Characteristics and formation of Eastern South Pacific Intermediate Water
Characteristics and formation of Eastern South Pacific Intermediate Water
复制标题
南太平洋东部中层水的特征及形成
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
L. Bravo
中科院分区：
文献类型：
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作者：
W. Schneider;R. Fuenzalida;E. Rodríguez;J. Garcés;L. Bravo
从东南太平洋新收集的水文数据与其他高质量数据（主要是WOCE）相结合，以重新评估东南太平洋中层水（ESPIW）的属性和边界;迄今为止，ESPIW的描述很少。ESPIW岩芯位于智利中部和北方外海，在海岸线与90°W和20-38°S之间。位于50-400米深处，其温度在11-13°C之间变化，盐度在34.1-34.3之间，其sigma‐t在25.75-26.25 kgm−3之间。ESPIW随副热带涡旋环流扩散，可追踪到至少150°W。ESPIW是通过向风驱动的环流东南方向俯冲的过程形成的，它将智利中部以外的沃茨的表面特性传达给热带纬度。
Newly gathered hydrographic data from the Eastern South Pacific is combined with other high‐quality data (mainly WOCE) to reassess the properties and boundaries of the Eastern South Pacific Intermediate Water (ESPIW); to date the ESPIW has been only poorly described. The ESPIW core is found off central and northern Chile, between the coast and 90°W and 20–38°S. Located at 50–400 m of depth, its temperature varies between 11–13°C, salinity ranges from 34.1–34.3, and its sigma‐t lies between 25.75–26.25 kgm−3. ESPIW spreads with the subtropical gyre circulation and can be traced to at least 150°W. Formed through the process of subduction southeastward of the wind‐driven gyre circulation, the ESPIW communicates surface properties of the waters off central Chile to tropical latitudes.