期刊
CONTINENTAL SHELF RESEARCH
卷 116, 期 -, 页码 116-121出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.csr.2016.01.006
关键词
Benthic Foraminifera; Subantarctic Shelf Water (SASW); Subtropical Shelf Water (STSW); South Atlantic Central Water (SACW); Plata Plume Water (PPW); Upwelling areas
类别
资金
- CAPES [PVE 151-2012, AUXPE 242/2013]
- U.S. Office of Naval Research (ONR) [N00014-02-1-0295]
- Inter-American Institute for Global Change Research (IAI) [SACC/CRN-061]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2004/01950-3]
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior) [43/2013, 23038.004320/2014-11]
- CNPq [486381/2013-7, 406801/2013-4]
The western South Atlantic continental margin, between 27 and 37 degrees S, is dominated by four main water masses: cold-fresh Subantarctic Shelf Water (SASW), warm-salty Subtropical Shelf Water (STSW), cold upwelled South Atlantic Central Water (SACW), and fresh Plata Plume Water (PPW). Despite the large seasonal variability of PPW extension along the shelf, an intense and relatively stable temperature salinity gradient separates the SASW and the STSW forming the Subtropical Shelf Front (STSF) around 32 degrees S. The two dominant shelf water masses (SASW and STSW) arise from the process of mixing of oceanic waters. The SASW originates from the dilution of Subantarctic Water due to excess precipitation and continental runoff, and the STSW consists of modified warm tropical waters and South Atlantic Central Water (SACW) diluted below PPW. A previous article demonstrates distribution of Bulimina marginata, a shelf environment and deep-sea species of benthic foraminifera, is influenced by the front location and it can be used as a proxy of the STSF in sediment core analysis. Here we show three other infaunal living species inhabiting at the Continental margin: Buccella peruviana, Globocassidulina sub-globosa and Uvigerina peregrina and their distribution limits show the interaction of Subantartic Shelf Water, Subtropical Shelf Water, and upwelling of SACW, in the bottom sediment of coastal studied areas. (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据