干旱区生态环境知识资源中心(Arid): Estimation of submarine groundwater discharge and nutrient loading using radium isotopes quartet in Kuwait

Arid

DOI	10.1007/s12517-020-05754-4
	Estimation of submarine groundwater discharge and nutrient loading using radium isotopes quartet in Kuwait
	Bhandary, Harish; Sabarathinam, Chidambaram
通讯作者	Bhandary, H
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:16
英文摘要	The water resources in the arid region like Kuwait are a scarce commodity. With the increasing population, industry and urbanization have lead to the demand of water resources with respect to both in quantity and quality. Therefore, quantification of submarine groundwater discharge is essential for sustainable groundwater management. Moreover, submarine groundwater discharge plays a vital role in delivering nutrients, dissolved carbon, and trace elements to the sea. This study used the naturally occurring radioactive isotopes to identify and estimate the SGD in the coastal strip of Kuwait along the Arabian Gulf. The study gains its significance in determining the loss of brackish groundwater from inland, in the arid region. The groundwater samples were collected from wells along the coast. Seawater samples were collected from Kuwait bay and open sea in transects. Samples were analyzed for major ions, nutrients, and(223)Ra,Ra-224,Ra-226, and(228)Ra. Box model and offshore gradient model approaches were used to estimate the SGD. The variation of(223)Ra,Ra-224,Ra-226, and(228)Ra concentrations was studied in different transects, and it was inferred to be influenced by the Kuwait coastal jet in the territorial waters. The water mass residence time calculated for the Kuwait Bay and the open sea ranged from 10 to 58 and 12 to 64 days, respectively. The(223)Ra-based horizontal eddy diffusion coefficients for the Kuwait Bay and the south Arabian Gulf were 205.1 and 827.5 m(2)/s, respectively. The estimation of SGD fluxes in the Kuwait Bay using box model approach based on the spatial distribution of(226)Ra and(228)Ra were 3.05 x 10(6)and 5.46 x 10(6) m(3)/day, respectively. Similarly, the estimated SGD fluxes for the south Arabian Gulf by offshore gradient model using(226)Ra and(228)Ra concentrations were 2.92 x 10(8)and 3.0 x 10(7) m(3)/day, respectively. The nutrient fluxes from groundwater to Kuwait Bay and open sea were estimated for PO43--P, SiO2-Si, and NO3--N using box model and offshore gradient model approach.
英文关键词	Radium isotopes Offshore gradient Box model Nutrient
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000560574900001
WOS关键词	COASTAL ZONE ; TAMIL-NADU ; RIVER ESTUARY ; ARABIAN GULF ; WATER ; BAY ; SGD ; RADON ; INPUTS ; AQUIFERS
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325686
作者单位	[Bhandary, Harish; Sabarathinam, Chidambaram] Kuwait Inst Sci Res, Water Resources Dev & Management Program, Water Res Ctr, Safat, Kuwait
推荐引用方式 GB/T 7714	Bhandary, Harish,Sabarathinam, Chidambaram. Estimation of submarine groundwater discharge and nutrient loading using radium isotopes quartet in Kuwait[J],2020,13(16).
APA	Bhandary, Harish,&Sabarathinam, Chidambaram.(2020).Estimation of submarine groundwater discharge and nutrient loading using radium isotopes quartet in Kuwait.ARABIAN JOURNAL OF GEOSCIENCES,13(16).
MLA	Bhandary, Harish,et al."Estimation of submarine groundwater discharge and nutrient loading using radium isotopes quartet in Kuwait".ARABIAN JOURNAL OF GEOSCIENCES 13.16(2020).