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DOI	10.1016/j.jhydrol.2021.126356
	Capturing hotspots of fresh submarine groundwater discharge using a coupled surface-subsurface model
	Yu, Xuan; Xu, Zexuan; Moraetis, Daniel; Nikolaidis, Nikolaos P.; Schwartz, Franklin W.; Zhang, Yu; Shu, Lele; Duffy, Christopher J.; Liu, Bingjun
通讯作者	Yu, X (通讯作者)，Sun Yat Sen Univ, Ctr Water Resources & Environm, Sch Civil Engn, Guangzhou 510275, Guangdong, Peoples R China. ; Yu, X (通讯作者)，Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China.
发表日期	2021
ISSN	0022-1694
EISSN	1879-2707
卷号	598
英文摘要	Submarine groundwater discharge (SGD) contributes to the physical and chemical characters of coastal waters by discharging nutrients and contaminants, significantly impacting regional marine ecosystems and contributing to ocean chemical budgets. However, such groundwater discharge varies dramatically across scales and is often not comparable due to different model assumptions and field designs. We used a hydrologic model with integration of fundamental surface and subsurface processes to simulate the coastline level fresh SGD for the Crete Island in the Mediterranean Sea. The modeled hydrological processes suggested that fresh SGD substantially contributes to water flow entering the Mediterranean Sea (2.3 x 10(8) m(3)/yr), amounting to 31% of river discharge and 14% of precipitation. Spatially, fresh SGD varied from 2.4 m(3)/yr/m to 13.4 x 10(4) m(3)/yr/m, with an average of 2.6 x 10(3) m(3)/yr/m. The local maxima were commonly associated with river mouths reflecting larger hydraulic gradients and higher permeable structures. Temporally, fresh SGD was impacted by episodic precipitation in a delayed and prolonged pattern. We found that fresh SGD variability at the coastline segment level was compared to point measurements and fresh SGD magnitudes summered up to the catchment level were consistent with global products. Our results suggest the coupled surface-subsurface hydrologic modeling approach is a promising strategy to quantify and partition large-scale water budgets down to point observations that typically do not capture the full range of fresh SGD dynamics.
关键词	COASTAL KARST AQUIFERS NUTRIENT DISCHARGE RADIUM ISOTOPE SEEPAGE METERS WATER FLOW FLUXES INPUTS DYNAMICS BEACH
英文关键词	Submarine groundwater discharge; River runoff; Surface water-groundwater interaction; Coupled surface-subsurface model; PIHM
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000661813200127
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/255141
作者单位	[Yu, Xuan; Liu, Bingjun] Sun Yat Sen Univ, Ctr Water Resources & Environm, Sch Civil Engn, Guangzhou 510275, Guangdong, Peoples R China; [Yu, Xuan; Liu, Bingjun] Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519082, Peoples R China; [Xu, Zexuan] Lawrence Berkeley Natl Lab, Climate & Ecosyst Sci Div, Berkeley, CA 94720 USA; [Moraetis, Daniel] Univ Sharjah, Dept Appl Phys & Astron, Sharjah 27272, U Arab Emirates; [Nikolaidis, Nikolaos P.] Tech Univ Crete, Sch Environm Engn, Univ Campus, Khania 73100, Greece; [Schwartz, Franklin W.] Ohio State Univ, Sch Earth Sci, Columbus, OH 43210 USA; [Zhang, Yu] Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM 87545 USA; [Shu, Lele] Chinese Acad Sci, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Shu, Lele] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Duffy, Christopher J.] Penn State Univ, Dept Civil & Environm Engn, University Pk, PA 16802 USA
推荐引用方式 GB/T 7714	Yu, Xuan,Xu, Zexuan,Moraetis, Daniel,et al. Capturing hotspots of fresh submarine groundwater discharge using a coupled surface-subsurface model[J]. 中国科学院西北生态环境资源研究院,2021,598.
APA	Yu, Xuan.,Xu, Zexuan.,Moraetis, Daniel.,Nikolaidis, Nikolaos P..,Schwartz, Franklin W..,...&Liu, Bingjun.(2021).Capturing hotspots of fresh submarine groundwater discharge using a coupled surface-subsurface model.JOURNAL OF HYDROLOGY,598.
MLA	Yu, Xuan,et al."Capturing hotspots of fresh submarine groundwater discharge using a coupled surface-subsurface model".JOURNAL OF HYDROLOGY 598(2021).