Hydrogeochemistry and fractionation of boron isotopes in the inter-dune aquifer system of Badain Jaran Desert, China

Zhang，Xiaolang1,2; Luo，Xin1; Jiao，Jiu Jimmy1; Li，Hailong2; Lian，Ergang4; Yang，Shouye4; Kong，Fancui3; Kuang，Xingxing2; Zuo，Jinchao2

2021-04-01

10.1016/j.jhydrol.2021.125984

JOURNAL OF HYDROLOGY   影响因子和分区

0022-1694

1879-2707

Groundwater flow systems can be topography-controlled in arid, mountainous, and/or permeable areas. Previous theoretical studies indicated that local groundwater flow systems were usually less developed or even did not exist in recharge-controlled flow systems, and the whole flow system was dominated by regional groundwater flow system. However, the occurrence and role of local groundwater flow systems in real recharge-controlled aquifer systems are rarely addressed. The Badain Jaran Desert is featured by hyper dry climate, mega sand dune-lake landscapes, and highly permeable loose sediments, making it an ideal natural laboratory to address these issues. In this study, the local groundwater flow system and its interaction with saline lake water in the desert inter-dune aquifer are investigated via hydrogeochemical and isotopic approaches. The stable boron isotopic compositions reveal the existence of local groundwater flow systems in the hyper arid climate condition. The fresh local flow systems regulate not only the lake water volume and the lake water-groundwater mixing process, but also the ion contents and isotopic compositions of saline groundwater and lake water. Lake water-groundwater interaction manifests as fresh groundwater discharge and saline lake water intrusion. This study demonstrates that boron fractionation is applicable in deciphering groundwater flow patterns and lake water-groundwater interaction in the arid aquifer systems.

Boron isotopes Desert Groundwater flow systems Topography controlled aquifer

SCI ; EI

英语

其他

National Natural Science Foundation of China[41572208,91747204] ; Research Grants Council of Hong Kong[HKU 17304815] ; University of Hong Kong and Zhejiang Institute of Research and Innovation (HKU-ZIRI)[04003]

Engineering ; Geology ; Water Resources

Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources

WOS:000641592600036

ELSEVIER

20210609880504

Aquifers ; Boron ; Groundwater flow ; Groundwater resources ; Hydrochemistry ; Isotopes ; Lakes ; Landforms ; Saline water ; Topography

Water Resources:444 ; Groundwater:444.2 ; Geology:481.1 ; Geochemistry:481.2 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Materials Science:951

ENGINEERING

2-s2.0-85100311869

Scopus

1.Department of Earth Sciences,The University of Hong Kong,Hong Kong
2.School of Environmental Science and Engineering,Southern University of Science & Technology,Shenzhen,518055,China
3.State Key Laboratory of Marine Geology,Tongji University,Shanghai,200092,China
4.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China

Zhang，Xiaolang,Luo，Xin,Jiao，Jiu Jimmy,et al. Hydrogeochemistry and fractionation of boron isotopes in the inter-dune aquifer system of Badain Jaran Desert, China[J]. JOURNAL OF HYDROLOGY,2021,595.

Zhang，Xiaolang.,Luo，Xin.,Jiao，Jiu Jimmy.,Li，Hailong.,Lian，Ergang.,...&Zuo，Jinchao.(2021).Hydrogeochemistry and fractionation of boron isotopes in the inter-dune aquifer system of Badain Jaran Desert, China.JOURNAL OF HYDROLOGY,595.

Zhang，Xiaolang,et al."Hydrogeochemistry and fractionation of boron isotopes in the inter-dune aquifer system of Badain Jaran Desert, China".JOURNAL OF HYDROLOGY 595(2021).