Multiscale hydraulic conductivity characterization in a fractured granitic aquifer: the evaluation of scale effect

2021 ◽  
Author(s):  
Shuangpo Ren ◽  
Ye Zhang ◽  
Tian‐Chyi Jim Yeh ◽  
Yuli Wang ◽  
Bradley J. Carr
Keyword(s):  
Hydraulic Conductivity ◽  
Scale Effect ◽  
Granitic Aquifer

Evaluating the hydraulic conductivity at three different scales within an unconfined sand aquifer at Lachenaie, Quebec

2005 ◽  
Vol 42 (4) ◽  
pp. 1212-1220 ◽  
Author(s):  
Robert P Chapuis ◽  
Véronique Dallaire ◽  
Denis Marcotte ◽  
Michel Chouteau ◽  
Nelson Acevedo ◽  
...  
Keyword(s):  
Hydraulic Conductivity ◽  
Scale Effect ◽  
Large Scale ◽  
Scale Effects ◽  
Pumping Test ◽  
Field Variable ◽  
Small Scale ◽  
Sand Aquifer ◽  
Variable Head ◽  
A Site

This paper presents the evaluation of scale effects for the hydraulic conductivity, k, of a sand. Data were obtained using several methods at a site that was densely instrumented with piezometers within an area of about 100 m × 100 m. The 3.1–3.6 m thick sand deposit rests on a thick, nonfissured Champlain Sea clay deposit. At the small scale, local k values were obtained from the grain-size curves of sand samples and also from ground-penetrating radar surveys. At the intermediate scale, k values were obtained from field variable-head tests using piezometers. At the large scale, k values were obtained from pumping-test drawdowns in steady-state conditions. In this sand aquifer, the careful evaluations at three scales gave similar narrow distributions for the hydraulic conductivity, and therefore no scale effect is evidenced.Key words: hydraulic conductivity, sand, scale effect, gradation, monitoring well, pumping.

Plant hydraulic conductivity determines photosynthesis in rice under PEG-induced drought stress

2020 ◽  
Vol 53 (2) ◽  
Author(s):  
Guanglong Zhu ◽  
Lifeng Gu ◽  
Yu Shi ◽  
Huize Chen ◽  
Yuqian Liu ◽  
...  
Keyword(s):  
Drought Stress ◽  
Hydraulic Conductivity ◽  
Plant Hydraulic Conductivity
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