DOI: 10.1002/2014GL061574
论文题名: Global estimate of submarine groundwater discharge based on an observationally constrained radium isotope model
作者: Kwon E.Y. ; Kim G. ; Primeau F. ; Moore W.S. ; Cho H.-M. ; Devries T. ; Sarmiento J.L. ; Charette M.A. ; Cho Y.-K.
刊名: Geophysical Research Letters
ISSN: 0094-9501
EISSN: 1944-9232
出版年: 2014
卷: 41, 期: 23 起始页码: 8438
结束页码: 8444
语种: 英语
英文关键词: brackish groundwater
; coastal flux
; inverse modeling
; land-ocean interaction
; radium
; submarine groundwater discharge
Scopus关键词: Budget control
; Ecosystems
; Eutrophication
; Groundwater
; Inverse problems
; Isotopes
; Oceanography
; Radium
; River pollution
; Rivers
; Submarines
; Trace elements
; Brackish ground water
; Coastal ecosystems
; Continental margin
; Dominant pathways
; Harmful algal blooms
; Inverse modeling
; Submarine groundwater discharge
; Submarine groundwaters
; Discharge (fluid mechanics)
; discharge
; estimation method
; global climate
; groundwater flow
; radium
; underwater environment
; water flow
; water mass
; Atlantic Ocean
; algae
英文摘要: Along the continental margins, rivers and submarine groundwater supply nutrients, trace elements, and radionuclides to the coastal ocean, supporting coastal ecosystems and, increasingly, causing harmful algal blooms and eutrophication. While the global magnitude of gauged riverine water discharge is well known, the magnitude of submarine groundwater discharge (SGD) is poorly constrained. Using an inverse model combined with a global compilation of 228Ra observations, we show that the SGD integrated over the Atlantic and Indo-Pacific Oceans between 60-S and 70-N is (12 ± 3) × 1013 m3 yr-1, which is 3 to 4 times greater than the freshwater fluxes into the oceans by rivers. Unlike the rivers, where more than half of the total flux is discharged into the Atlantic, about 70% of SGD flows into the Indo-Pacific Oceans. We suggest that SGD is the dominant pathway for dissolved terrestrial materials to the global ocean, and this necessitates revisions for the budgets of chemical elements including carbon. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921600686&doi=10.1002%2f2014GL061574&partnerID=40&md5=a1439594bbf5bb32aae581e95d744edf
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6765
Appears in Collections: 气候减缓与适应
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作者单位: Research Institute of Oceanography, School of Earth and Environmental Sciences (BK21), Seoul National University, Seoul, South Korea
Recommended Citation:
Kwon E.Y.,Kim G.,Primeau F.,et al. Global estimate of submarine groundwater discharge based on an observationally constrained radium isotope model[J]. Geophysical Research Letters,2014-01-01,41(23).