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SHALLOW GROUNDWATER [6 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2021-07-14

English

Subject field(s)
  • Hydrology and Hydrography
  • Geology
CONT

Near-surface groundwater includes the surficial groundwater zone and the shallow bedrock groundwater zone defined by OPG [Ontario Power Generation].

French

Domaine(s)
  • Hydrologie et hydrographie
  • Géologie

Spanish

Save record 1

Record 2 2021-02-18

English

Subject field(s)
  • Hydrology and Hydrography
DEF

[A zone] where shallow groundwater and surface water mix.

French

Domaine(s)
  • Hydrologie et hydrographie
DEF

Zone peu profonde où se mêlent les eaux souterraines et l'eau de surface.

Spanish

Save record 2

Record 3 2013-04-19

English

Subject field(s)
  • Drainage and Irrigation (Agric.)
  • Hydrology and Hydrography
CONT

Dating of shallow groundwater.

French

Domaine(s)
  • Drainage et irrigation (Agriculture)
  • Hydrologie et hydrographie
OBS

Eau souterraine à faible profondeur.

Spanish

Campo(s) temático(s)
  • Drenaje y riego (Agricultura)
  • Hidrología e hidrografía
Save record 3

Record 4 2012-01-17

English

Subject field(s)
  • Waste Management
  • Nuclear Waste Materials
CONT

The simplest form of engineered trench, or shallow land burial, relies mainly on the properties of the excavated overburden and the geohydrologic properties of the site for containment. The intent is to ensure that the travel time of radionuclides from the waste to the human environment via groundwater is long compared to the nuclide half lives. Travel time is long because of low hydraulic gradients, soils of low water permeability and high contaminant adsorption, and lengthy pathways across exclusion zones.

CONT

Illustration of a shallow land burial facility (engineered trench). ... Figure 9 outlines the engineered trench option. In this option, the major characteristics are that: . wastes are placed below grade (in suitable hydrogeological conditions) in trenches having a specially prepared bottom that incorporates a drainage system; . there is an earthen cover over the wastes that easily can incorporate additional engineered barriers; . structural stability is not provided by the disposal facility; and . for structural stability, voids between the waste containers are filled with sans or earthen materials - bulk wastes may be compacted.

CONT

Shallow-land burial in trenches was the original low-level waste disposal practice at the beginning of the nuclear era. The method originally consisted in emplacing the wastes in trenches dug into the ground at depths ranging from 3 to 6 m and covering the emplaced wastes with about 1 m of soil.

CONT

Burial trenches without additional engineered barriers can be used provided that radionuclides will migrate into groundwater beneath the site at an acceptable rate.

OBS

As used in this context, the word "engineered" refers to the fact that features and materials have been designed or selected to accomplish certain functions. In shallow land burial the materials are usually natural rather than man-made.

French

Domaine(s)
  • Gestion des déchets
  • Déchets nucléaires
CONT

Des stockages par enfouissement à faible profondeur sont réalisés aux États-Unis, en Grande-Bretagne, en U.R.S.S., au Canada et en France. Dans les deux premiers pays, le stockage se fait sur des déchets pas ou peu conditionnés, dans des tranchées en pleine terre.

CONT

Stockage de surface. [...] Le stockage peut être réalisé en tranchées, mode acceptable pour des terrains argileux, si la nappe phréatique est suffisamment basse.

OBS

Voir aussi «tranchée bétonnée».

OBS

Dans ce contexte, l'adjectif «engineered» pourrait se rendre par «spécialement conçu». Voir l'observation qui se trouve dans le module anglais de la fiche.

PHR

Tranchée bétonnée (à faible profondeur, au voisinage de la surface).

PHR

Couverture de tranchée. Enfouissement, stockage dans des tranchées. Stockage en tranchées.

Spanish

Campo(s) temático(s)
  • Gestión de los desechos
  • Desechos nucleares
Save record 4

Record 5 2005-09-22

English

Subject field(s)
  • Animal Feed Processing Equipment
CONT

Cattle activate a diaphragm pump with their nose to fill a water bowl. One nose pump has the ability to water a maximum of 30 animals. The pump is capable of 7. 6 metres(25 feet) maximum lift from the source to the bowl. The units are easily installed for seasonal use. No auxiliary power is required. Material and installation costs are minimal. The nearby watercourse may be utilized as the source, or groundwater from a shallow well may be retrieved relatively easy.

Key term(s)
  • nosepump

French

Domaine(s)
  • Alimentation des animaux (Matériel)
CONT

Pompes à pacage. Avec leur nez, les bovins actionnent une pompe à diaphragme qui remplit un abreuvoir. Une seule pompe suffit à abreuver un maximum de 30 animaux. La pompe a une capacité de succion de 7,6 mètres (25 pieds) de la source à l'abreuvoir. Ces unités sont faciles à installer pour un usage saisonnier. Aucune source d'énergie auxiliaire n'est requise. Les coûts d'installation et de matériaux sont minimes. La source d'approvisionnement peut provenir d'un cours d'eau voisin. Il est également assez facile de récupérer les eaux d'un puits de surface.

Spanish

Save record 5

Record 6 1996-03-18

English

Subject field(s)
  • Environmental Studies and Analyses
  • Soil Science
  • Nuclear Waste Materials
CONT

The simplest form of engineered trench, or shallow land burial, relies mainly on the properties of the excavated overburden and the geohydrologic properties of the site for containment. The intent is to ensure that the travel time of radionuclides from the waste to the human environment via groundwater is long compared to the nuclide half lives. Travel time is long because of low hydraulic gradients, soils of low water permeability and high contaminant adsorption, and lengthy pathways across exclusion zones.

French

Domaine(s)
  • Études et analyses environnementales
  • Science du sol
  • Déchets nucléaires
OBS

«adsorption» : Phénomène par lequel des solides, pulvérulents ou poreux, des solutions retiennent à leur surface des molécules, des ions en phase gazeuse ou liquide.

Spanish

Campo(s) temático(s)
  • Estudios y análisis del medio ambiente
  • Ciencia del suelo
  • Desechos nucleares
Save record 6

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