Dust transport from non-East Asian sources to the North Pacific

来源 :第九届海峡两岸海洋科学研讨会 | 被引量 : 0次 | 上传用户:hefang1986
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
It is generally thought that East Asia dominates the supply of eolian dust to the North Pacific. Here we show the first data-based evidence of dust primarily from non-East Asian sources even during March 2010 when a super dust storm from East Asia struck the western Pacific. Chemical characteristics of aerosol samples collected at a high-mountain site in Taiwan show variable inputs from eolian dust and biomass burning.
其他文献
现有生态系统健康评价(ecosystem health assessment, EHA)主要以健康距离(health deviation, HD),即偏离生态系统背景值的程度,作为衡量生态健康的指标。然而,本文认为生态系统中各要素的协调程度与健康距离在EHA中同等重要。提出生态系统健康是指一个生态系统通过自我调节,能够维持自身结构—功能的稳定、以及系统中各要素间的相互协调,可以为人类发展提供生态系
硅藻吸收海水硅酸盐(Si(OH)4),同时将溶解无机碳合成为有机碳并打包在生源硅(BSi)壳体内输送至深层海洋,从而在海洋生物泵和碳循环中扮演着极其重要的角色.在高营养盐和近岸区域,硅藻生产往往贡献了超出50%的初级生产力,是硅和碳循环的主控因素.然而,由于直接测量BSi生产和溶解速率的技术要求较高、难度较大,目前对海洋硅元素生物地球化学循环的认知较之碳和氮元素仍相对匮乏.另一方面,硅稳定同位素可
会议
选取长江口缺氧区内外两个泥质区-长江口东南泥质区和济州岛西南泥质区的柱样沉积物为研究对象,在定年的基础上,开展了粒度、总有机碳和总氮(TOC、TN)、碳稳定同位素(δ13 Corg)、菜子甾醇等生物标志化合物、氧化还原敏感性元素和生物标志化合物等的分析测定,结果表明:近百年来缺氧区沉积物中TOC和TN含量自1970s起增加;δ13 Corg值、菜子甾醇等生物标志化合物含量1950年前较低,之后呈上
Dissolved organic matter (DOM) is a major component in global carbon cycles and plays an important role of governing the abundance and speciation of many chemical species and their fate, transport and
会议
Although modern (<100 years) sedimentation rates derived from 210Pb and/or 137Cs in the northern South China Sea (North-SCS) have been reported in a few previous works, source-to-sink pathways in this
会议
As seawater acidifies, the rate of iron (Fe) uptake by the nitrogen (N2)-fixing cyanobacterium Trichodesmium declines in an EDTA-buffered medium. The slower Fe uptake rate at low pH results from chang
会议