Citation: | HOU Guohua, GAO Maosheng, DANG Xianzhang, CHEN Guangquan. Water and salt sources and salinization of shallow saline groundwater in the coastal area of Yancheng, Jiangsu[J]. Marine Geology & Quaternary Geology, 2021, 41(4): 48-59. doi: 10.16562/j.cnki.0256-1492.2020082701 |
For the purpose to identify the sources of groundwater and salt and the salinization of shallow groundwater in the coastal area of Yancheng, Jiangsu province, different types of water samples are collected, such as the river water, rainwater, seawater, underground fresh water, brackish water, salt water in the study area during the period from 2018 to 2019. The chemical composition and ions ratio, Piper diagram, hydrogen and oxygen isotopic composition and 14C dating results are analyzed. The results suggest that: (1) The phreatic water and the first confined water are dominated by saline water. The upper layer of the phreatic aquifer is less than 10 m in thickness and widely desalinated, which changes seawards from fresh water, brackish water to salty water. (2) The water in the phreatic aquifer and the first confined aquifer mainly come from precipitation replenishment in the Holocene warm period, and salinity mainly come from the ancient residual seawater that has suffered strong evaporation and concentration. (3) Groundwater in the phreatic desalination layer mainly comes from modern precipitation replenishment, and salinity mainly comes from the dissolution of rock salt and aluminosilicate minerals, the salinization of groundwater in some areas of the abandoned Yellow River estuary is mainly affected by seawater intrusion.
[1] | 薛春汀, 刘健, 孔祥淮. 全新世淮河三角洲初步研究[J]. 第四纪研究, 2010, 30(5):892-901 doi: 10.3969/j.issn.1001-7410.2010.05.06 XUE Chunting, LIU Jian, KONG Xianghuai. Preliminary study of holocene Huaihe river delta on west coastal plain of Yellow Sea, China [J]. Quaternary Sciences, 2010, 30(5): 892-901. doi: 10.3969/j.issn.1001-7410.2010.05.06 |
[2] | 薛春汀, 周永青, 朱雄华. 晚更新世末至公元前7世纪的黄河流向和黄河三角洲[J]. 海洋学报, 2004, 26(1):48-61 XUE Chunting, ZHOU Yongqing, ZHU Xionghua. The Huanghe river course and delta from end of late pleistocene to the 7th century BC [J]. Acta Oceanologica Sinica, 2004, 26(1): 48-61. |
[3] | 张忍顺. 苏北黄河三角洲及滨海平原的成陆过程[J]. 地理学报, 1984, 39(2):173-184 doi: 10.3321/j.issn:0375-5444.1984.02.005 ZHANG Renshun. Land-forming history of the Huanghe river delta and coastal plain of north Jiangsu [J]. Acta Geographica Sinica, 1984, 39(2): 173-184. doi: 10.3321/j.issn:0375-5444.1984.02.005 |
[4] | 张旸, 陈沈良. 苏北废黄河三角洲海岸时空演变遥感分析[J]. 海洋科学进展, 2009, 27(2):166-175 doi: 10.3969/j.issn.1671-6647.2009.02.006 ZHANG Yang, CHEN Shenliang. Remote sensing analysis of spatial and temporal changes of the coastal area in the abandoned Huanghe river delta in the northern Jiangsu province [J]. Advances in Marine Science, 2009, 27(2): 166-175. doi: 10.3969/j.issn.1671-6647.2009.02.006 |
[5] | 付昌昌. 淮河流域沿海平原深层地下水水化学特征及咸水成因[D]. 吉林大学硕士学位论文, 2015. FU Changchang. The hydrochemical characteristics and processes for salinity sources of the deep confined groundwater in the coastal plain of Huai river basin[D]. Master Dissertation of Jilin University, 2015. |
