Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2002619117 |
Abiotic hydrogen (H-2) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere | |
Worman, Stacey L.1; Pratson, Lincoln F.1; Karson, Jeffrey A.2; Schlesinger, William H.1,3 | |
2020-06-01 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2020 |
卷号 | 117期号:24页码:13283-13293 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Free hydrogen (H-2) is a basal energy source underlying chemosynthetic activity within igneous ocean crust. In an attempt to systematically account for all H-2 within young oceanic lithosphere (<10 Ma) near the Mid-Ocean Ridge (MOR), we construct a box model of this environment. Within this control volume, we assess abiotic H2 sources (similar to 6 x 10(12) mol H-2/y) and sinks (similar to 4 x 10(12) mol H-2/y) and then attribute the net difference (similar to 2 x 10(12) mol H-2/y) to microbial consumption in order to balance the H-2 budget. Despite poorly constrained details and large uncertainties, our analytical framework allows us to synthesize a vast body of pertinent but currently disparate information in order to propose an initial global estimate for microbial H-2 consumption within young ocean crust that is tractable and can be iteratively improved upon as new data and studies become available. Our preliminary investigation suggests that microbes beneath the MOR may be consuming a sizeable portion (at least similar to 30%) of all produced H-2, supporting the widely held notion that subseafloor microbes voraciously consume H-2 and play a fundamental role in the geochemistry of Earth's ocean-atmosphere system. |
英文关键词 | biogeochemistry origins of life hydrogen Mid-Ocean Ridge microbes |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000546040300024 |
WOS关键词 | HYDROTHERMAL CIRCULATION ; SUBMARINE ERUPTION ; NATURAL HYDROGEN ; OXIDATION-STATES ; PYRITE FORMATION ; MICROBIAL LIFE ; POPPING ROCKS ; DIFFUSE FLOW ; HEAT-FLOW ; METHANE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/273376 |
专题 | 地球科学 |
作者单位 | 1.Duke Univ, Nicholas Sch Environm, Div Earth & Ocean Sci, Durham, NC 27708 USA; 2.Syracuse Univ, Dept Earth Sci, Syracuse, NY 13244 USA; 3.Cary Inst Ecosyst Studies, Millbrook, NY 12545 USA |
推荐引用方式 GB/T 7714 | Worman, Stacey L.,Pratson, Lincoln F.,Karson, Jeffrey A.,et al. Abiotic hydrogen (H-2) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(24):13283-13293. |
APA | Worman, Stacey L.,Pratson, Lincoln F.,Karson, Jeffrey A.,&Schlesinger, William H..(2020).Abiotic hydrogen (H-2) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(24),13283-13293. |
MLA | Worman, Stacey L.,et al."Abiotic hydrogen (H-2) sources and sinks near the Mid-Ocean Ridge (MOR) with implications for the subseafloor biosphere".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.24(2020):13283-13293. |
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