Structure of the Tsushima Current in the southwestern Japan Sea

Katoh, Osamu

doi:10.1007/bf02239520

Cited by 92 publications

(44 citation statements)

References 11 publications

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“…The warm Kuroshio and Tsushima Currents flow from south to north along Japan (Fig. 1) at speeds of 1-2 and 0.2-0.5 m s -1 , respectively (Katoh 1994;Sugisaki et al 2010;Ito et al 2014). If coral larvae are carried with these currents, their dispersal rate could reach at least 17 km d -1 .…”

Section: Discussionmentioning

confidence: 99%

An improved estimation of the poleward expansion of coral habitats based on the inter-annual variation of sea surface temperatures

et al. 2015

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The poleward expansion of coral habitats has been observed along the Japanese coast since the 1930s. Previous modeling studies have projected a poleward expansion using decadal-mean sea surface temperatures (SSTs) in the coldest months. However, this poleward expansion could be affected by the inter-annual variation of SST in the coldest months, which has not been considered before. In this study, the simulated pattern of poleward expansion was compared between cases where coral mortality was considered based on the inter-annual variation of SST and the decadal-mean SST in the coldest months. Modeled monthly mean SSTs for historical and future global warming simulations from the most recent climate projection model (MIROC4h) were used. The poleward expansion of corals simulated by considering mortality based on the inter-annual variation of SST in the coldest months better reproduced the observed poleward expansion speed compared to the simulations without such a consideration. Our results show the importance of considering coral mortality based on the inter-annual variation of seawater temperature to produce a more realistic poleward expansion of coral habitats.

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Section: Discussionmentioning

confidence: 99%

An improved estimation of the poleward expansion of coral habitats based on the inter-annual variation of sea surface temperatures

et al. 2015

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“…A large number of studies have been made of the hydrography of the Japan/East Sea and, more recently, acoustic Doppler current profiler (ADCP) measurements have also become more routine along selected transacts [Katoh, 1994]. These data show that warm water enters the Korea Strait and exits the Tsugaru and Soya Straits, with a subpolar front bounding o the warm waters at 39 N in the central portion of the Japan/East Sea [Moriyasu, 1972].…”

Section: Introductionmentioning

confidence: 99%

Energetics of the surface circulation of the Japan/East Sea

Lee¹,

Niiler²,

Lee³

et al. 2000

J. Geophys. Res.

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Abstract. During the period of August 1987 to June 1998, 96 Argos-tracked drifters traversed through the Japan/East Sea. The displacement data from these drifters were used to compute 1-3 day average current vectors, which described the circulation at 15 rn depth. The drifters that passed through the Korea Strait via the western channel were caught by the East Korean Warm Current, and the drifters that passed through the eastern channel were caught by the Tsushima Current. Individual observations of the 3 day average current over 40 cm s -1 were made in the warm waters south of the subpolar front and along the coasts. There was a distinct decrease of eddy energy northward across the subpolar front. Conversion rates of eddy kinetic energy due to eddy mean flow interaction showed significant regions of both dissipation and production.

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“…The absence of the EKWC and intensification of the OB that we verified directly in the year 2000 is similarly identified in 1993-1994 and in 1996 since the T/P section also shows OB strengthening during these time periods. The OB is absent during large portions of 1994, 1997, 1998. A strong UWE period, similar to 1999 also occurs at the beginning of the T/P section, 1993-1994.…”

Section: Traefc 127mentioning

confidence: 99%

“…Cho and Kim (1996) suggest the absence of the EKWC in winter using satellite images with concurrent hydrographic data. The absence of the EKWC, however, was also found in summer or fall (Hong et al, 1984;Katoh, 1994;Mitchell et al, 2004a). In contrast, Kawabe (1982a) suggests that the first branch at least exists during spring and summer, the second branch exists only during summer, while the third branch (the EKWC) exists throughout the year.…”

Section: Introductionmentioning

confidence: 99%

Decadal Current Variations in the Southwestern Japan/East Sea

et al. 2004

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The public importing burden for This 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 data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, inducing suggestions for reducing the burden, to the Department of Defense, Executive Services and Communications Directorate 10704-0188). Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ORGANIZATION.REPORT DATE (DD-MM-YYYY) SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Office of Naval Research 800 N. Quincy St. Arlington, VA 22217-5660 SPONSOR/MONITOR'S ACRONYM(S) ONR SPONSOR/MONITOR'S REPORT NUMBER(S) DISTRIBUTION/AVAILABILITY STATEMENTApproved for public release, distribution is unlimited. SUPPLEMENTARY NOTES ABSTRACTAbsolute geostropbic velocities were calculated along TOPEX/Poseidon (T/P) groundtracks located in the Ulleung Basin of the southwestern Japan/East Sea (JES) from a combined analysis of nearly a decade of T/P data.and two years of pressure-gauge-equipped inverted echo sounder (PIES) data obtained during the United States Office of Naval Research's JES Program^ Geostrophic velocities have been calculated daily for the Ulleung Basin from June 1999 to July 2001 from a three-dimensional mapping of temperature and salinity produced by PIES data interpreted via ' the Gravest Empirical Mode (GEM) technique combined with the Navy's Modular Ocean Data Assimilation System (MODAS). These velocities were then used to convert T/P velocity anomalies to absolute velocities for the T/P time period of 1993 to 2002. Current intensities and variabilities associated with the East Korean Warm Current, Ulleung Warm Eddy, and Offshore Branch are examined. Spatial and temporal variations of the sea surface circulation are strong. Intensification of the currents generally occurred during the fall season. The flow pattern in individual years differed greatly from year to year and differed from climatology in important qualitative ways. SUBJECT TERMS

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Structure of the Tsushima Current in the southwestern Japan Sea

Cited by 92 publications

References 11 publications

An improved estimation of the poleward expansion of coral habitats based on the inter-annual variation of sea surface temperatures

An improved estimation of the poleward expansion of coral habitats based on the inter-annual variation of sea surface temperatures

Energetics of the surface circulation of the Japan/East Sea

Decadal Current Variations in the Southwestern Japan/East Sea

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