Estimation of spatio-temporal groundwater storage variations in the Lower Transboundary Indus Basin using GRACE satellite

Ali, Shoaib; Wang, Qiumei; Dong, Liu; Fu, Qiang; Rahaman, Md. Mafuzur; Faiz, Muhammad Abrar; Cheema, Muhammad Jehanzeb Masud

doi:10.1016/j.jhydrol.2021.127315

Cited by 54 publications

(20 citation statements)

References 72 publications

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“…The graph also shows that the largest discharge of groundwater from the Karoo aquifer occurs in Lesotho. Similar conclusions were reached in previous studies in California [41,42], China [43,44], India [45-50], Iran [51], the Indus Basin transboundary aquifer [52], Kenya [53] and the North-Western Sahara Aquifer System (NWSAS) [54], where groundwater storage was found to be declining over time.…”

Section: Spatial Changes In Groundwater Resources Of the Kstasupporting

confidence: 90%

Groundwater Dynamics in Transboundary Aquifers of Southern Africa

Matlala¹

2023

Sedimentary Rocks and Aquifers - New Insights

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Groundwater resources are indispensable not only in water scarce or water stressed countries, but globally as a dependable reservoir and an alternative resource of freshwater. This study assessed the spatio-temporal variability of groundwater resources within two of the biggest transboundary aquifers that South Africa shares with its neighbouring countries. Groundwater dynamics in the Karoo-Sedimentary Transboundary Aquifer (KSTA) as well as the Stampriet Transboundary Aquifer System (STAS) were studied over a period of 72 years from 1948-2020. The study explored the use of historical groundwater storage data acquired through the use of Remote Sensing (RS) techniques, coupled with the use of Geographical Information Systems (GIS) to map spatio-temporal variability in groundwater storage. Groundwater resources of the Karoo-Sedimentary Transboundary Aquifer were found to be declining over time, with an overall decline of just over 5.4 km3, whereas groundwater resources in the Stampriet remained relatively constant, with an overall increase of 0.2 km3 over the past 72 years. The results show that RS techniques coupled with GIS applications are invaluable where there is a dearth of scientific data and information, furthermore, their use in the monitoring, management and protection of groundwater resources can be applicable on the local, regional and international scales.

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Section: Spatial Changes In Groundwater Resources Of the Kstasupporting

confidence: 90%

Groundwater Dynamics in Transboundary Aquifers of Southern Africa

Matlala¹

2023

Sedimentary Rocks and Aquifers - New Insights

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“…It has been shown that an ensemble of different GRACE products is beneficial for reducing the associated uncertainties caused by signal processing (Ali et al., 2022; Sakumura et al., 2014; Yan et al., 2021). Therefore, we take a weighted average of the eight products in the spatial domain as the observed TWSAs (The signal attenuation in SH products is restored by multiplying the provided scaling factors).…”

Section: Methodsmentioning

confidence: 99%

Hydrological Droughts of 2017–2018 Explained by the Bayesian Reconstruction of GRACE(‐FO) Fields

Zhong

Forootan

et al. 2022

Water Resources Research

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Drought is an event of prolonged water shortages and usually associated with long-standing (months or even years) and devastating impacts on ecosystem, agriculture, and society (Hao et al., 2018;X. He, Estes, et al., 2019;Van Loon, 2015). To better manage these events and alleviate their impacts, it is extremely essential to understand the characteristics of historical drought events well, including their duration, intensity, affected areas, severity, and recovery process. This information is useful for developing proper water resources management policies to tackle challenges that likely occur in future (

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“…Due to the combined impacts of climate and human activities on streamflow process in large river basins, streamflow regime shifts often in complex cascading forms (Best 2019;Hughes et al, 2013). Understanding physical mechanisms by which the two drivers of changes take effect and their relative contributions on streamflow regime shift have been a hot topic for research for bolstering the management of river basin systems (Hu et al, 2021;Ali et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Quantitative assessment of the impacts of climate and human activities on streamflow of the Lancang-Mekong river over the recent decades

Li¹,

Huang

Wang³

et al. 2023

Front. Earth Sci.

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The impacts of climate and human activities exerted on streamflow over the recent decades in the Lancang-Mekong River Basin (LMRB) have been examined in separate forms and this study performed an integrated quantitative evaluation. Using the meteorological and hydrological data measured in LMRB during 1961–2015, we analyzed the varying trend and abrupt change characteristics of streamflow along the river course, and constructed a SWAT hydrological model to quantitatively evaluate the contributions of climate and human activities by taking into account their spatial heterogeneity. At the yearly timescale, the results show that for significant complex changes in streamflow along the Lancang-Mekong River, the ratios of the contributions of the impacts of human activity (ηh) before 2000 to those after 2000 are under 15.2%, 17.5% and 32.4% respectively in the source area above Jiuzou (China), the upper area between Jiuzhou and Yunjinghong (China), and the middle area between Jiuzhou and Vientiane (Laos). In the lower area between Vientiane and Stung Treng (Cambodia), ηh was only 22.6% before 2000 and yet dramatically increased to 59.1% after 2000. While the same situation happened at the seasonal time scale, ηh has relatively larger values during dry seasons than in wet seasons. In contrast to the gradually increased impacts of human activities, the impacts of climate on streamflow gradually decreased from the upper to the lower areas. Furthermore, the impacts of the changes in land use types account for about 1/3 in the Lancang River Basin and yet reaches more than 1/2 in the Mekong River Basin.

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Estimation of spatio-temporal groundwater storage variations in the Lower Transboundary Indus Basin using GRACE satellite

Cited by 54 publications

References 72 publications

Groundwater Dynamics in Transboundary Aquifers of Southern Africa

Groundwater Dynamics in Transboundary Aquifers of Southern Africa

Hydrological Droughts of 2017–2018 Explained by the Bayesian Reconstruction of GRACE(‐FO) Fields

Quantitative assessment of the impacts of climate and human activities on streamflow of the Lancang-Mekong river over the recent decades

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