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1.
The Current System in the Yellow and East China Seas 总被引：18，自引：1，他引：18
During the 1990s, our knowledge and understanding of the current system in the Yellow and East China Seas have grown significantly
due primarily to new technologies for measuring surface currents and making high-resolution three-dimensional numerical model
calculations. One of the most important new findings in this decade is direct evidence of the northward current west of Kyushu
provided by satellite-tracked surface drifters. In the East China Sea shelf region, these recent studies indicate that in
winter the Tsushima Warm Current has a single source, the Kuroshio Branch Current in the west of Kyushu, which transports
a mixture of Kuroshio Water and Changjiang River Diluted Water northward. In summer the surface Tsushima Warm Current has
multiple sources, i.e., the Taiwan Warm Current, the Kuroshio Branch Current to the north of Taiwan, and the Kuroshio Branch
Current west of Kyushu. The summer surface circulation pattern in the East China Sea shelf region changes year-to-year corresponding
to interannual variations in Changjiang River discharge. Questions concerning the Yellow Sea Warm Current, the Chinese Coastal
Current in the Yellow Sea, the current field southwest of Kyushu, and the deep circulation in the Okinawa Trough remain to
be addressed in the next decade.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
2.
Heung-Jae Lie Cheol-Ho Cho Jae-Hak Lee Suk Lee Yuxiang Tang 《Journal of Oceanography》2000,56(2):197-211
The Cheju Warm Current has been defined as a mean current that rounds Cheju-do clockwise, transporting warm and saline water to the western coastal area of Cheju-do and into the Cheju Strait in the northern East China Sea (Lie et al., 1998). Seasonal variation of the Cheju Warm Current and its relevant hydrographic structures were examined by analyzing CTD data and trajectories of satellite-tracked drifters. Analysis of a combined data set of CTD and drifters confirms the year-round existence of the Cheju Warm Current west of Cheju-do and in the Cheju Strait, with current speeds of 5 to 40 cm/s. Saline waters transported by the Cheju Warm Current are classified Cheju Warm Current water for water of salinity greater than 34.0 psu and modified Cheju Warm Current for water having salinity of 33.5–34.0 psu. In winter, Cheju Warm Current water appears in a relatively large area west of Cheju-do, bounded by a strong thermohaline front formed in a "" shape. In summer and autumn, the Cheju Warm Current water appears only in the lower layer, retreating to the western coastal area of Cheju-do in summer and to the eastern coastal area sometimes in autumn. The Cheju Warm Current is found to flow in the western channel of the Korea/Tsushima Strait after passing through the Cheju Strait, contributing significantly to the Tsushima Warm Current. 相似文献
3.
夏季台湾海峡水及黑潮次表层涌升水向东海近陆架区营养盐输送通量的估算 总被引：2，自引：1，他引：1
According to historical mean ocean current data through the field observations of the Taiwan Ocean Research Institute during 1991–2005 and survey data of nutrients on the continental shelf of the East China Sea(ECS) in the summer of 2006, nutrient fluxes from the Taiwan Strait and Kuroshio subsurface waters are estimated using a grid interpolation method, which both are the sources of the Taiwan Warm Current. The nutrient fluxes of the two water masses are also compared. The results show that phosphate(PO4-P), silicate(SiO3-Si) and nitrate(NO3-N) fluxes to the ECS continental shelf from the Kuroshio upwelling water are slightly higher than those from the Taiwan Strait water in the summer of 2006. In contrast, owing to its lower velocity, the nutrient flux density(i.e., nutrient fluxes divided by the area of the specific section) of the Kuroshio subsurface water is lower than that of the Taiwan Strait water. In addition, the Taiwan Warm Current deep water, which is mainly constituted by the Kuroshio subsurface water, might directly reach the areas of high-frequency harmful alga blooms in the ECS. 相似文献
4.
Three warm currents, the Kuroshio, its shelf intrusion branch in the northeast of Taiwan and the Taiwan Warm Current (hereafter TWC), dominate the circulation pattern in the East China Sea (hereafter ECS). Their origination, routes and variation in winter and summer are studied. Their relationship with four major high and low temperature centers is analyzed. Differing from the previous opinion, we suggest that the four major centers are generated to a great extent by the interaction of the currents in the ECS. In summer, a cold water belt in the northeast of Taiwan is preserved from winter between the Kuroshio and the TWC. The shelf intrusion branch of the Kuroshio separates the water belt, and two low temperature centers generate in the northeast of Taiwan. In the southern ECS, the TWC transports more heat flux northward to form a warm pool. But it is separated in the lower layer by the cold water driven by the intrusion branch of the Kuroshio. So the TWC and the intrusion branch of the Kuroshio play a dominating role to generate the high temperature center. The interaction among the eastward TWC, the northward Tsushima Warm Current (hereafter TSWC) and the southward Su Bei Coastal Flow (hereafter SBCF) generates the low temperature center in the northern ECS. In winter, the strengthening of the shelf intrusion branch of the Kuroshio obscures the two low temperature centers in the northeast of Taiwan. For the weakening of the TWC, the high temperature center in the southern ECS vanishes, and the low temperature center in the northern ECS shifts to south. 相似文献
5.
