Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL071348 |
Allochthonous sources and dynamic cycling of ocean dissolved organic carbon revealed by carbon isotopes | |
Zigah, Prosper K.1; McNichol, Ann P.1; Xu, Li1; Johnson, Carl1; Santinelli, Chiara2; Karl, David M.3,4; Repeta, Daniel J.1 | |
2017-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Italy |
英文摘要 | We present concentration and isotopic profiles of total, size, and polarity fractionated dissolved organic carbon (DOC) from Station ALOHA (A Long-term Oligotrophic Habitat Assessment), an oligotrophic site in the North Pacific Ocean. The data show that, between the surface and 3500 m, low molecular weight (LMW) hydrophilic DOC, LMW hydrophobic DOC, and high molecular weight (HMW) DOC constitute 22-33%, 45-52%, and 23-35% of DOC, respectively. LMW hydrophilic DOC is more isotopically depleted (delta C-13 of -23.9 parts per thousand to -31.5 parts per thousand and Delta C-14 of -304 parts per thousand to -795 parts per thousand; mean age of 2850 to 15000 years) than the LMW hydrophobic DOC (delta C-13 of -22 parts per thousand to -23 parts per thousand and Delta C-14 of -270 parts per thousand to -568 parts per thousand; 2470 to 6680 years) and HMW DOC (delta C-13 of similar to-21 parts per thousand and Delta C-14 of -24 parts per thousand to -294 parts per thousand; 135-2700 years). Our analyses suggest that a large fraction of DOC may be derived from allochthonous sources such as terrestrial and hydrothermal DOC and cycle on much longer time scales of > 10000 years or enter the ocean as preaged carbon. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398183700041 |
WOS关键词 | NORTH PACIFIC-OCEAN ; RADIOCARBON ANALYSIS ; HUMIC SUBSTANCES ; ATLANTIC BIGHT ; SARGASSO SEA ; BLACK CARBON ; MATTER ; C-14 ; SEAWATER ; SPECTROMETRY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28697 |
专题 | 气候变化 |
作者单位 | 1.Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA; 2.Ist Biofis, Consiglio Nazl Ric, Pisa, Italy; 3.Univ Hawaii, Daniel K Inouye Ctr Microbial Oceanog, Honolulu, HI 96822 USA; 4.Univ Hawaii, Res & Educ, Honolulu, HI 96822 USA |
推荐引用方式 GB/T 7714 | Zigah, Prosper K.,McNichol, Ann P.,Xu, Li,et al. Allochthonous sources and dynamic cycling of ocean dissolved organic carbon revealed by carbon isotopes[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(5). |
APA | Zigah, Prosper K..,McNichol, Ann P..,Xu, Li.,Johnson, Carl.,Santinelli, Chiara.,...&Repeta, Daniel J..(2017).Allochthonous sources and dynamic cycling of ocean dissolved organic carbon revealed by carbon isotopes.GEOPHYSICAL RESEARCH LETTERS,44(5). |
MLA | Zigah, Prosper K.,et al."Allochthonous sources and dynamic cycling of ocean dissolved organic carbon revealed by carbon isotopes".GEOPHYSICAL RESEARCH LETTERS 44.5(2017). |
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