Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1609435114 |
Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction | |
Stukel, Michael R.1; Aluwihare, Lihini I.2; Barbeau, Katherine A.2; Chekalyuk, Alexander M.3; Goericke, Ralf2; Miller, Arthur J.2; Ohman, Mark D.2; Ruacho, Angel2; Song, Hajoon4; Stephens, Brandon M.2; Landry, Michael R.2 | |
2017-02-07 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:6页码:1252-1257 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Enhanced vertical carbon transport (gravitational sinking and subduction) at mesoscale ocean fronts may explain the demonstrated imbalance of new production and sinking particle export in coastal upwelling ecosystems. Based on flux assessments from U-238:Th-234 disequilibrium and sediment traps, we found 2 to 3 times higher rates of gravitational particle export near a deep-water front (305 mg C.m(-2).d(-1)) compared with adjacent water or to mean (nonfrontal) regional conditions. Elevated particle flux at the front wasmechanistically linked to Fe-stressed diatoms and high-mesozooplankton fecal pellet production. Using a data assimilative regional ocean model fit to measured conditions, we estimate that an additional similar to 225 mg C.m(-2).d(-1) was exported as subduction of particle-rich water at the front, highlighting a transport mechanism that is not captured by sediment traps and is poorly quantified by most models and in situ measurements. Mesoscale fronts may be responsible for over a quarter of total organic carbon sequestration in the California Current and other coastal upwelling ecosystems. |
英文关键词 | particle flux particulate organic carbon plankton carbon cycle biological carbon pump |
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:000393422200030 |
WOS关键词 | CALIFORNIA CURRENT SYSTEM ; SEA-SURFACE TEMPERATURE ; COASTAL UPWELLING SYSTEM ; CURRENT ECOSYSTEM ; TH-234U-238 DISEQUILIBRIA ; POINT CONCEPTION ; SEDIMENT TRAPS ; PARTICLE-FLUX ; PACIFIC-OCEAN ; WATER COLUMN |
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/204844 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Florida State Univ, Earth Ocean & Atmospher Sci Dept, Tallahassee, FL 32306 USA; 2.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 3.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA; 4.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | Stukel, Michael R.,Aluwihare, Lihini I.,Barbeau, Katherine A.,et al. Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(6):1252-1257. |
APA | Stukel, Michael R..,Aluwihare, Lihini I..,Barbeau, Katherine A..,Chekalyuk, Alexander M..,Goericke, Ralf.,...&Landry, Michael R..(2017).Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(6),1252-1257. |
MLA | Stukel, Michael R.,et al."Mesoscale ocean fronts enhance carbon export due to gravitational sinking and subduction".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.6(2017):1252-1257. |
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