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Field and numerical investigation of groundwater flow and dissolved inorganic nitrogen (DIN) dynamics in a sandy nearshore aquifer

文献类型：期刊论文

作者Wang, Zhenyan1,2,3,4,10; Robinson, Clare E.4; Geng, Xiaolong5,6; Xiao, Kai3,8; Zhang, Yan1,2,10; Wang, Xuejing7; Hu, Wenli3,9; Luo, Manhua3,9; Li, Hailong3
刊名JOURNAL OF HYDROLOGY
出版日期2025
卷号646页码:10
关键词Submarine groundwater discharge Numerical modeling Dissolved inorganic nitrogen Sandy nearshore aquifer Intertidal zone
ISSN号0022-1694
DOI10.1016/j.jhydrol.2024.132330
通讯作者Li, Hailong(lihailong@sustech.edu.cn)
英文摘要Nutrients delivered to the coastal ocean via submarine groundwater discharge (SGD) can have a major impact on marine ecosystems. The flux of nutrients delivered via this pathway can be modified by biogeochemical processes occurring in coastal nearshore aquifers. This study combines field investigations with numerical simulations to characterize patterns of groundwater flow, salinity and dissolved inorganic nitrogen (DIN) in a permeable nearshore aquifer and to quantify SGD and associated DIN fluxes to the ocean. At the field study site, an upper saline plume (USP) and saltwater wedge with low DIN concentrations were observed together with a fresh groundwater zone with high DIN concentrations. Seawater infiltration predominantly occurred in the intertidal zone, contributing 85% of the total infiltration, with the greatest infiltration occurring in the upper-middle intertidal zone. The simulations indicate that the USP expanded and contracted through the tidal cycle, and the width of the high-DIN freshwater discharge zone also varying. The freshwater discharge zone was narrower around the high tide period due to expansion of the overlying low-DIN zone associated with the USP. Over the simulated period, only approximately 30% of the DIN entering the nearshore aquifer ultimately discharged to the ocean. The findings of this combined field and numerical study are needed to inform future field and numerical investigations examining the fate of DIN in nearshore aquifers.
WOS关键词NUTRIENT FLUXES ; COASTAL WATER ; SEEPAGE FACE ; DAYA BAY ; DISCHARGE ; TRANSPORT ; AMMONIUM ; ESTUARY ; INPUTS ; TIDES
WOS研究方向Engineering ; Geology ; Water Resources
语种英语
WOS记录号WOS:001361904400001
资助机构Center for Computational Science and Engineering at Southern University of Sci-ence and Technology
源URL[http://ir.yic.ac.cn/handle/133337/38190]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Li, Hailong
作者单位1.China Univ Geosci Beijing, State Key Lab Biogeol & Environm Geol, Beijing 100083, Peoples R China
2.China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Soil & Groundwater Pollut, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
4.Western Univ, Dept Civil & Environm Engn, 1151 Richmond St, London, ON N6A 3K7, Canada
5.Univ Hawaii Manoa, Dept Earth Sci, Honolulu, HI 96822 USA
6.Univ Hawaii Manoa, Water Resources Res Ctr, Honolulu, HI 96822 USA
7.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin 300072, Peoples R China
8.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
9.Univ Hong Kong, Dept Earth Sci, Hong Kong, Peoples R China
10.China Univ Geosci, Key Lab Groundwater Conservat, MWR, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Zhenyan,Robinson, Clare E.,Geng, Xiaolong,et al. Field and numerical investigation of groundwater flow and dissolved inorganic nitrogen (DIN) dynamics in a sandy nearshore aquifer[J]. JOURNAL OF HYDROLOGY,2025,646:10.
APA Wang, Zhenyan.,Robinson, Clare E..,Geng, Xiaolong.,Xiao, Kai.,Zhang, Yan.,...&Li, Hailong.(2025).Field and numerical investigation of groundwater flow and dissolved inorganic nitrogen (DIN) dynamics in a sandy nearshore aquifer.JOURNAL OF HYDROLOGY,646,10.
MLA Wang, Zhenyan,et al."Field and numerical investigation of groundwater flow and dissolved inorganic nitrogen (DIN) dynamics in a sandy nearshore aquifer".JOURNAL OF HYDROLOGY 646(2025):10.

入库方式： OAI收割

来源：烟台海岸带研究所

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