@article{oai:ir.kagoshima-u.ac.jp:00005145,
 author = {CHAEN, Masaaki},
 issue = {1},
 journal = {南海研紀要},
 month = {2016-10-28},
 note = {The annual variation of the north equatorial trough near 15°N and the north
equatorial countercurrent ridge near 7.5°N in the thermocline topography was investigated by making the 20°C isotherm depth topography in time and space over a six
years period. The annual variation in the latitudinal position of the north equatorial
trough has an annual cycle, being in the north from November to April and in the
south from May to October. The countercurrent ridge has a semiannual cycle, with the northward shifts from March to April and October to November, and the southward shifts from July to September and December to January, respectively. The annual
variation in the depth of both the north equatorial trough and the countercurrent
ridge tends to have an annual cycle, which is deeper from spring to early summer, and
shallower from fall to winter. The annual variation in dynamic heights and sea levels
near 7.5°N in the western tropical Pacific depends partly on the northward and southward shift of the countercurrent ridge in thermocline depths.},
 pages = {1--8},
 title = {Annual Variation of Thermocline Topography in the Western Tropical Pacific},
 volume = {4},
 year = {}
}