文献类型：期刊文献

英文题名：Seasonal dynamics of submarine groundwater discharge in Zhanjiang Bay: an investigative study utilizing ²²²Rn as a tracer

作者：Lin, Xin[1,2];Chen, Xiao[1,2];Chen, Fajin[1,2];Jin, Guangzhe[1,2];Wang, Chao[1,2];Mayakrishnan, Machendiranathan[1,2];Shi, Ziyang[1,2];Si, Xiangcheng[1,2]

机构：[1]Guangdong Ocean Univ, Coll Ocean & meteorol, Key Lab Coastal Ocean Variat & Disaster Predict, Zhanjiang, Peoples R China;[2]Guangdong Ocean Univ, Resources & Environm Continental Shelf Sea & Deep, Key Lab Climate, Dept Educ Guangdong Prov, Zhanjiang, Peoples R China

年份：2024

卷号：11

外文期刊名：FRONTIERS IN MARINE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001310411600001)、、WOS

基金：We would like to thank, Qingmei Zhu and Shangjun Cai from College of Ocean and Meteorology, Guangdong Ocean University, for their support in collecting and analyzing water samples.

语种：英文

外文关键词：submarine groundwater discharge; seasonal variation; nutrients; 222 Rn; Zhanjiang Bay

外文摘要：The spatial and temporal variation of submarine groundwater discharge (SGD) has been a topic of interest for researchers in recent years. However, the study of SGD is limited within the scope of Zhanjiang Bay. The Zhanjiang Bay is located in western Guangdong Province, known for its high temperatures and typhoon vulnerability. The present study examined the fluctuation patterns of seawater Rn-222 in Zhanjiang Bay during the period from June 2021 to March 2022. This investigation employs the Rn-222 tracing technique to establish a mass balance model to compute the SGD rate, and assess the significance of SGD in translocating nutrients into the bay. We conducted a four-month sampling, observing the differences between the rainy and dry seasons. Precipitation exerts a significant influence on the seasonal variations of SGD. The SGD rates of Zhanjiang Bay ranged from 7.14 to 10.75 cmd(-1) in the dry season and from 13.38 to 14.61 cmd(-1) in the rainy season. SGD-derived nutrients also exhibited seasonal fluctuations, the annual input of nutrients it supplies may be comparable to the quantity delivered by rivers, which significantly impacted the trophic status of the bay.