海洋科学Issue(12)：62-67,6.
137°E断面北赤道流的结构特征和年际变化
The velocity structure and interannual variations of the No-rth Equatorial Current along the 137°E section
摘要
Abstract
The velocity structure and interannual variability of the North Equatorial Current (NEC) and its controlling mechanism were investigated based on the CTD data along the 137°E section obtained by Japan Meteorological Agency (JMA) from 1967 to 2009 and satellite altimetric sea surface height (SSH) data. The results show that the NEC is located between 8°N and 18°N, with a velocity core at 10°~12°N along the 137°E section. The EOF analysis revealed similar patterns in leading modes both in summer and winter, showing out-of-phase interannual variations for the southern and northern parts of the NEC. This phenomenon of the NEC may be controlled by abnormal cyclone and anticyclone circu-lation in the tropical western Pacific. The velocity filed in the NEC had different response to ENSO in summer compared to that in winter. In El Niño (La Niña) summer, the velocities in the upper and central NEC were strong (weak), while in El Niño (La Niña) winter, the velocities in the central and deep NEC were weak (strong).关键词
北赤道流(NEC)/年际变化/副热带环流/海表高度/EI Niño-Southern Oscillation (ENSO)Key words
the North Equatorial Current(NEC)/interannual variability/subtropical gyre/sea surface height/EI Niño-Southern Oscillation (ENSO)分类
海洋科学引用本文复制引用
杨青莹,王凡..137°E断面北赤道流的结构特征和年际变化[J].海洋科学,2013,(12):62-67,6.基金项目
国家自然科学基金(40890152) （40890152）
