Cross shelf transport of terrestrial material in the marginal seas of China:implicated by the distribution pattern of dissolved Al

摘要：

　　Aluminum (Al) is one of the key parameters of GEOTRACES,which can be used as the tracer of terrestrial input from river and/or atmospheric deposition.The distribution of dissolved Al across the continental shelf in the East China Sea (ECS) shelf was examined in the spring of 2011 to estimate the potential of these waters as a source of Al to the western Pacific.Al profiles obtained in coastal,shelf and shelf edge waters demonstrate decreasing concentrations of Al with distance from the coast.The distribution of dissolved Al shows the impact of riverine input along the coastal area and also the intrusion of Kuroshio waters along the continental shelf.Along the transect from the northeast of Taiwan to the eastern end of the PN section which follows the flow axis of Kuroshio,the concentration of dissolved Al in the top 100 m layer increases northwards which indicates the contributions from continent terrestrial material.The concentrations of dissolved Al in the near bottom layer along Zhe-Min coast were 89(7 nM.An Al plume originated from the near bottom layer along Zhe-Min coast and transported eastward first and then northeastward to the shelf edge along the isopycnal surface was detected,although attenuated ~80%,strongly suggesting cross-shelf transport in the subsurface water over the continental shelf.This suggested transport passage of dissolved Al,an useful tracer for terrestrial material,may also indicate the cross-shelf transport of other macro and micro nutrients to the oligotrophic Pacific.

关键词： dissolved aluminum distributions cross-shelf transport East China Sea GEOTRACES

作者: Jing-Ling Ren Zhao-Wei Wang Ji-Liang Xuan Da-Ji Huang Jing Zhang

作者单位: Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Stat State Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai 20006

会议类型: 国际会议

会议名称: The 17th Pacific -Asian Marginal Seas Meeting(第十七届太平洋与亚洲边缘海国际会议)

会议地点: 杭州

会议语种:英文

页码: 970-973

在线出版日期: 2013-04-23（万方平台首次上网日期，不代表论文的发表时间）