[6] | Lee K S, Wenner D B, Lee I. Using H- and O-isotopic data for estimating the relative contributions of rainy and dry season precipitation to groundwater: example from Cheju island, Korea [J]. Journal of Hydrology, 1999, 222(1-4): 65-74. doi: 10.1016/S0022-1694(99)00099-2 |
[7] | Mehta S, Fryar A E, Banner J L. Controls on the regional-scale salinization of the Ogallala aquifer, southern high plains, Texas, USA [J]. Applied Geochemistry, 2000, 15(6): 849-864. doi: 10.1016/S0883-2927(99)00098-0 |
[8] | 刘贯群, 朱利文, 孙运晓. 大沽河下游地区地下咸水的水化学特征及成因[J]. 中国海洋大学学报, 2019, 49(5):84-92 LIU Guanqun, ZHU Liwen, SUN Yunxiao. Hydrochemical characteristics and origins of salt groundwater in the lower reaches of Dagu river [J]. Periodical of Ocean University of China, 2019, 49(5): 84-92. |
[9] | 侯国华, 高茂生, 党显璋. 唐山曹妃甸浅层地下水水化学特征及咸化成因[J]. 地学前缘, 2019, 26(6):49-57 HOU Guohua, GAO Maosheng, DANG Xianzhang. Hydrochemical characteristics and salinization causes of shallow groundwater in Caofeidian, Tangshan city [J]. Earth Science Frontiers, 2019, 26(6): 49-57. |
[10] | 沈照理. 水文地球化学基础[M]. 北京: 地质出版社, 1993: 86-90. SHEN Zhaoli. Fundamentals of Hydrogeochemistry[M]. Beijing: Geological Publishing House, 1993: 86-90. |
[11] | Wang Y, Jiao J J. Origin of groundwater salinity and hydrogeochemical processes in the confined quaternary aquifer of the Pearl River delta, China [J]. Journal of Hydrology, 2012, 438-439: 112-124. doi: 10.1016/j.jhydrol.2012.03.008 |
[12] | 杨巧凤, 王瑞久, 徐素宁, 等. 莱州湾沿岸寿光、莱州和龙口地下水的稳定同位素与地球化学[J]. 地质学报, 2016, 90(4):801-817 doi: 10.3969/j.issn.0001-5717.2016.04.014 YANG Qiaofeng, WANG Ruijiu, XU Suning, et al. Hydrogeochemistry and stable isotopes of groundwater from Shouguang, Laizhou and Longkou in the south coast aquifer of Laizhou bay [J]. Acta Geologica Sinica, 2016, 90(4): 801-817. doi: 10.3969/j.issn.0001-5717.2016.04.014 |
[13] | Kim Y, Lee K S, Koh D C, et al. Hydrogeochemical and isotopic evidence of groundwater salinization in a coastal aquifer: a case study in Jeju volcanic island, Korea [J]. Journal of Hydrology, 2003, 270(3-4): 282-294. doi: 10.1016/S0022-1694(02)00307-4 |
[14] | Schiavo M A, Hauser S, Povinec P P. Stable isotopes of water as a tool to study groundwater–seawater interactions in coastal south-eastern Sicily [J]. Journal of Hydrology, 2009, 364(1-2): 40-49. doi: 10.1016/j.jhydrol.2008.10.005 |
[15] | 章斌, 郭占荣, 高爱国, 等. 用氢氧稳定同位素评价闽江河口区地下水输入[J]. 水科学进展, 2012, 23(4):539-548 ZHANG Bin, GUO Zhanrong, GAO Aiguo, et al. Estimating groundwater discharge into Minjiang river estuary based on stable isotopes deuterium and oxygen-18 [J]. Advances in Water Science, 2012, 23(4): 539-548. |
[16] | Han D M, Song X F, Currell M J, et al. Chemical and isotopic constraints on evolution of groundwater salinization in the coastal plain aquifer of Laizhou bay, China [J]. Journal of Hydrology, 2014, 508: 12-27. doi: 10.1016/j.jhydrol.2013.10.040 |
[17] | Han D M, Kohfahl C, Song X F, et al. Geochemical and isotopic evidence for palaeo-seawater intrusion into the south coast aquifer of Laizhou bay, China [J]. Applied Geochemistry, 2011, 26(5): 863-883. doi: 10.1016/j.apgeochem.2011.02.007 |
[18] | 姜月华, 贾军元, 许乃政, 等. 苏锡常地区地下水同位素组成特征及其意义[J]. 中国科学: 地球科学, 2008, 51(6):778-787 doi: 10.1007/s11430-008-0055-y JIANG Yuehua, JIA Junyuan, XU Naizhen, et al. Isotopic characteristics of groundwater in Changzhou, Wuxi and Suzhou area and their implications [J]. Science in China Series D: Earth Sciences, 2008, 51(6): 778-787. doi: 10.1007/s11430-008-0055-y |
