Results 121 to 130 of about 71,442 (339)

Mobility and removal of nitrate in heterogeneous Eocene aquifers [PDF]

, 1998
n a study of the principles of lateral and vertical nitrate mobility and removal in unconfined heterogeneous fine sandy Eocene aquifers by long-term observation, no significant nitrate reduction could be observed over ...
Eppinger, Ralf, Walraevens, Kristine
core  

On the upstream mobility scheme for two-phase flow in porous media [PDF]

, 2009
When neglecting capillarity, two-phase incompressible flow in porous media is modelled as a scalar nonlinear hyperbolic conservation law. A change in the rock type results in a change of the flux function.
B Temple, DA Ross, E Kaasschieter, GM Coclite, J Jaffré, JD Towers, JD Towers, JJ Adimurthi, JJ Adimurthi, JJ Adimurthi, JJ Adimurthi, JJ Adimurthi, JJ Adimurthi, Jérôme Jaffré, K Aziz, KH Karlsen, KH Karlsen, MG Crandall, NN Kuznecov, PH Sammon, R Burger, S Diehl, S Diehl, S Godunov, S Mishra, S Mochon, Siddhartha Mishra, T Gimse, Y Brenier   +28 more
core   +12 more sources

Hydropower Operations Reduce Alluvial Nesting Habitat and Alter Riverine Turtle Population Demographics

River Research and Applications, EarlyView.
ABSTRACT Hydropower management has altered discharge regimes of large rivers worldwide, reducing sediment mobilization and early‐seral conditions essential for many riverine species. Spiny softshell turtles (Apalone spinifera) rely on alluvial habitats for nesting and may serve as sentinel species to assess the effects of regulated flow regimes and ...
Kayhan Ostovar, Larissa Saarel, Joanna‐Lynn C. Borgogna, Luke Ward, Whalen Alston, Matt Prinkki, Addison Valdez   +6 more
wiley   +1 more source

Population Dynamics of Northern Pearl Dace Margariscus nachtriebi in Anthropogenically Altered Headwater Streams of the Nebraska Sandhills Ecoregion

River Research and Applications, EarlyView.
ABSTRACT Empirical evidence of population demographic responses to environmental perturbations is a major knowledge gap for aquatic vertebrate populations. Extensive habitat alteration including channelization of headwater streams influences the habitat template on which small‐bodied fish are dependent to carry out distinct life stages and maintain or ...
Joseph Spooner, Jonathan Spurgeon
wiley   +1 more source

Assessing groundwater and soil quality in West Kazakhstan amid climate impacts and oil industry contamination risks

Scientific Reports
Climate change from anthropogenic activities had resulted in devastating disruptions in Kazakhstan. This includes drought in 2023 and flooding in 2024, with widespread water pollution. The field surveys and water-soil sampling were carried out in 2013 to
Dinara Adenova, Daniyar Sapargaliyev, Janay Sagin, Malis Absametov, Yermek Murtazin, Vladimir Smolyar   +5 more
doaj   +1 more source

Discussion on Deep Geothermal Characteristics and Exploration Prospects in the Northern Jiangsu Basin

Energies
The Northern Jiangsu Basin (NJB), located at the northeast edge of the Yangtze block, is not only rich in oil and gas resources but also contains abundant geothermal resources. Nevertheless, the distribution of geothermal resources at medium depth in the
Linyou Zhang, Shengtao Li, Wenhao Xu, Junpeng Guan, Jian Song, Yahui Yao, Zhaoxuan Niu, Li Yang   +7 more
doaj   +1 more source

Influence of geology and hydrogeology on heat rejection from residential basements in urban areas

Tunnelling and Underground Space Technology, 2019
Urbanization and limited land availability have resulted in the increased utilization of underground structures including residential basements in largely populated cities such as London, with an average addition of 200 basements per year in some ...
A. Bidarmaghz, R. Choudhary, K. Soga, H. Kessler, R. Terrington, S. Thorpe   +5 more
semanticscholar   +1 more source

Assessing Spatial Riverbed Clogging and Its Dynamics at the Reach Scale: A Coupled Approach Combining Field Measurements and 1D Hydro‐Sedimentary Numerical Modeling

River Research and Applications, EarlyView.
ABSTRACT Assessing spatial and temporal variability of clogging in gravel‐bed rivers is challenging because field methods typically rely on labor‐intensive measurements of fine‐sediment content, porosity, or hydraulic conductivity. Clogging is also highly dynamic, driven by hydro‐sedimentary conditions; yet few studies have examined it at large scales ...
D. Hernandez, B. Camenen, A. Bonnefoy
wiley   +1 more source

Characteristics and mechanisms of fluorine enrichment in the geothermal water of south central Shandong Province

地质科技通报
Objective Yishu fault zone geothermal field and central Shandong uplift geothermal field are typical geothermal fields in south central Shandong Province.
Man LI, Wei ZHANG, Yuzhong LIAO, Feng LIU, Shuaichao WEI, Yujiang HE   +5 more
doaj   +1 more source

Preface: Geostatistics and hydrogeology

Hydrogeology Journal, 2023
P. Renard, J. Gómez-Hernández, M. Schafmeister, E. Varouchakis   +3 more
semanticscholar   +1 more source