globalchange  > 气候减缓与适应
DOI: 10.1002/2017JC013398
Scopus记录号: 2-s2.0-85041116972
论文题名:
Evaluation of Water Residence Time, Submarine Groundwater Discharge, and Maximum New Production Supported by Groundwater Borne Nutrients in a Coastal Upwelling Shelf System
作者: Luo X.; Jiao J.J.; Liu Y.; Zhang X.; Liang W.; Tang D.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:1
起始页码: 631
结束页码: 655
语种: 英语
英文关键词: coastal upwelling ; eastern Hainan shelf ; new production ; radium isotopes ; submarine groundwater discharge ; water residence time
Scopus关键词: biogeochemistry ; continental shelf ; discharge ; dissolved inorganic nitrogen ; groundwater ; mass balance ; mixed layer ; nutrient dynamics ; phosphate (inorganic) ; radium isotope ; residence time ; spatial distribution ; underwater environment ; upwelling ; China ; Hainan
英文摘要: The biogeochemical processes in the continental shelf systems are usually extensively influenced by coastal upwelling and submarine groundwater discharge (SGD). Using eastern Hainan upwelling shelf system as an example, this study fully investigates SGD and coastal upwelling and their effects on the coastal nutrient loadings to the mixing layer of eastern Hainan shelf. Based on the spatial distributions of 223Ra and 228Ra, water residence time is estimated to be 16.9 ± 8.9 days. Based on the mass balance models of 226Ra and 228Ra, the total SGD of the eastern Hainan shelf is estimated to be 0.8 × 108 and 1.4 × 108 m3 d−1, respectively. The groundwater borne dissolved inorganic nitrogen (DIN) and dissolved inorganic phosphate (DIP) are estimated to be up to 1121.8 and 20.4 μM m2 d−1. The coastal upwelling delivers 2741.8 μM m2 d−1 DIN and 217.7 μM m2 d−1 DIP into the mixing layer, which are predominant in all the exogenous nutrient inputs. The groundwater borne DIN will support a maximum new production of 7.5 mM C m2 d−1, about up to 24.0% of the total new production in the study area. SGD-derived nutrient could be significant as a missing DIN to support the new production in the mixing layer of eastern Hainan shelf. The findings contribute to a better understanding of biogeochemical processes under the influences of SGD and coastal upwelling in the study area and other similar coastal upwelling systems. © 2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114791
Appears in Collections:气候减缓与适应

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作者单位: Department of Earth Sciences, The University of Hong Kong, China; Shenzhen Research Institute (SRI), The University of Hong Kong, Shenzhen, China; School of Environmental Science and Engineering, South University of Science and Technology of China (SUSTC), Shenzhen, China; State Key Laboratory of Tropical Oceanography, Guangdong Key Laboratory of Ocean Remote Sensing, South China Sea, Institute of Oceanography, Chinese Academy of Sciences, Guangzhou, China

Recommended Citation:
Luo X.,Jiao J.J.,Liu Y.,et al. Evaluation of Water Residence Time, Submarine Groundwater Discharge, and Maximum New Production Supported by Groundwater Borne Nutrients in a Coastal Upwelling Shelf System[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(1)
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