Splitting of the subtropical gyre in the western North Pacific

Hasunuma, Keiichi; Yoshida, Kan

doi:10.1007/bf02108654

Cited by 95 publications

(34 citation statements)

References 11 publications

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“…The present study shows, for the first time, the existence of the large K e tongue along 20-23°N. The reason for this large K e has not yet been understood, but it should be pointed out that this region corresponds to the center of the North Pacific subtropical gyre (in the climatological mean), namely the region of the highest geopotential anomalies (Hasunuma and Yoshida, 1978).…”

Section: Discussionmentioning

confidence: 46%

“…The seasonal and interannual variations of the Subtropical Countercurrent (Hasunuma and Yoshida, 1978), the subtropical front (White et al, 1978), and the upper layer temperature (Lie and Endoh, 1991) have been studied from fragmental observations and climatological data set, but the detailed distribution of the eddy energy and the generation and propagation characteristics of mesoscale anomalies have not been fully understood. Moreover, even in relatively well-observed region as the Kuroshio Extension region, there are some discrepancies among studies as seen in the case of the zonal phase propagation speeds.…”

Section: Introductionmentioning

confidence: 99%

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Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer

Aoki

Imawaki

1996

J Oceanogr

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Section: Discussionmentioning

confidence: 46%

Section: Introductionmentioning

confidence: 99%

Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer

Aoki

Imawaki

1996

J Oceanogr

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“…The eastward volume transport of the Kuroshio south of Japan consists of two parts: one is related to basin-scale wind stresses and the other is related to the anticyclonic recirculation gyre, which is a local current system south of the Kuroshio (Hasunuma and Yoshida, 1978). Imawaki et al (2001) ASUKA.…”

Section: Current Fields At the Five Sectionsmentioning

confidence: 99%

Spatial variations in the Kuroshio nutrient transport from the East China Sea to south of Japan

Guo

Zhu²,

Yu³

et al. 2013

Biogeosciences

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Abstract. 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 from the East China Sea (sections PN and TK) to an area south of Japan (sections ASUKA and 137E). In addition, we examined section OK east of the Ryukyu Islands in order to understand how the Ryukyu Current contributes to the

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“…In contrast, the larvae were absent from the southern region (south of 16°N), which belongs to the mainstream of the NEC as a stable westward current [40].…”

Section: Laval Distribution and Transportmentioning

confidence: 89%

“…The collections of C. myriaster larvae were limited to the northern part of our survey area (17-21°N), which belongs to the marginal area adjacent to the northernmost part of the NEC (south of approximately 15°N [40]) and covers the STCC region (north of 19-20°N [40][41][42][43]). In contrast, the larvae were absent from the southern region (south of 16°N), which belongs to the mainstream of the NEC as a stable westward current [40].…”

Section: Laval Distribution and Transportmentioning

confidence: 99%

Discovery of a spawning area of the common Japanese conger Conger myriaster along the Kyushu-Palau Ridge in the western North Pacific

et al. 2012

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The common Japanese conger Conger myriaster is an important commercial coastal fisheries species in East Asia, but its spawning area has not been determined. A larval sampling survey was conducted in September 2008 along 136°E between 13°N and 22°N, which roughly followed the Kyushu-Palau Ridge in the western North Pacific. Twenty larval specimens were confirmed to be C. myriaster using DNA analysis. Two were newly hatched larvae (preleptocephali) 5.8 and 7.8 mm in total length (TL), which were caught at 17°N. The 5.8 mm TL larva was estimated to be 3-4 days after hatching, the youngest preleptocephalus (i.e., the earliest stage) of this species ever collected. Eighteen other leptocephali were caught at 18°N and 21°N, and these ranged from 18.6 to 40.0 mm TL. Based on these collections, we discerned that there is a spawning area of C. myriaster in the area along the Kyushu-Palau Ridge approximately 380 km south of Okinotorishima Island. Similar to the Japanese eel spawning area along the West Mariana Ridge, the Kyushu-Palau Ridge may play an important role as a landmark of the spawning area. The discovery of this offshore spawning area should lead us to a better understanding of the recruitment mechanisms of C. myriaster, and help to facilitate future international management efforts.

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Splitting of the subtropical gyre in the western North Pacific

Cited by 95 publications

References 11 publications

Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer

Eddy activities of the surface layer in the western North Pacific detected by satellite altimeter and radiometer

Spatial variations in the Kuroshio nutrient transport from the East China Sea to south of Japan

Discovery of a spawning area of the common Japanese conger Conger myriaster along the Kyushu-Palau Ridge in the western North Pacific

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