نتایج جستجو برای: ground water table

تعداد نتایج: 785611  

Journal: :Ecological Questions 2023

The dwindling ground water level is one of the critical issues that plague India in present times. This research study primarily has its basis secondary data, gathered from Ministry Water Resources. main aim to highlight related various parts with focus on southern part Haryana state. spatial pattern depth studied using data sources. table and fluctuation maps Arch GIS 9.3 are analysed by makin...

Journal: :desert 2013
gh.r. zehtabian m.k. kianian a. salehpour jam

playas are low-lands which is considered to be the locations of accumulation of superficial and ground waters fromhigher elevations and these waters have different types of salts and various salinity level. therefore, because of lack ofrainfall and fresh-water both for human and animal useage or even for plants, it is needed to apply proper methods toharvest fresh water from these saline-waters...

Journal: :Ground water 2007
Haipeng Guo Jiu Jimmy Jiao

Land reclamation in coastal areas may have a significant effect on local ground water systems. Steady-state analytic solutions based on Dupuit and Ghyben-Herzberg assumptions are derived to evaluate this effect. Two situations are considered, both with ground water flow resulting from precipitation recharge: the coastal aquifer of an extensive landmass and an island. The results show that after...

Journal: Desert 2012
A. Salehpour Jam Gh.R. Zehtabian M.K. Kianian

Playas are low-lands which is considered to be the locations of accumulation of superficial and ground waters fromhigher elevations and these waters have different types of salts and various salinity level. Therefore, because of lack ofrainfall and fresh-water both for human and animal useage or even for plants, it is needed to apply proper methods toharvest fresh water from these saline-waters...

1999
Amr W. Sadek Hesham Ghoneim Mustafa Mossad

The present paper reports the implementation of a neural network technique to predict ground settlement as occasioned by dewatering activities of a long-term large-scale drainage project. The objective of the project is to lower and maintain the level of the ground water table in urban areas through a system of a non-stop pumping wells whose layout and operation rate are determined and implemen...

2016
Yongchul Shin Kyoung Jae Lim Kyungwon Park Younghun Jung Jian Peng

Several inversion modeling-based approaches have been developed/used to extract soil hydraulic properties (α, n, θres, θsat, Ksat) from remotely sensed (RS) soil moisture footprints. Hydrological models with shallow ground water (SGW) table depths in soils simulate daily root zone soil moisture dynamics based on the extracted soil parameters. The presence of SGW table depths in soils significan...

Journal: :Ground water 2005
Henk M Haitjema Sherry Mitchell-Bruker

The water table in unconfined aquifers is often believed to be a subdued replica of the topography or land surface. However, this assumption has not been widely tested and in some cases has been found to be in error. An analysis of ground water rise in regional unconfined aquifers, using both a two-dimensional boundary element model and a one-dimensional Dupuit-Forchheimer model, reveals the co...

2010
Evan S. Kane Merritt R. Turetsky Jennifer W. Harden A. David McGuire James M. Waddington

[1] Boreal wetland carbon cycling is vulnerable to climate change in part because hydrology and the extent of frozen ground have strong influences on plant and microbial functions. We examined the response of dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) across an experimental manipulation of water table position (both raised and lowered water table treatments) in a boreal‐r...

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