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Hydrography and nutrient dynamics along the 67 oE line of western Indian Ocean

Urheber*innen

Rho,  Taekeun
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Son,  Purena
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Choi,  Sang-Hwa
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

Kang,  Dong-Jin
IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations;

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Zitation

Rho, T., Son, P., Choi, S.-H., Kang, D.-J. (2023): Hydrography and nutrient dynamics along the 67 oE line of western Indian Ocean, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-4781


Zitierlink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5021188
Zusammenfassung
Hydrography and nutrient dynamics of the meridional sections along the 67 oE line in the western Indian Ocean were investigated during the neutral IOD events of 2017-2019 periods. Vertical distribution of temperature, salinity, and dissolved oxygen along the meridional section showed the presence of various water mass in the Indian Ocean: the Arabian Sea Surface Water (ASSW), the Red Sea Overflow Water(RSOW), the Indonesian Intermediate Water(IIW), the Subantarctic Mode Water(SAMW), the Subtropical Underwater(STUM), the Antarctic Intermediate Water(AAIW), the Indian Deep Water(IDW), and the Circumpolar Deep Water(CDW). The relative abundance of silicate over nitrate+nitrite (Si*) showed negative values at the depth of 750 m (27 oS), an indication of the northward intrusion of SAMW, and were observed in the shallow depth toward the north(~10 oS). We estimated nutrient concentration of each water type in the region and described the horizontal and vertical nutrient supplies into the surface layer.