Results 31 to 40 of about 133,844 (123)

Are the results of the groundwater model robust? [PDF]

open access: yesarXiv, 2019
De Graaf et al. (2019) suggest that groundwater pumping will bring 42--79\% of worldwide watersheds close to environmental exhaustion by 2050. We are skeptical of these figures due to several non-unique assumptions behind the calculation of irrigation water demands and the perfunctory exploration of the model's uncertainty space.
arxiv  

A groundwater market model [PDF]

open access: yesarXiv
We introduce the problem of groundwater trading, capturing the emergent groundwater market setups among stakeholders in a given groundwater basin. The agents optimize their production, taking into account their available water rights, the requisite water consumption, and the opportunity to trade water among themselves.
arxiv  

Statistical modeling of groundwater quality assessment in Iran using a flexible Poisson likelihood [PDF]

open access: yesarXiv, 2019
Assessing water quality and recognizing its associated risks to human health and the broader environment is undoubtedly essential. Groundwater is widely used to supply water for drinking, industry, and agriculture purposes. The groundwater quality measurements vary for different climates and various human behaviors, and consequently, their spatial ...
arxiv  

Groundwater dynamics beneath a marine ice sheet [PDF]

open access: yesarXiv
Sedimentary basins beneath many Antarctic ice streams host substantial volumes of groundwater, which can be exchanged with a "shallow" subglacial hydrological system of till and channelised water. This exchange contributes substantially to basal water budgets, which in turn modulate the flow of ice streams.
arxiv  

Can We Remove Secular Terms for Analytical Solution of Groundwater Response under Tidal Influence? [PDF]

open access: yesarXiv, 2016
This paper presents a secular term removal methodology based on the homotopy perturbation method for analytical solutions of nonlinear problems with periodic boundary condition. The analytical solution for groundwater response to tidal fluctuation in a coastal unconfined aquifer system with the vertical beach is provided as an example.
arxiv  

Integrating Boosted learning with Differential Evolution (DE) Optimizer: A Prediction of Groundwater Quality Risk Assessment in Odisha [PDF]

open access: yesarXiv
Groundwater is eventually undermined by human exercises, such as fast industrialization, urbanization, over-extraction, and contamination from agrarian and urban sources. From among the different contaminants, the presence of heavy metals like cadmium (Cd), chromium (Cr), arsenic (As), and lead (Pb) proves to have serious dangers when present in huge ...
arxiv  

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