Distributions of nutrients in the East China Sea and the South China Sea connection |
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| Authors: | Chen-Tung Arthur Chen |
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| Institution: | (1) Institute of Marine Geology and Chemistry, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, Republic of China |
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| Abstract: | Surface maps of nitrate, phosphate and silicate of the East China Sea (ECS) have been constructed and are described. Reports
on exchanges of material between the ECS and the South China Sea (SCS) through the Taiwan Strait are reviewed. Recent advances
seem to have reversed the earlier view that the SCS exports nutrients to the ECS through the Taiwan Strait. This is because
the northward flow of seawater in the summer carries little nutrient. On the other hand, the waters flowing southward along
the coast of China in winter carry orders of magnitude higher nutrient concentrations. The outflow of subsurface waters from
the SCS, however, is the major source of new nutrients to the ECS continental shelves because these subsurface waters flow
out of the Luzon Strait, join the northwardly flowing Kuroshio and enter the Okinawa trough. Around 10% of the nutrients exported
from the SCS through the Luzon Strait upwell onto the ECS shelf. These inputs are larger than the aggregate of all the rivers
that empty into the ECS, contributing 49% of the externally sourced nitrogen, 71% of the phosphorous, and 54% of the silica
for the ECS. |
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| Keywords: | Nutrients Kuroshio East China Sea South China Sea teleconnection fluxes |
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