[19] | 赵继昌, 梁静, 蔡鹤生. 苏北平原地下咸淡水形成与含水介质的关系[J]. 水文地质工程地质, 1993(3):25-27 ZHAO Jichang, LIANG Jing, CAI Hesheng. Relation between formation of salt-fresh water and water-bearing medium in the plain of Su Bei [J]. Hydrogeology and Engineering Geology, 1993(3): 25-27. |
[20] | 张岩, 付昌昌, 毛磊, 等. 江苏盐城地区地下水水化学特征及形成机理[J]. 长江流域资源与环境, 2017, 26(4):598-605 doi: 10.11870/cjlyzyyhj201704013 ZHANG Yan, FU Changchang, MAO Lei, et al. Hydrochemical characteristics and formation mechanism of the groundwater in Yancheng, Jiangsu province [J]. Resources and Environment in the Yangtze Basin, 2017, 26(4): 598-605. doi: 10.11870/cjlyzyyhj201704013 |
[21] | 葛勤. 沿海地区弱透水层孔隙水水化学形成与演化: 以苏北平原为例[D]. 中国地质大学博士学位论文, 2018. GE Qin. The formation and geochemical evolution of porewater in the coastal clay-rich aquitards: a case study in north Jiangsu coastal plain[D]. Doctor Dissertation of China University of Geosciences, 2018. |
[22] | Clark I D, Fritz P. Environmental Isotopes in Hydrogeology[M]. Boca Raton, FL: CRC Press/Lewis Publishers, 1997: 206-215. |
[23] | 康博. 江苏沿海地区地下水演化与合理开发利用研究[D]. 吉林大学博士学位论文, 2017. KANG Bo. The study of groundwater evolution and rational exploitation and utilizing in Jiangsu coastal area[D]. Doctor Dissertation of Jilin University, 2017. |
[24] | 中国地质调查局. 水文地质手册[M]. 2版. 北京: 地质出版社, 2012: 102. China Geological Survey. Handbook of Hydrogeology[M]. 2nd ed. Beijing: Geological Publishing House, 2012: 102. |
[25] | 许乃政, 刘红樱, 魏峰, 等. 江苏洋口港地区地下水的环境同位素组成及其形成演化研究[J]. 环境科学学报, 2015, 35(12):3862-3871 XU Naizheng, LIU Hongying, WEI Feng, et al. Study on the environmental isotope compositions and their evolution in groundwater of Yoco port in Jiangsu province, China [J]. Acta Scientiae Circumstantiae, 2015, 35(12): 3862-3871. |
[26] | Liu Y Z, Wu Q, Lin P, et al. Restudy of the storage and migration model of the quaternary groundwater in Beijing plain area [J]. Science China Earth Sciences, 2012, 55(7): 1147-1158. doi: 10.1007/s11430-012-4417-0 |
[27] | Leybourne M I, Goodfellow W D. Br/Cl ratios and O, H, C, and B isotopic constraints on the origin of saline waters from eastern Canada [J]. Geochimica et Cosmochimica Acta, 2007, 71(9): 2209-2223. doi: 10.1016/j.gca.2007.02.011 |
[28] | Panno S V, Hackley K C, Hwang H H, et al. Characterization and Identification of Na-Cl sources in ground water [J]. Ground Water, 2006, 44(2): 176-187. doi: 10.1111/j.1745-6584.2005.00127.x |
[29] | Edmunds W M. Geochemistry's vital contribution to solving water resource problems [J]. Applied Geochemistry, 2009, 24(6): 1058-1073. doi: 10.1016/j.apgeochem.2009.02.021 |
Location of monitoring sites and hydrogeological profile of Yancheng coastal area
Variations of precipitation and groundwater levels with time (2018.10—2019.09)
Vertical changes of groundwater EC in phreatic aquifer
Spatial distribution characteristics of groundwater TDS
Vertical distribution characteristics of groundwater TDS
Plot of δD vs. δ18O of meteoric waters, river waters and groundwater
Plot of δ18O vs. 14C of groundwater
Piper diagram of groundwater chemistry
Variations of Ca/Cl, Mg/Cl, Na/Cl, Cl/Br with Cl- concentration of groundwater
Plot of δ18O vs. Cl- of groundwater