A Modified Water-Table Fluctuation Method to Characterize Regional Groundwater Discharge

Yang, Lihong1; Qi, Yongqiang2,3; Zheng, Chunmiao4; Andrews, Charles B.5; Yue, Shenghua2; Lin, Sijie4; Li, Yu6; Wang, Chengjian7; Xu, Yaqin2; Li, Haitao8

2018-04

10.3390/w10040503

Water   影响因子和分区

2073-4441

A modified Water-Table Fluctuation (WTF) method is developed to quantitatively characterize the regional groundwater discharge patterns in stressed aquifers caused by intensive agricultural pumping. Two new parameters are defined to express the secondary information in the observed data. One is infiltration efficiency and the other is discharge modulus (recurring head loss due to aquifer discharge). An optimization procedure is involved to estimate these parameters, based on continuous groundwater head measurements and precipitation records. Using the defined parameters and precipitation time series, water level changes are calculated for individual wells with fidelity. The estimated parameters are then used to further address the characterization of infiltration and to better quantify the discharge at the regional scale. The advantage of this method is that it considers recharge and discharge simultaneously, whereas the general WTF methods mostly focus on recharge. In the case study, the infiltration efficiency reveals that the infiltration is regionally controlled by the intrinsic characteristics of the aquifer, and locally distorted by engineered hydraulic structures that alter surface water-groundwater interactions. The seasonality of groundwater discharge is characterized by the monthly discharge modulus. These results from individual wells are clustered into groups that are consistent with the local land use pattern and cropping structures.

water-table fluctuation regional groundwater discharge seasonality

SCI ; EI

英语

其他

Asian Development Bank Technical Assistance Project PRC Daguhe Groundwater Rehabilitation and Protection[TA 47050-001]

Water Resources

Water Resources

WOS:000434954900157

MDPI

20181705053588

Aquifers ; Discharge (fluid mechanics) ; Efficiency ; Groundwater resources ; Hydrogeology ; Land use ; Parameter estimation ; Surface waters ; Water levels

Urban and Regional Planning and Development:403 ; Surface Water:444.1 ; Groundwater:444.2 ; Geology:481.1 ; Production Engineering:913.1

Web of Science

1.Peking Univ, Inst Water Sci, Beijing 100871, Peoples R China
2.Beijing HuanDing Environm Big Data Res Inst, Beijing 100083, Peoples R China
3.Beijing Water Int Ltd, Beijing 100089, Peoples R China
4.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Shenzhen 518055, Peoples R China
5.SS Papadopulos & Associates Inc, Bethesda, MD 20814 USA
6.Beijing Geol Prospecting & Dev Bur, Beijing 100195, Peoples R China
7.Qingdao Hydrol Bur, Qingdao 266071, Peoples R China
8.China Inst Geoenvironm Monitoring, Beijing 100081, Peoples R China

Yang, Lihong,Qi, Yongqiang,Zheng, Chunmiao,et al. A Modified Water-Table Fluctuation Method to Characterize Regional Groundwater Discharge[J]. Water,2018,10(4).

Yang, Lihong.,Qi, Yongqiang.,Zheng, Chunmiao.,Andrews, Charles B..,Yue, Shenghua.,...&Li, Haitao.(2018).A Modified Water-Table Fluctuation Method to Characterize Regional Groundwater Discharge.Water,10(4).

Yang, Lihong,et al."A Modified Water-Table Fluctuation Method to Characterize Regional Groundwater Discharge".Water 10.4(2018).