Hydro-geophysical and geochemical investigation of shallow and deep Neogene aquifer systems in Hajeb Layoun-Jilma-Ouled Asker area, Central Tunisia

In 1892, the French resident general in Tunisia launched the first state-sponsored colonization effort in the Tunisian protectorate. Based on Paul Bourde’s study of ancient Roman agriculture, the colonization plan explicitly sought to remake Roman prosperity in central Tunisia by fostering the cultivation of olives. Examining Bourde’s study of the ancient past and his work as director of agriculture in Tunisia, this article explores the connections between the study of the Roman Empire and the development of colonialism in North Africa. In tracing this history, this article highlights how the study and use of Roman ruins in French Tunisia inspired an appreciation for the role that technology and material development played in supporting the spread of Roman civilization and culture.

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Fades associations and geometry of nummulite bodies : example of the Kesra in Central Tunisia (NW Kairouan)

Géologie Méditerranéenne ◽

10.3406/geolm.2001.1699 ◽

2001 ◽

Vol 28 (1) ◽

pp. 103-106 ◽

Cited By ~ 1

Author(s):

S. Jorry ◽

Bruno Caline ◽

Eric Davaud

Keyword(s):

Central Tunisia

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Fluoride Accumulation in Groundwater from Semi-arid Part of Deccan Volcanic Province, India: A Cause of Urolithiasis Outbreak

10.21523/gcj3.17010102 ◽

2017 ◽

Vol 1 (1) ◽

pp. 9-17 ◽

Cited By ~ 6

Author(s):

Sanjay Kale ◽

N. J. Pawar

Keyword(s):

Medical Records ◽

Fluoride Concentration ◽

Data Generation ◽

Deccan Volcanic Province ◽

Temporal And Spatial Distribution ◽

Volcanic Province ◽

Fluoride Accumulation ◽

Hot Days ◽

Geochemical Investigation ◽

Relationship Of

Groundwater fluoride and health problem was meticulously studied for dental and skeleton fluorosis except few studies on urolithiasis. Urolithiasis is multi-factorial disease and excess fluoride consumption is one of the causal factors. In view of this, increase of fluoride in groundwater is reported in semiarid Deccan Volcanic Province (DVP), India. To understand the fluoride and urolithiasis association, present study was carried out in Karha river basin of DVP region. Three stages of data generation were adopted for present study such as procuring of medical records of urolithiasis, previous groundwater chemistry data and geochemical investigation of 50 groundwater samples from representative villages. Further, these variables were used for correlation analysis, temporal and spatial distribution to find out their relationships. Result shows medical records of hospitals indicating the gradual increase in urolithiasis is reported during drought situations. In temporal variation, annual fluoride concentration of groundwater and hot days are positively correlated with annual urolith patients as well as spatial study supports the same. In conclusion, present study highlights the relationship of urolith formation with number of hot days, groundwater electrical conductivity and fluoride. However, detailed biomedical study may lead towards understanding of fluoride- urolithiasis relationship.

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A Method of Calculating the Hydraulic Properties of Leaky Aquifer Systems

Hydrology Research ◽

10.2166/nh.1977.0006 ◽

1977 ◽

Vol 8 (2) ◽

pp. 65-82 ◽

Cited By ~ 4

Author(s):

Gunnar Gustafson

Keyword(s):

Hydraulic Properties ◽

Short Description ◽

Aquifer Systems ◽

Leaky Aquifer

This paper describes a method for calculating the hydraulic properties of esker aquifers where a leakage to the aquifer is induced by pumping. The method is an extension of the channel method described in an earlier paper. As an example of the applicability of the method a short description of a performed pumptest is given.

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The Distribution of Volatile Organics in a Leachate Plume, Gloucester, Ontario

Water Quality Research Journal ◽

10.2166/wqrj.1987.004 ◽

1987 ◽

Vol 22 (1) ◽

pp. 49-64 ◽

Cited By ~ 1

Author(s):

J.F. Devlin ◽

W.A. Gorman

Keyword(s):

Organic Contaminants ◽

Source Area ◽

Unconfined Aquifer ◽

High Concentration ◽

Organic Contamination ◽

Aquifer System ◽

Aquifer Systems ◽

Volatile Organic ◽

Volatile Organic Contaminants ◽

Aquifer Sediments

Abstract The Gloucester Landfill is located near Ottawa, Ontario, on a northeast trending ridge of Quaternary age. The ridge comprises outwash sediments which make up two aquifer systems. A confined system exists next to bedrock, and is overlain by a silty-clayey stratum (the confining layer) which is, in turn, overlain by an unconfined aquifer system. Two independent volatile organic plumes have previously been identified at the landfill: the southeast plume, which has penetrated the confined aquifer system, and the northeast plume which is migrating in the unconfined aquifer. The distribution of volatile organic contaminants at the northeast plume site appears to be a function of two factors: (1) heterogeneities in the aquifer sediments are causing the channeling of contaminants through a narrow path; (2) the low fraction of organic carbon in the unconfined aquifer sediments at the northeast site is resulting in little retardation of the contaminants there, relative to those at the southeast site. Acetate was the only volatile fatty acid detected in the leachate. It was measurable only in areas where the volatile organic contamination was significant. Although methane was detected in the contaminated sediments, suggesting that microbial activity was present, the high concentration of acetate (>1000 ppm) which was detected down-gradient from the source area indicates that any biodegradation which is occurring is proceeding at a very slow rate.

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