نتایج جستجو برای: groundwater fluctuation

تعداد نتایج: 54428  

Journal: :Ecological applications : a publication of the Ecological Society of America 2008
J J Follstad Shah C N Dahm

Flow regulation has reduced the exchange of water, energy, and materials between rivers and floodplains, caused declines in native plant populations, and advanced the spread of nonnative plants. Naturalized flow regimes are regarded as a means to restore degraded riparian areas. We examined the effects of flood regime (short [SIFI] vs. long [LIFI] inter-flood interval) on plant community and so...

Journal: :Journal of Chemistry 2023

The possible zones of submarine groundwater discharge (SGD) and seawater intrusion (SWI) along the west coast Kanyakumari in southernmost Indian Peninsula were identified by integrating surface temperature anomaly, water table fluctuation, quality analysis. Temperature map sea from Landsat 8 satellite data, which helped to demarcate SGD areas with significant thermal contrast, exists between di...

1999
Jiu Jimmy Jiao Zhonghua Tang

An analytical solution is derived to investigate the influence of leakage on tidal response in a coastal leaky confined aquifer system. The analytical solution developed here is more general than the traditional solution obtained by Ferris [1951], which can be regarded as a special case of the solution presented in this paper. This solution is based on a conceptual model under the assumption th...

Journal: :Hydrology and Earth System Sciences 2021

Abstract. Groundwater table dynamics extensively modify the volume of hyporheic zone and rate exchange processes. Understanding effects daily groundwater fluctuations on tightly coupled flow heat transport within zones is crucial for water resources management. With this aim in mind, a physically based model used to explore responses varying fluctuation scenarios. The different timing amplitude...

2004
Jiu J. Jiao Hailong Li

[1] Tide-induced variations in subsurface air pressure, mainly between 1.0 to 2.0 kPa, are observed in coastal areas in Hong Kong. A two-dimensional model which couples the two-phase air-water flow in unsaturated and saturated zones successfully reproduces the observed air pressure under no rain conditions. The simulation reveals that significant increases in air pressure depend on the tidal ra...

Journal: :Water 2021

Managed aquifer recharge operations are often conducted in near-bank areas to regulate water resources or reduce seawater intrusion. Yet little is known about the influence of surface level fluctuations at different temporal scales on MAR performance. A generalized conceptual model was developed based an investigation site Western China as a basis simulate response table, artificially recharged...

Journal: :International Journal of Current Microbiology and Applied Sciences 2018

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