scholarly journals Comprehensive Geohydrological Study of Consolidated Sedimentary Rocks in Bornholm

1977 ◽  
Vol 8 (2) ◽  
pp. 117-128
Author(s):  
Tage Sørensen ◽  
Hans Ole Hansen
Keyword(s):  
Groundwater Pollution ◽  
Hydraulic Properties ◽  
General Procedure ◽  
Sedimentary Rocks ◽  
Well Logging ◽  
Pumping Test ◽  
Test Evaluation ◽  
Aquifer System ◽  
Aquifer Systems

Problems and procedures conserning planning and execution of geohydrological investigations of aquifer systems composed of consolidated sedimentary rocks are discussed. The discussion is illustrated by investigations in an area on the island of Bornholm, Denmark, where the aquifer system is composed of inclined and faulted beds of sand-, silt-and claystone. The investigations includes the following elements:Hydrogeological mapping.Geophysical investigations and well-logging (gamma-, resistivity-, flow- and conductivity-log).Pumping-test Evaluation of hydraulic properties of the aquifers. Construction of mathematical model.Deliniation of infiltration areas and evaluation of potential infiltration. Protection against groundwater-pollution. The paper emphasises the general procedure for engineering geohydrological investigations of consolidated sedimentary rocks and the correlation of the information collected by different methods.

scholarly journals Hydraulic and Groundwater Chemical Parameters of the Aquifer in Malakasari, Bandung

2018 ◽  
Vol 147 ◽  
pp. 03007
Author(s):  
Jemi S. Ahnaf ◽  
Zufialdi Zakaria ◽  
Aton Patonah
Keyword(s):  
Hydraulic Properties ◽  
Sedimentary Rocks ◽  
Pumping Test ◽  
Coarse Sand ◽  
Observation Data ◽  
Chemical Parameters ◽  
Specific Storage ◽  
Chemical Parameter ◽  
Total Dissolved Solid ◽  
Feasibility Test

In order to reveal the physical condition of the aquifer, the pumping test using Cooper-Jacob (1946) principle has conducted at well SM5. The observation data of the test then processed to generate various value of hydraulic properties i.e. 3.241x10-4 cm2/sec for transmissivity (T), 8.103x10-6 cm/sec for conductivity (K), 0.05055 for storativity (S), and 3.852x10-3 ft-1 for specific storage (Ss). These data show that the aquifer composed of unconsolidated sedimentary rocks ranged from coarse sand to silt. In addition, also performed the feasibility test of groundwater by using Multimeter which produces chemical parameter data. The chemical parameter of eight well samples have average values of 6.62, 766.25 μs/cm and 376.25 mg/L for pH, electric conductivity (EC), and total dissolved solid (TDS) respectively, while physical observation shows no turbidity and odor.

scholarly journals Sustainability and Conceptual Groundwater Hydraulic Models of Basement Aquifers

2019 ◽  
Vol 66 (2) ◽  
pp. 87-98
Author(s):  
Olanrewaju Akinfemiwa Akanbi ◽  
Moshood ‘Niyi Tijani
Keyword(s):  
Groundwater Flow ◽  
Hydraulic Properties ◽  
Groundwater Discharge ◽  
Pumping Test ◽  
Hydraulic Models ◽  
Aquifer Systems ◽  
Basement Aquifers

AbstractGroundwater flow of the basement terrains of the Ibarapa region was studied by carrying out pumping test and measurement of borehole inventory. The view was to identify the associated aquifer systems from the time-drawdown curves, quantify the estimable hydraulic properties and develop hypothetical models for the understanding of the groundwater flow in the area underlain by diverse crystalline bedrocks. Three aquifer types were identified namely, dual, leaky and regolith. The yield of groundwater in dual and leaky aquifers that dominated terrains underlain by amphibolite and gneisses was sustainable, but the discharge of regolith aquifers mainly associated with migmatite and granite terrains declined at late pumping stage. The transmissivities of the dual and leaky aquifers were between 2.02 and 11.65 m2/day, while those of regolith aquifers were mostly less than 1.00 m2/day. The average aquifer transmissivities in m2/day by bedrocks were: 6.85, 2.57, 0.76 and 1.72, correspondingly. The inter-relationships between transmissivities and groundwater discharge showed diverse aquifer representations, from sustainable high-yielding to unsustainable low-yielding types. Conscientious effort is, therefore, required for well construction in the area.

Summary of hydraulic properties of the Floridan Aquifer system in coastal Georgia and adjacent parts of South Carolina and Florida

2005 ◽  
Author(s):  
John S. Clarke ◽  
David C. Leeth ◽  
DaVette Taylor-Harris ◽  
Jaime A. Painter ◽  
James L. Labowski
Keyword(s):  
South Carolina ◽  
Hydraulic Properties ◽  
Aquifer System ◽  
Floridan Aquifer

A Method of Calculating the Hydraulic Properties of Leaky Aquifer Systems

1977 ◽  
Vol 8 (2) ◽  
pp. 65-82 ◽  
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.

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

1987 ◽  
Vol 22 (1) ◽  
pp. 49-64 ◽  
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.

The Migration Behaviour of Transuranium Elements in Gorleben Aquifer Systems: Colloid Generation and Retention Process

1988 ◽  
Vol 127 ◽  
Author(s):  
J. I. Kim ◽  
G. Buckau ◽  
H. Rommel ◽  
B. Sohnius
Keyword(s):  
Migration Process ◽  
Transuranium Elements ◽  
Aquifer System ◽  
Migration Behaviour ◽  
Aquifer Systems ◽  
Migration Study

ABSTRACTThe colloid generation as a part of the migration process of trans-uranic ions has been studied in the Gorlben aquifer system. From the migration study for the Gorleben repository site, typical examples are selected to demonstrate the influence of colloids. The quantification of colloid generation and its influence on the dissolution and geochemical sorption of transuranium elements are discussed.

Pumping Test Evaluation of Stream Depletion Parameters

Ground Water ◽  
2006 ◽  
Vol 44 (4) ◽  
pp. 540-546 ◽  
Author(s):  
Hilary K. Lough ◽  
Bruce Hunt
Keyword(s):  
Pumping Test ◽  
Test Evaluation ◽  
Stream Depletion

scholarly journals Hydrogeological Conditions of Qazaniyah Sub-basin in Diyala / Iraq

2021 ◽  
pp. 3921-3931
Author(s):  
Zahraa. M. Muhsin ◽  
Qusai .Y. Al-Kubaisi
Keyword(s):  
Hydraulic Properties ◽  
Specific Capacity ◽  
Sedimentary Rocks ◽  
Storage Coefficient ◽  
Hydrogeological Conditions ◽  
And Storage

The study area is located in the eastern part of the Diyala Governorate close to the Iraqi-Iranian border. This study was set to investigate the hydrogeological calculations of northeast of Qazaniyah wells where the groundwater moves in directions of from the northeastern parts towards the southwestern par, that is, the same direction of the topography and the same direction of the tendency of the layers t. The study‘s region is characterized by visible geological layers or those that can be penetrated to a reasonable depth by wells which are sedimentary rocks deposited in continental or semi-continental conditions in the bays. From the study of the hydraulic properties of the two hydrogeological and exemplary systems, the values of transmissivity, permeability and storage coefficient are ranged between 1.94- 5.73 m2/day, 1.02- 3.92 m/day and1.40 x 10-5- 2.62 x 10-4, respectively. While the estimated value of transmissivities, which are obtained from specific capacity, ranged between 6.27- 8.62 m2/day. This variance in the values indicates the broad differences in the values Lithology of aquifers, which seems to be influenced by the strength and the number of fractures and joints.

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