层水中溶解态REY浓度主要受风尘输入影响,而中层和深层水体中溶解态REY浓度主要受水团控制。经过澳大利亚后太古代页岩(PAAS)和北太平洋深层水(NPDW)归一化后的配分模式可确定REY间的分馏特征,分辨出不同水团。与其他大洋中报道的REY数据比较发现,表层水中REY浓度受风尘和河流输入影响导致差别较大,中层水中REY浓度与印度洋较为接近,深层水中REY浓度与不同大洋的水团年龄表现为正相关趋势,即REY浓度由小到大依次为大西洋、印度洋、南太平洋、北太平洋。 展开更多
关键词 海水 稀土元素 源汇过程 水团运输 南太平洋
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由GRACE RL05数据反演近10年中国大陆水储量及海水质量变化 被引量:30
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作者 卢飞 游为 +1 位作者 范东明 黄强 《测绘学报》 EI CSCD 北大核心 2015年第2期160-167,共8页
利用CSR(Center for Space Research)提供的GRACE RL05数据反演2003—2012年中国大陆水储量及其周边海域海水质量变化趋势。采用改进去相关滤波算法,使拟合最高阶次位系数为55及数据系列两端球谐位系数无须作为滑动窗口中心可直接拟合,... 利用CSR(Center for Space Research)提供的GRACE RL05数据反演2003—2012年中国大陆水储量及其周边海域海水质量变化趋势。采用改进去相关滤波算法,使拟合最高阶次位系数为55及数据系列两端球谐位系数无须作为滑动窗口中心可直接拟合,去条带效果相比传统方法更明显。结果表明,中国陆地水储量在华北平原、三峡地区及青海、新疆、西藏交界地区变化较大。十年间,华北平原地下水以4.1±1.3mm/a速度减少,陆地水和地表水变化主要集中在2004—2008年;三峡水库3次蓄水引起地区等效水高变化分别为52mm、18mm及7mm;青海、西藏、新疆3省区交界地区地表水变化引起陆地水、地下水分别以10.6±0.9mm/a及11.6±1.0mm/a的速度增加。扣除冰川均衡调整后,GRACE反演海水质量的变化结果显示,东海、南海、黄海海水质量分别以4.23±0.9mm/a、1.33±0.9mm/a及3.09±1.1mm/a的速度上升,东海海水质量在长江入口附近上升速度最快。 展开更多
关键词 GRACE 去相关滤波 陆地水 地下水 海水质量变化
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研究海水温盐结构的反射地震方法 被引量:4
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作者 郑红波 阎贫 +3 位作者 王彦林 张辉 吕修亚 邢玉清 《热带海洋学报》 CAS CSCD 北大核心 2009年第1期48-55,共8页
在物理海洋学的研究中,利用CTD(Conductivity,Temperature and Depth sensors)测量方法研究海水温盐结构存在着获取数据时间长、数据横向精度低的缺点,而利用反射地震记录可以获得剖面上连续的水体温盐结构,弥补了传统方法的不足。反射... 在物理海洋学的研究中,利用CTD(Conductivity,Temperature and Depth sensors)测量方法研究海水温盐结构存在着获取数据时间长、数据横向精度低的缺点,而利用反射地震记录可以获得剖面上连续的水体温盐结构,弥补了传统方法的不足。反射地震方法研究海水温盐结构是个新的交叉学科方法,称为"地震海洋学"。由于海水水体的物性变化比地层物性变化小得多,造成海水水体的反射地震资料信噪比很低,各类干扰强烈,因而海水水体的反射地震资料处理也和常规地震资料处理方法有所不同。它处理的重点是振幅补偿,叠前去噪以及叠后处理。笔者通过对"十五"973项目在南海东北部采集的一条高分辨率多道反射地震测线的海水水体部分的地震数据进行处理,压制了强线性干扰波,获得了水体反射图像。地震叠加速度分析获取的3个CDP(Common Depth Point)的垂向速度从1540 m.s-1单调减小到1478 m.s-1,与CTD测量得到的速度变化趋势一致。 展开更多
