Results 81 to 90 of about 59,035 (248)

Numerical modelling in support of a conceptual model for groundwater flow and geochemical evolution in the southern Outaouais Region, Quebec, Canada [PDF]

, 2017
A two-dimensional vertical-section numerical model for groundwater flow and transport using age, tritium and chloride was used to help validate a conceptual model of geochemical evolution within a representative regional-scale hydrogeological system in ...
Lemieux, Jean-Michel, Molson, John, Montcoudiol, Nelly   +2 more
core   +1 more source

A Tool for Prioritizing Gravel Augmentation Reaches for Sediment Starved Rivers

River Research and Applications, EarlyView.
ABSTRACT Gravel augmentation is a widely used restoration technique used to improve habitat below dams, including salmonids spawning habitat. However, gravel augmentation can be cost‐prohibitive, and it is often unclear which stream segments have the highest potential to benefit spawning salmonids.
Patricia J. Wohner, Peter A. Samarin, James T. Peterson   +2 more
wiley   +1 more source

Productivity zoning and petrophysical assessment in the Munich metropolitan area for hydro-geothermal utilization using multivariate methods

Geothermal Energy
The North Alpine Foreland Basin in Bavaria is one of Europe’s most important deep reservoirs for hydrogeothermal energy utilization for district heating.
Felix Schölderle, Daniela Pfrang, Valerie Ernst, Theis Winter, Kai Zosseder   +4 more
doaj   +1 more source

Transfer function-noise modeling and spatial interpolation to evaluate the risk of extreme (shallow) water-table levels in the Brazilian Cerrados [PDF]

Water regimes in the Brazilian Cerrados are sensitive to climatological disturbances and human intervention. The risk that critical water-table levels are exceeded over long periods of time can be estimated by applying stochastic methods in modeling the ...
Asmuth, J.R., von, Camara, G., Heuvelink, G.B.M., Knotters, M., Manzione, R.L.   +4 more
core   +2 more sources

Development and Assessment of Fluorescent‐Dyed, Preserved Invasive Grass Carp (Ctenopharyngodon idella) Eggs as Surrogates for Live Eggs in Transport and Dispersal Control Experiments

River Research and Applications, EarlyView.
ABSTRACT Invasive species such as grass carp (Ctenopharyngodon idella) pose substantial ecological threats to North American freshwater ecosystems. Understanding their early life stage behavior is critical for management efforts. From spawning to hatching, invasive carp eggs must remain suspended in the water column while drifting downstream for the ...
Henry F. Doyle, Benjamin H. Stahlschmidt, Anne M. Herndon, Vindhyawasini Prasad, Amy E. George, Jesse R. Fischer, P. Ryan Jackson, Cory D. Suski, Rafael O. Tinoco   +8 more
wiley   +1 more source

Scientific divers quantify first known outbreaks of cold-water coral disease [PDF]

, 2009
Coral diseases are widely reported in the tropics but the first incidence of cold-water coral disease was not noted until 2002 when divers recorded an outbreak at 10-28 m depth off Lundy in a NE Atlantic marine protected area.
Hall-Spencer, J, Hiscock, K, Munn, C
core  

Groundwater resource modelling for public water supply management in London [PDF]

, 2012
In London, groundwater abstractions for public supply are predominantly from the Chalk aquifer. However, water resource pressures put existing abstractions at risk and often require complex analysis to support new source development.
Hughes, A.G., Jackson, C.R., Jones, M.A., van Wonderen, J.J.   +3 more
core   +1 more source

Inter‐Annual Variation in Alpha and Beta Diversity of Benthic Macroinvertebrate Communities in Agricultural Ditches

River Research and Applications, EarlyView.
ABSTRACT Ditches are essential elements of the agricultural landscape because of their role as habitat or refuge for aquatic species, especially in homogenized and intensively cultivated areas. However, data on the biodiversity associated with agricultural ditches, and its variation over time, are underrepresented in ecological research.
Michela Rappocciolo, Martina Chiorino, Elide Sgarella, Davide Solazzo, Cristina Spreafico, Alberto Doretto   +5 more
wiley   +1 more source

Using Fine Sediment Monitoring to Quantify Sand Loading Over Time

River Research and Applications, EarlyView.
ABSTRACT Riverine sand loading can lead to geomorphic change, impacting river processes like lateral migration and vertical aggradation or degradation. Yet many sediment monitoring programs track only fine sediment measurable as total suspended solids (TSS). Here, we assess the ability for TSS data to be used to determine sand loading.
Andrew P. Kasun, Karen B. Gran
wiley   +1 more source

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