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Autumn intensification of the Ryukyu Current during 2003-2007
2010
Science China. Earth Sciences
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Inverse calculations using data from 16 repeat hydrographic transects collected from April 2003 to June 2007 have yielded velocity structures and volume transports (VTs) of the Ryukyu Current in the region ...
The inverse calculation results show that the Ryukyu Current is dominated by a subsurface velocity core with maximum velocities from 15.1 to 80.0 cm/s, whose positions vary between 110 and 600 dbar and ...
The hydrographic data were provided by the Japan Meteorological Agency (JMA ...
doi:10.1007/s11430-010-0022-2
fatcat:pxldgq65wvetllapyd3helamyq
Transport of Oyashio Water across the Subarctic Front into the Mixed Water Region and Formation of NPIW
2003
Journal of Oceanography
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Most of the Oyashio water formed through the former process was transported southeastward through the Kuroshio Extension. ...
Oyashio water flowing into the Mixed Water Region (MWR) and the Kuroshio Extension region that forms North Pacific Intermediate Water (NPIW) has been examined, based on four Conductivity-Temperature-Depth ...
The uncertainties (±1σ) for the transports are considered by taking account of the uncertainties (±1σ) of the velocities estimated from the inverse method. ber 2000. ...
doi:10.1023/b:joce.0000009576.09079.f5
fatcat:kkhhnzbqbzbtvbv5agprhorgem
Comparison of Kuroshio surface velocities derived from satellite altimeter and drifting buoy data
1998
Journal of Oceanography
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For the Kuroshio region, most of the fluctuation components of the velocities derived from drifting buoys are found to be positive. ...
This result suggests that Eulerian mean velocities for the Kuroshio region estimated from drifting buoy data tend to be larger than actual means, due to the buoy's tendency to sample preferentially in ...
This research was financially supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Science, Sports and Culture, Japan. ...
doi:10.1007/bf02744385
fatcat:oj6xziiml5bjhgv5dts34ul6fy
The structure of the Kuroshio southwest of Kyushu: velocity, transport and potential vorticity fields
1992
Deep Sea Research Part A Oceanographic Research Papers
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The average ADCP velocity at 60 m (or 10 m over the shelf) was then used as the reference velocity to calculate the absolute geostrophic velocity through the sides of the study triangle. ...
Due to relatively poor navigation data, a simple averaging technique has been used to convert the ADCP data taken between CTD station pairs into an average absolute velocity normal to the station pair, ...
in Fig. 6 , and an anonymous reviewer who sent us a reprint of SuGi~o'ro et al. (1988). ...
doi:10.1016/0198-0149(92)90108-6
fatcat:hec54qoit5h5xbmcoyqe2pbb4m
Detecting fluctuations of the Kuroshio axis south of Japan using TOPEX/POSEIDON altimeter data
1996
Journal of Oceanography
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; for example, a fairly large meander of the Kuroshio south of Honshu is clearly detected. ...
Most locations of estimated strong eastward geostrophic velocities coincide well with locations of the Kuroshio axis determined every 15 days from in situ surface velocity measurements on various vessels ...
This research was supported in part by a Grant-in-Aid for Scientific Research and an International Cooperative Research Project, GOOS (Global Ocean Observing System), both from the Ministry of Education ...
doi:10.1007/bf02236533
fatcat:wrfvu4r3wne7daq7dhz7qhjzsi
Mean flow and variability in the Kuroshio Extension from Geosat altimetry data
1991
Journal of Geophysical Research
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Using the mean profiles from ascending and descending tracks, we derived the mean surface height field by an inverse method and obtained the absolute surface height fields for the first 2.5 years of the ...
Mean surface height profiles were estimated along individual tracks by assuming the velocity profile of the Kuroshio Extension to be Gaussian-shaped and by successively fitting this synthetic current's ...
using an inverse method. ...
doi:10.1029/91jc01834
fatcat:uuw33nyogfhbpor37ziquf2wre
Observations of Energetic High-Wavenumber Internal Waves in the Kuroshio
2004
Journal of Physical Oceanography
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Intense and spatially coherent shear layers were detected in and under the Kuroshio in an April 2000 (ASIAEX) survey in the East China Sea. ...
In addition to CTD-sonar transects, a 30-h time series of currents and shear was obtained in the core of the Kuroshio near the island of Kyushu, Japan. ...
We also thank the reviewers for their comments on the manuscript, the ASIAEX principal investigators and the Office of Naval Research. ...
doi:10.1175/1520-0485(2004)034<1495:ooehiw>2.0.co;2
fatcat:lotfpr3byreu3lr3gns3z7xeua
Temporal Variation of Kuroshio Nutrient Stream South of Japan
2018
Journal of Geophysical Research - Oceans
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Due to the modulation of the Kuroshio Extension decadal oscillation, both the eastward nitrate transport and the Kuroshio recirculation were stronger in an unstable state compared to when in a stable state ...
Historical data suggested that the interannual variations of the Kuroshio nutrient transport south of Japan were controlled by the Kuroshio large meander and the Kuroshio Extension decadal oscillation, ...