关键词 海水水体 反射地震 线性干扰 去噪
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2003年夏季东南印度洋上层海洋的水文特征 被引量:6
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作者 贺志刚 董兆乾 胡建宇 《极地研究》 CAS CSCD 2003年第3期195-206,共12页
本文利用 2 0 0 3年 2月我国第 1 9次南极考察队在南极普里兹湾到澳大利亚弗里曼特尔南印度洋断面上获得的XBT和XCTD数据 ,分析了该断面上层的水团分布和锋面的特征 ,并讨论了极锋以南表层的淡水输入和热量输入与海冰、降水及平流之间... 本文利用 2 0 0 3年 2月我国第 1 9次南极考察队在南极普里兹湾到澳大利亚弗里曼特尔南印度洋断面上获得的XBT和XCTD数据 ,分析了该断面上层的水团分布和锋面的特征 ,并讨论了极锋以南表层的淡水输入和热量输入与海冰、降水及平流之间的关系。南极夏季表层水(AASSW)、亚南极表层水 (SASW)、亚热带表层水 (STSW)分布于温盐跃层之上的混合层中 ,由南向北依次分布。AASSW之下是向北延伸的温度最小值层 ,即冬季水 (WW) ,其下则是涌升的上层南极饶及深层水 (UCDW)。南侵的高温高盐的亚热带表层水 (STSW)之下是温度和盐度相对均匀的亚南极模式水 (SAMW)。本航次发现 ,在 63.5°S ,79.7°E的 60 0m以深有低盐水体 (相对其周围水体 )存在 ,核心盐度 34.5 8,位于 80 0— 90 0m水深之间。这是历次考察在该断面所不曾观测到的现象。断面上的锋面从南向北依次为南极陆坡锋 (ASF)、极锋 (PF)、亚南极锋 (SAF)和亚热带锋 (STF)。ASF位于 65°S以南的 1 0 0m以深 ,等温线和等盐线向南倾斜 ;PF位于 5 4°S ,90 .4°E ;SAF位于 45 .3°— 47.5°S ,1 0 2 .5°— 1 0 4 .4°E之间 ,深达整个测量深度 ,温度具有两个高梯度核心 ;首次在该断面观测到双STF结构 ,位于 41 .9°— 42 .6°S,1 0 6.7°— 1 0 7.3°E和 37.7°— 展开更多
关键词 印度洋 水文特征 水团 锋面 淡水输入 热量输人
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太平洋入流及其与北冰洋异常变化的联系 被引量:33
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作者 史久新 赵进平 +1 位作者 矫玉田 曲平 《极地研究》 CAS CSCD 2004年第3期253-260,共8页
太平洋水通过白令海峡进入北冰洋 ,对北冰洋的海冰、水团和环流产生重要影响。在过去的十几年中 ,北冰洋的海冰和海洋系统发生了前所未有的异常变化 ;与此同时 ,白令海峡太平洋入流水的流量和性质发生了改变 ,太平洋水在北冰洋中的运移... 太平洋水通过白令海峡进入北冰洋 ,对北冰洋的海冰、水团和环流产生重要影响。在过去的十几年中 ,北冰洋的海冰和海洋系统发生了前所未有的异常变化 ;与此同时 ,白令海峡太平洋入流水的流量和性质发生了改变 ,太平洋水在北冰洋中的运移路径和影响范围也有所不同 ,这些变化之间的关系有待于进一步的研究。本文综述了有关的研究进展 ,探讨了北冰洋异常变化与太平洋入流变化之间的可能联系。 展开更多
关键词 北冰洋 太平洋 海冰 水团 环流 运移 海洋 异常变化 改变 人流
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赤道印度洋中部断面东西水交换的季节变化及其区域差异 被引量:11
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作者 张玉红 杜岩 徐海明 《海洋学报》 CAS CSCD 北大核心 2012年第2期30-38,共9页