Atsuhiko Isobe 《Journal of Oceanography》1999,55(2):185-195
Using a temperature data set from 1961 to 1990, we estimated the monthly distribution of the vertically integrated heat content
in the East China Sea. We then drew the monthly map of the horizontal heat transport, which is obtained as the difference
between the vertically integrated heat content and the surface heat flux. We anticipate that its distribution pattern is determined
mainly due to the advection by the ocean current if it exists stably in the East China Sea. The monthly map of the horizontal
heat transport showed the existence of the Taiwan-Tsushima Warm Current System (TTWCS) at least from April to August. The
T-S (temperature-salinity) analysis along the path of TTWCS indicated that the TTWCS changes its T-S property as it flows
in the East China Sea forming the Tsushima Warm Current water. The end members of the Tsushima Warm Current water detected
in this study are water masses in the Taiwan Strait and the Kuroshio surface layer, the fresh water from the mainland of China,
and the southern tip of the Yellow Sea Cold Water extending in the northern part of the East China Sea.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
6.
By using Acoustic Doppler Current Profiler (ADCP) measurements with the four round-trips method to remove diurnal/semidiurnal
tidal currents, the detailed current structure and volume transport of the Tsushima Warm Current (TWC) along the northwestern
Japanese coast in the northeastern Japan Sea were examined in the period September–October 2000. The volume transport of the
First Branch of the TWC (FBTWC) east of the Noto Peninsula was estimated as approximately 1.0 Sv (106 m3/s), and the FBTWC continued to flow along the Honshu Island to the south of the Oga Peninsula. To the north of the Oga Peninsula,
the Second Branch of Tsushima Warm Current and the eastward current established by the subarctic front were recombined with
the FBTWC and the total volume transport increased to 1.9 Sv. The water properties at each ADCP line strongly suggested that
most of the upper portion of the TWC with high temperature and low salinity flowed out to the North Pacific as the Tsugaru
Warm Current. In the north of the Tsugaru Strait, the volume transport of the northward current was observed to be as almost
1 Sv. However, the component of the TWC water was small (approximately 0.3 Sv). 相似文献
7.
A Review on the Currents in the South China Sea: Seasonal Circulation, South China Sea Warm Current and Kuroshio Intrusion 总被引：47，自引：4，他引：43
Researches on the currents in the South China Sea (SCS) and the interaction between the SCS and its adjacent seas are reviewed. Overall seasonal circulation in the SCS is cyclonic in winter and anticyclonic in summer with a few stable eddies. The seasonal circulation is mostly driven by monsoon winds, and is related to water exchange between the SCS and the East China Sea through the Taiwan Strait, and between the SCS and the Kuroshio through the Luzon Strait. Seasonal characteristics of the South China Sea Warm Current in the northern SCS and the Kuroshio intrusion to the SCS are summarized in terms of the interaction between the SCS and its adjacent seas. 相似文献
8.
东海西部陆架海域水团的季节特征分析 总被引：3，自引：1，他引：2
On the basis of the CTD data and the modeling results in the winter and summer of 2009, the seasonal characteristics of the water masses in the western East China Sea shelf area were analyzed using a cluster analysis method. The results show that the distributions and temperature-salinity characteristics of the water masses in the study area are of distinct seasonal difference. In the western East China Sea shelf area, there are three water masses during winter, i.e., continental coastal water（CCW）, Taiwan Warm Current surface water（TWCSW） and Yellow Sea mixing water（YSMW）, but four ones during summer, i.e., the CCW, the TWCSW, Taiwan Warm Current deep water（TWCDW） and the YSMW. Of all, the CCW, the TWCSW and the TWCDW are all dominant water masses. The CCW, primarily characterized by a low salinity, has lower temperature, higher salinity and smaller spatial extent in winter than in summer. The TWCSW is warmer, fresher and smaller in summer than in winter, and it originates mostly from the Kuroshio surface water（KSW） northeast of Taiwan, China and less from the Taiwan Strait water during winter, but it consists of the strait water and the KSW during summer. The TWCDW is characterized by a low temperature and a high salinity, and originates completely in the Kuroshio subsurface water northeast of Taiwan. 相似文献
9.
Variability of the Kuroshio in the East China Sea in 1993 and 1994 总被引：11，自引：1，他引：10
INTRODUCTIONTherearemanyworksabouttheKuroshioVTintheEastChinaSeaanditsseasonalvariabil*ThisprojectwassupportedbytheNationalNaturalScienceFoundationofChinaundercontractNo.49776287.1.SecondinstituteofOceanography,StateOceanicAdministration,Hangzhou310012,Chinaity(Guan,1988;Nishizawaetal.,1982;SunandKaneko,1993;Yuanetal.,1990,1993,1994,1995).Thecomputationmethodusedtobethedynamicmethod(Guan,1988;Nishizawaetal.,1982;SunandKaneko,1993),butrecentlytheinverseandthemodifiedinversemetho… 相似文献
10.
通过对南海东北部及台湾海峡邻近海域环流产生影响的各个动力因子进行量级分析,在Hurlburt等人数值模式的基础上,建立起分区性的正压、斜压耦合模式,以便能反映大陆架、大陆坡变化剧烈的底形效应对边缘海环流的影响。将该模式用于南海东北部及台湾海峡附近环流的数值研究。初步的试验计算结果表明,耦合模式能克服两层模式易发生"交面"和"交底"等现象的缺点,同时能反映斜压效应及底形效应的影响,使模拟的计算结果更切合实际,即：（1）黑潮通过巴士海峡侵入南海海域,并导致东沙群岛附近终年存在一个气旋涡;（2）台湾海峡西南海域的大陆架－大陆坡底形效应十分重要;（3）海水在台湾海峡的流动基本上为N向流动,流量约为2×10~6m~3·s-1;（4）模式中有类似于南海暖流的海流出现。 相似文献