Acknowledgments This study was supported by the National Natural Science Foundation of China (41576001, 41776107, 41621064, 41476020, 41606113, and ...
doi:10.1029/2017jc013635
fatcat:7bb7pigaz5fhhof3o4rk3lzcme
Gradient field of undersea sound speed structure extracted from the GNSS-A oceanography: GNSS-A as a sensor for detecting sound speed gradient
2019
SN Applied Sciences
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(Mar Geophys Res, 2018. https ://doi.org/10.1007/s1100 1-018-9362-7) improved the accuracy of GNSS-A seafloor positioning using a method for extracting the gradient field of an undersea sound speed structure ...
determination of the location and horizontal structure of the Kuroshio flow path. ...
Colombo of the NASA Goddard Space Flight Center for providing us with the kinematic GNSS software IT (Interferometric Translocation) and the Geospatial Information Authority of Japan (GSI) for providing ...
doi:10.1007/s42452-019-0699-6
fatcat:7s2bm75fcbghfmcztq34dl3efm
Tempo‐spatial variations of the Kuroshio current in the Tokara Strait based on long‐term ferryboat ADCP data
2019
Journal of Geophysical Research - Oceans
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However, the barotropic transport component exhibits an annual cycle with a maximum in December. Empirical orthogonal function analysis of the cross-sectional velocity is performed. ...
The Kuroshio passing through the Tokara Strait exhibits a multicore velocity structure. ...
Acknowledgments The authors would like to thank the captain and crew of the Ferry Naminoue, Hiroshi Ichikawa for conducting the current monitoring program in the early stages, and Takeyoshi Nagai for the ...
doi:10.1029/2018jc014771
fatcat:eosrnol7c5henkid5feahitn4a
South China Sea Isopycnal-Surface Circulation
2000
Journal of Physical Oceanography
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This paper investigates the seasonal variabilities of the South China Sea isopycnal-surface circulations and of the Kuroshio intrusion through the Luzon Strait using the U.S. ...
Public reporting burden for the collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining ...
The authors wish to thank Chenwu Fan at the Naval Postgraduate School for computational assistance. ...
doi:10.1175/1520-0485(2000)030<2419:scsisc>2.0.co;2
fatcat:ylnaez3hjfh5pbpjdfj754wgzq
The Kuroshio East of Taiwan: Moored Transport Observations from the WOCE PCM-1 Array
2001
Journal of Physical Oceanography
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The overall mean transport for the Kuroshio is estimated to be 21.5 Sv with an uncertainty of 2.5 Sv. ...
profiles, and 3) an "adjusted geostrophic" method in which all moored temperature measurements within the array are used to estimate a relative geostrophic velocity field that is referenced and adjusted ...
Funding for the collection and analysis of this data was provided jointly by the U.S. National Science Foundation under the auspices of the U.S. ...
doi:10.1175/1520-0485(2001)031<1031:tkeotm>2.0.co;2
fatcat:6own3yr4jnee5hluos5xwokkqi
Data-Driven Mapping With Prediction Neural Network for the Future Wide-Swath Satellite Altimetry
2021
Frontiers in Marine Science
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So far, considering the utilization of data-driven methods is a new researching direction for SSH mapping. ...
Compared with other methods, the root mean squared error (RMSE) of the mapping-PNN method can be limited within the range of ~1.8 cm, and the new method can promote the observation of the ocean phenomena ...
Figure 5A As indicated in Figure 5 , the absolute geostrophic velocity inversed from the Mapping-PNN method (Figure 5D ) is more similar to the true value of HYCOM than the geostrophic velocity inversed ...
doi:10.3389/fmars.2021.670683
doaj:95ed6b9355954ae086d37416d3608764
fatcat:hykr6uoxnzc2lje6vdd7enuz6i
Spatial variations in the Kuroshio nutrient transport from the East China Sea to south of Japan
2013
Biogeosciences
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</strong> Based on absolute geostrophic velocity, which was calculated using repeated hydrographic data of 39 cruises from 2000 to 2009 and nitrate concentrations measured in the same areas from 1964 to ...
2009, we obtained the temporally averaged nitrate flux (the product of velocity and nitrate concentration) and nitrate transport (integration of flux over one section) of four sections across the Kuroshio ...
The optimum reference level for the inverse method to calculate the absolute geostrophic velocity was suggested to be 2000 dbar in the region southeast of the Ryukyu Islands (Yuan et al., 1998; Zhu et ...
doi:10.5194/bg-10-6403-2013
fatcat:t5vgoaylmjd4tb5apya55wprk4
Spatial variations in the Kuroshio nutrient transport from the East China Sea to south of Japan
2013
Biogeosciences Discussions
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obtained the temporally averaged nitrate flux (the product of velocity and nitrate concentration) and nitrate transport (integration of flux over one section) of four sections across the Kuroshio from ...
Based on absolute geostrophic velocity, which was calculated using repeated hydrographic data of 39 cruises from 2000 to 2009 and nitrate concentrations measured in the same areas from 1964 to 2009, we ...
The optimum reference level for the inverse method to calculate the absolute geostrophic velocity was suggested to be 2000 dbar in the region southeast of the Ryukyu Islands (Yuan et al., 1998; Zhu et ...
doi:10.5194/bgd-10-6737-2013
fatcat:2h53ckh73bb2lbwocdtxz44qii
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