采用海洋再分析资料和实测资料研究了热带印度洋中部东西水交换特征。结果表明存在两个相互独立的过程,即北印度洋过程(4°~6°N)和赤道过程(2°S-2°N)。北印度洋过程受季风影响显著,11月至翌年3月冬季风期间表现出... 采用海洋再分析资料和实测资料研究了热带印度洋中部东西水交换特征。结果表明存在两个相互独立的过程,即北印度洋过程(4°~6°N)和赤道过程(2°S-2°N)。北印度洋过程受季风影响显著,11月至翌年3月冬季风期间表现出很强的低盐水向西输送,5-9月夏季风期间则为高盐水向东输送;由于冬季风期间的输送较强,年平均表现为低盐水向西输送。赤道过程分为表层过程和次表层过程。表层赤道过程受局地风场驱动,有明显的半年周期;4-5月和10-11月的东向流将赤道西印度洋的高盐水向东输送,其余月份相反;向东的输送较强,年平均表现为净高盐水向东输送。在次表层赤道过程没有明显的季节变化,海流全年一致向东,将海盆西部的高盐水向东输送。 展开更多
关键词 印度洋中部 东西水交换 北印度洋过程 赤道过程
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北极环极边界流研究及其主要科学问题 被引量:11
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作者 赵进平 史久新 《极地研究》 CAS CSCD 2004年第3期159-170,共12页
北极环极边界流是新近揭示的重要海洋现象 ,是对北冰洋海洋环流长期研究结果综合得到的概念。在本文中 ,详细介绍了北极环极边界流的主要结构和水团特征 ,论述了研究北极环极边界流的意义和前景 ,深入探讨了北极环极边界流面对的科学问... 北极环极边界流是新近揭示的重要海洋现象 ,是对北冰洋海洋环流长期研究结果综合得到的概念。在本文中 ,详细介绍了北极环极边界流的主要结构和水团特征 ,论述了研究北极环极边界流的意义和前景 ,深入探讨了北极环极边界流面对的科学问题 ,指出了解决这些问题的关键科研工作。文章指出 ,从整体上研究北极环极边界流是非常重要的 ,需要全面考察北冰洋的质量和能量平衡、深层水通风过程以及水体的混合过程。在进一步的研究工作中需要更多的有针对性的现场观测、开展多学科协作研究。数值模拟仍然是北极环极边界流的重要研究手段 ,需要改善数值模式 ,提高数值模拟的质量。 展开更多
关键词 北极 北冰洋 海洋环流 数值模式 水团 深层水 边界 多学科协作 研究结果 问题
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热带西太平洋8°N 断面上部的水团特征及其对厄尔尼诺的响应 被引量:7
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作者 李绪录 《台湾海峡》 CAS CSCD 1993年第1期41-47,共7页
西太平洋北赤道逆流槽上部水域1 000m 以浅分布4个水团:北太平洋热带表层水、北太平洋次表层水、北太平洋中层水和南极太平洋中层水,它们的交界分别位于75、200和310m 深左右。在1986~1987年的El Ni(?)o 事件前期,海区温跃层明显上移;... 西太平洋北赤道逆流槽上部水域1 000m 以浅分布4个水团:北太平洋热带表层水、北太平洋次表层水、北太平洋中层水和南极太平洋中层水,它们的交界分别位于75、200和310m 深左右。在1986~1987年的El Ni(?)o 事件前期,海区温跃层明显上移;上均匀层盐度降低约0.35,近海表面温度略有增加。在1988~1989年的反厄尔尼诺事件盛期,海区温跃层明显下移;上均匀层盐度降低约0.35,近海表面温度则略有升高。 展开更多
关键词 西太平洋 水团 厄尔尼诺 热带
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热带西太平洋165°E剖面上层水团软划分及其对埃尔尼诺和反埃尔尼诺的响应 被引量:1
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作者 杜兵 张爱军 朱振勇 《海洋通报》 CAS CSCD 北大核心 1995年第2期10-19,共10页
