JpGU-AGU Joint Meeting 2017

講演情報

[EE]Eveningポスター発表

セッション記号 A (大気水圏科学) » A-GE 地質環境・土壌環境

[A-GE39] [EE] 地質媒体における物質移動と環境評価

2017年5月23日(火) 17:15 〜 18:30 ポスター会場 (国際展示場 7ホール)

[AGE39-P22] Spreading of Antarctic Intermediate Water in the Philippine Sea

*Nan Zang1 (1.Chinese Academy of Science Institute of Oceanography)

キーワード:the Antarctic Intermediate Water, the Mindanao Undercurrent

The Antarctic Intermediate Water (AAIW) is carried by the New Guinea Coastal Undercurrent (NGCUC) to the Philippine Sea (PS), then carried by the Mindanao Undercurrent (MUC) northward. In this study, the AAIW presents two divided parts using a stricter definition. The outshore part of AAIW locates between 400-650db, and reaches 10°N northmost. The inshore part locates below 800db, and it extends about 15°N. The two parts are connected by an anticyclonic gyre at about 1.5-3°N, 127.2-128.6°E. The wavelet spectrum of the AAIW volume indicate that the significant periods of outshore part and inshore part are 2.3 years and 3.9 years, respectively. We speculate the relationship between ENSO and the two parts of AAIW, but need deeper research about the dynamics in the future.