气候变化领域集成服务门户(CCPortal): Estimating long-term groundwater storage and its controlling factors in Alberta; Canada

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DOI	10.5194/hess-22-6241-2018
	Estimating long-term groundwater storage and its controlling factors in Alberta; Canada
	Bhanja S.N.; Zhang X.; Wang J.
发表日期	2018
ISSN	1027-5606
起始页码	6241
结束页码	6255
卷号	22 期号:12
英文摘要	Groundwater is one of the most important natural resources for economic development and environmental sustainability. In this study, we estimated groundwater storage in 11 major river basins across Alberta, Canada, using a combination of remote sensing (Gravity Recovery and Climate Experiment, GRACE), in situ surface water data, and land surface modeling estimates (GWSAsat).We applied separate calculations for unconfined and confined aquifers, for the first time, to represent their hydrogeological differences. Storage coefficients for the individual wells were incorporated to compute the monthly in situ groundwater storage (GWSAobs). The GWSAsat values from the two satellitebased products were compared with GWSAobs estimates. The estimates of GWSAsat were in good agreement with the GWSAobs in terms of pattern and magnitude (e.g., RMSE ranged from 2 to 14 cm). While comparing GWSAsat with GWSAobs, most of the statistical analyses provide mixed responses; however the Hodrick-Prescott trend analysis clearly showed a better performance of the GRACE-mascon estimate. The results showed trends of GWSAobs depletion in 5 of the 11 basins. Our results indicate that precipitation played an important role in influencing the GWSAobs variation in 4 of the 11 basins studied. A combination of rainfall and snowmelt positively influences the GWSAobs in six basins.Water budget analysis showed an availability of comparatively lower terrestrial water in 9 of the 11 basins in the study period. Historical groundwater recharge estimates indicate a reduction of groundwater recharge in eight basins during 1960-2009. The output of this study could be used to develop sustainable water withdrawal strategies in Alberta, Canada. © Author(s) 2018. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	Aquifers; Budget control; Digital storage; Hydrogeology; Remote sensing; Surface waters; Sustainable development; Water conservation; Controlling factors; Economic development; Environmental sustainability; Gravity recovery and climate experiments; Ground water recharge; Groundwater storage; Land surface modeling; Storage coefficient; Groundwater resources; economic development; estimation method; GRACE; groundwater; land surface; precipitation (chemistry); rainfall; recharge; remote sensing; river basin; snowmelt; surface water; trend analysis; water budget; water storage; Alberta; Canada
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159834
作者单位	Bhanja, S.N., Athabasca River Basin Research Institute (ARBRI), Athabasca University, 1 University Drive, Athabasca, AB T9S 3A3, Canada; Zhang, X., School of Computing and Information System, Athabasca University, 1 University Drive, Athabasca, AB T9S 3A3, Canada; Wang, J., Athabasca River Basin Research Institute (ARBRI), Athabasca University, 1 University Drive, Athabasca, AB T9S 3A3, Canada
推荐引用方式 GB/T 7714	Bhanja S.N.,Zhang X.,Wang J.. Estimating long-term groundwater storage and its controlling factors in Alberta; Canada[J],2018,22(12).
APA	Bhanja S.N.,Zhang X.,&Wang J..(2018).Estimating long-term groundwater storage and its controlling factors in Alberta; Canada.Hydrology and Earth System Sciences,22(12).
MLA	Bhanja S.N.,et al."Estimating long-term groundwater storage and its controlling factors in Alberta; Canada".Hydrology and Earth System Sciences 22.12(2018).