应用模糊聚类软划分算法,根据中美海气TOGA调查8个航次所获得的CTD资料,对热带西太平洋165°E工剖面进行了上层水团分析.分析结果表明,赤道西太平洋上层可分为4个水团,它们是赤道表层水、次表层高盐水、中层次高盐水和中层低盐水,... 应用模糊聚类软划分算法,根据中美海气TOGA调查8个航次所获得的CTD资料,对热带西太平洋165°E工剖面进行了上层水团分析.分析结果表明,赤道西太平洋上层可分为4个水团,它们是赤道表层水、次表层高盐水、中层次高盐水和中层低盐水,其中赤道表层水和次表层高盐水对ENSO事件的响应最为显著.在埃尔尼诺期间,赤道表层水的温盐值低于反埃尔尼诺的温盐值,水团盘踞空间远远大于反埃尔尼诺的空间,而次表层高盐水的温度和所占空间都低于反埃尔尼诺的相应值,这种变化是由于南赤道流加强,次表层高盐水涌升海面所造成的.此外,还对各个水团的特性、分布结构和热含量变化作了进一步探讨. 展开更多
关键词 热带西太平洋 水团软划分 埃尔尼诺 反埃尔尼诺
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基于PHC3.0数据集的北冰洋水团分析 被引量:1
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作者 袁延茂 李磊 +1 位作者 郝秀敏 冯峰云 《海洋测绘》 2011年第4期67-69,共3页
基于PHC3.0极地科学中心水文气候数据集(简称PHC3.0数据集)的温度和盐度资料,使用聚类分析和Bayes判别分析的方法,对北纬70°以北海域的水团结构进行了分析,在北冰洋区域划分出4个水团:北冰洋表层水(ASW)、大西洋中层水(AIW)、太平... 基于PHC3.0极地科学中心水文气候数据集(简称PHC3.0数据集)的温度和盐度资料,使用聚类分析和Bayes判别分析的方法,对北纬70°以北海域的水团结构进行了分析,在北冰洋区域划分出4个水团:北冰洋表层水(ASW)、大西洋中层水(AIW)、太平洋水(PW)和北冰洋深层水(ADW)。北冰洋表层水(ASW)遍布于欧亚海盆和加拿大海盆,以低温低盐为特征。大西洋中层水(AIW)位于约200~900m深度,在北冰洋环极边界流的作用下,其影响可达到加拿大海盆。太平洋水(PW)受经白令海峡进入北冰洋的海水影响,相对高温低盐,夏季时影响显著。北冰洋深层水(ADW)在海盆中相当均匀,几乎没有季节变化,盐度约在34.95psu,温度在加拿大海盆约为-0.3℃,欧亚海盆约为-0.7℃。 展开更多
关键词 北冰洋 水团 聚类分析 判别分析
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南印度洋绕极深层水的性质和空间分布以及南极绕极流的作用 被引量:2
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作者 蒲书箴 董兆乾 +2 位作者 于卫东 卢燕 项宝强 《海洋科学进展》 CAS CSCD 北大核心 2007年第1期1-8,共8页
利用世界大洋环流实验的南大洋观测温度、盐度和溶解氧资料,分析并说明了南印度洋绕极深层水的性质和空间分布特征,比较了30°E,90°E和145°E断面上温度、盐度和溶解氧的垂直分布及其异同,着重指出,在南印度洋的这3个不同... 利用世界大洋环流实验的南大洋观测温度、盐度和溶解氧资料,分析并说明了南印度洋绕极深层水的性质和空间分布特征,比较了30°E,90°E和145°E断面上温度、盐度和溶解氧的垂直分布及其异同,着重指出,在南印度洋的这3个不同经度断面上,绕极深层水和锋面的不同特征与南极绕极流越洋输运和南印度洋绕极深层水的经向运动有着密切的关系。实际上,绕极流的越洋输运是南大西洋与南印度洋之间以及南印度洋与南太平洋之间水交换的主要动力因素,对形成绕极深层水的物理性质的空间分布有着重要的作用。 展开更多
关键词 南印度洋 绕极深层水 水团性质 空间分布
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