DOI: 10.1029/2017JC013405
Scopus记录号: 2-s2.0-85045879005
论文题名: Shelf-Scale Submarine Groundwater Discharge in the Northern South China Sea and East China Sea and its Geochemical Impacts
作者: Tan E. ; Wang G. ; Moore W.S. ; Li Q. ; Dai M.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期: 4 起始页码: 2997
结束页码: 3013
语种: 英语
英文关键词: carbon budget
; continental shelf
; nutrients
; Ra
; submarine groundwater discharge
Scopus关键词: biogeochemistry
; carbon budget
; continental shelf
; discharge
; dissolved inorganic carbon
; dissolved inorganic nitrogen
; flux measurement
; groundwater
; model
; nutrient cycling
; radon
; shelf dynamics
; underwater environment
; Atlantic Ocean
; China
; East China Sea
; Guangdong
; Mediterranean Sea
; Pacific Ocean
; South Atlantic Bight
; South China Sea
; Zhujiang Estuary
英文摘要: To evaluate biogeochemical impacts of shelf-scale submarine groundwater discharge (SGD), the northern South China Sea (NSCS) and the East China Sea (ECS) shelf were chosen for this study. Based on a three end-member mixing model and a Ra box model, SGD fluxes on NSCS (west and east of the Pearl River Estuary, WPRE and EPRE, respectively) and ECS shelf in winter were estimated to be 3.8–9.5 × 109, 1.4–2.2 × 109 and 0.7–2.2 ×1010 m3 d−1, respectively. Our results were equivalent to the SGD flux to the entire Mediterranean Sea, and were an order of magnitude greater than fluxes to the South Atlantic Bight. SGD associated nutrient fluxes into WPRE, EPRE and ECS were almost in the same order of magnitude, 0.2–2.4 × 103 mol m−1 d−1 for dissolved inorganic nitrogen, 1.2–9.8 mol m−1 d−1 for soluble reactive phosphorus, and 0.4–3.4 × 103 mol m−1 d−1 for dissolved silicate. Moreover, SGD delivered 1.1–2.8 × 104, 0.6–0.9 × 104, 1.7–5.1 × 104 mol m−1 d−1 dissolved inorganic carbon and 1.1–2.7 × 104, 0.5–0.8 × 104, 1.6–4.8 × 104 mol m−1 d−1 total alkalinity to WPRE, EPRE and ECS, respectively. Shelf-scale SGD is a significant source of nutrients and carbon, and may pose great impacts on regional marine ecosystems. © 2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114201
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, China; College of Ocean and Earth Sciences, Xiamen University, Xiamen, China; Fujian Provincial Key Laboratory for Coastal Ecology and Environmental Studies, Xiamen University, Xiamen, China; Department of Earth and Ocean Sciences, University of South Carolina, Columbia, SC, United States
Recommended Citation:
Tan E.,Wang G.,Moore W.S.,et al. Shelf-Scale Submarine Groundwater Discharge in the Northern South China Sea and East China Sea and its Geochemical Impacts[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(4)