气候变化领域集成服务门户(CCPortal): Submarine groundwater discharge and associated nutrient flux from southwest coast of India

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DOI	10.1016/j.marpolbul.2020.111767
	Submarine groundwater discharge and associated nutrient flux from southwest coast of India
	George M.E.; Akhil T.; Remya R.; Rafeeque M.K.; Suresh Babu D.S.
发表日期	2020
ISSN	0025326X
英文摘要	The nutrient discharge associated with submarine groundwater discharge (SGD) into the Arabian Sea has been investigated for the first time using the Radon isotope (222Rn) mass balance model at three sites along the southwest coast of India. The SGD flux varied in the range of 49.48×104 - 335.84×104 m3/day, with high (low) discharge during the low (high) tide. SGD delivers a considerable amount of the nutrient into the Arabian Sea with 2.10×104 to 11.66×104 mol/day dissolved inorganic nitrogen (DIN), 1.23×102 to 56.31×102 mol/day dissolved inorganic phosphate (DIP), and 7.28×104 to 24.44×104 mol/day dissolved silicate (DSi). This significant nutrient input to the coastal waters through SGD is mainly attributed to the land-use practices like agricultural activities, improper waste disposal, and thickly populated coastal settlement zones. The increase in the nutrient discharge may lead to phytoplankton bloom in the nearshore environment and can accelerate seasonal coastal hypoxia over the western Indian shelf. This evidence of considerably high nutrient flux through SGD advocates the importance of understanding SGD associated flux along the southwest coast of India to maintain a sustainable ecological balance. © 2020 Elsevier Ltd
英文关键词	Coastal aquifers; Nutrient flux; Radon; Southwest coast of India; Submarine groundwater discharge
语种	英语
scopus关键词	Agricultural robots; Coastal zones; Dissolution; Groundwater; Land use; Nutrients; Silicates; Submarines; Waste disposal; Agricultural activities; Coastal settlement; Dissolved inorganic nitrogens; Inorganic phosphates; Mass balance model; Nutrient discharges; Phytoplankton bloom; Submarine groundwater discharge; Discharge (fluid mechanics)
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149313
作者单位	Coastal Processes Group, National Centre for Earth Science Studies, Thiruvananthapuram, Kerala, India; Department of Marine Geology and Geophysics, School of Marine Sciences, Cochin University of Science and Technology, Kochi, Kerala, India; University of Kerala, Thiruvananthapuram, Kerala, India
推荐引用方式 GB/T 7714	George M.E.,Akhil T.,Remya R.,et al. Submarine groundwater discharge and associated nutrient flux from southwest coast of India[J],2020.
APA	George M.E.,Akhil T.,Remya R.,Rafeeque M.K.,&Suresh Babu D.S..(2020).Submarine groundwater discharge and associated nutrient flux from southwest coast of India.Marine Pollution Bulletin.
MLA	George M.E.,et al."Submarine groundwater discharge and associated nutrient flux from southwest coast of India".Marine Pollution Bulletin (2020).