文章基本信息

标题：Submarine fresh groundwater discharge into Laizhou Bay comparable to the Yellow River flux
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作者：Xuejing Wang ; Hailong Li ; Jiu Jimmy Jiao 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep08814
出版社：Springer Nature
摘要：Near- and off-shore fresh groundwater resources become increasingly important with the social and economic development in coastal areas. Although large scale (hundreds of km) submarine groundwater discharge (SGD) to the ocean has been shown to be of the same magnitude order as river discharge, submarine fresh groundwater discharge (SFGD) with magnitude comparable to large river discharge is never reported. Here, we proposed a method coupling mass-balance models of water, salt and radium isotopes based on field data of ²²³Ra, ²²⁶Ra and salinity to estimate the SFGD, SGD. By applying the method in Laizhou Bay (a water area of ~6000 km²), we showed that the SFGD and SGD are 0.57 ~ 0.88 times and 7.35 ~ 8.57 times the annual Yellow River flux in August 2012, respectively. The estimate of SFGD ranges from 4.12 × 10⁷ m³/d to 6.36 × 10⁷ m³/d, while SGD ranges from 5.32 × 10⁸ m³/d to 6.20 × 10⁸ m³/d. The proportion of the Yellow River input into Laizhou Bay was less than 14% of the total in August 2012. Our method can be used to estimate SFGD in various coastal waters.