Nutrient flux and transport by the Kuroshio east of Taiwan

Chung Chi Chen, Sen Jan, Tien Hsia Kuo, Szu Yin Li

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The Kuroshio is the western boundary of the North Pacific Ocean. To estimate the nutrient flux and transport in the upper 250 m, measurements were conducted along a transect across the Kuroshio at 23.75° N, east of Taiwan. The results showed that the Kuroshio flowed northward at a maximum velocity varying between 0.7 and 1.4 m s− 1 at a depth of 100 m. The flow volume transport in the upper 250 m ranged from 13.43 to 17.51 Sv, accounting for 51–67% of the transport above 1000 m. The shoreward sloping isopycnals were revealed to be favorable for carrying nutrients onto the East China Sea shelf. The “nutrient stream” was located primarily at depths from 300 to 600 m, and the maximum flux ranged from 4.2 to 7.9 mmol m− 2 s− 1 for nitrates and from 0.4 to 0.7 mmol m− 2 s− 1 for phosphates. Nutrient transport in the upper 250 m varied within the range of 16.8–31.1 kmol s− 1 for nitrates and 0.8–3.9 kmol s− 1 for phosphates. This study suggests that 1) nitrate transport in the upper 250 m increases and 2) phosphate transport above 1000 m decreases during downstream transport, implying that the Kuroshio interacts with nearby ecosystems during its downstream journey.

Original languageEnglish
Pages (from-to)43-54
Number of pages12
JournalJournal of Marine Systems
Volume167
DOIs
Publication statusPublished - 2017 Mar 1

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Taiwan
nitrates
phosphates
nutrient
phosphate
nutrients
nitrate
nutrient transport
East China Sea
Pacific Ocean
volume transport
shelf sea
transect
ecosystems
ecosystem

Keywords

  • Dissolved inorganic nutrients
  • Nitrate
  • Nutrient flux
  • Nutrient transport
  • Phosphate
  • The Kuroshio

ASJC Scopus subject areas

  • Oceanography
  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Cite this

Nutrient flux and transport by the Kuroshio east of Taiwan. / Chen, Chung Chi; Jan, Sen; Kuo, Tien Hsia; Li, Szu Yin.

In: Journal of Marine Systems, Vol. 167, 01.03.2017, p. 43-54.

Research output: Contribution to journalArticle

Chen, Chung Chi ; Jan, Sen ; Kuo, Tien Hsia ; Li, Szu Yin. / Nutrient flux and transport by the Kuroshio east of Taiwan. In: Journal of Marine Systems. 2017 ; Vol. 167. pp. 43-54.
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