scholarly journals Evaluation of Analytical Methods to Study Aquifer Properties with Pumping Test in Deccan Basalt Region of the Morna River Basin in Akola District of Maharashtra in India

2020 ◽  
Author(s):  
Kanak N. Moharir ◽  
Chaitanya B. Pande ◽  
Sudhir Kumar Singh ◽  
Rodrigo Abarca Del Rio
Keyword(s):  
River Basin ◽  
Analytical Methods ◽  
Pumping Test ◽  
Deccan Basalt ◽  
Aquifer Properties

Feasibility of Monitoring Hydraulic Connections between Aquifers Using Time-lapse TEM: A Case History in Inner Mongolia, China

2019 ◽  
Vol 24 (3) ◽  
pp. 361-372
Author(s):  
Kang Chen ◽  
Junyan Zhang ◽  
Guoqiang Xue ◽  
Hao Huang ◽  
Weiying Chen ◽  
...  
Keyword(s):  
Case History ◽  
Inner Mongolia ◽  
Electromotive Force ◽  
Time Lapse ◽  
Pumping Test ◽  
Pumping Tests ◽  
Transient Electromagnetic ◽  
Successful Case ◽  
Aquifer Properties ◽  
Hydrogeological Data

Hydraulic connections between aquifers is usually studied through hydrochemical analysis or by pumping tests. However, hydrochemical analyses are usually conducted in areas of variable lithology. In addition, the hydrogeological data obtained by drilling and pumping tests are typically insufficient to get 3D distributions of hydraulic head. In this paper, the time-lapse transient electromagnetic method (TEM) is used to image groundwater migration between aquifers in Inner Mongolia, China. First, 1D geophysical models of aquifers are generalized according to the hydrogeological conditions of the region, and the feasibility of detecting the multiple aquifers by TEM is analyzed and discussed. Then, the 2D models of aquifers pre- and post- pumping test are established based on the distribution of groundwater in the aquifers, and the variation law of induced electromotive force measured on the surface is analyzed. The simulation results show that significant time-lapse electromagnetic anomalies can be observed between pre- and post- pumping test and the variation in the induced electromotive force reaches a distinguishable level between 0.7 ms and 100 ms due to the vertical change in the aquifer properties. Furthermore, the electromagnetic variation generated by hydraulic connection between aquifers is greater than 30% within the range of 3/4 of the transmitting loop. Finally, a successful case history to map hydraulic connections between aquifers is conducted using a time-lapse TEM pre- and post- a pumping experiment. This simulation and field experiment shows that time-lapse TEM could characterize and monitor the groundwater migration more effectively than pump tests or hydrogeochemical methods alone.

scholarly journals Assessment of shallow groundwater on the bank of the ISTN lake through lakebank filtration based on aquifer properties, pH, total dissolved solids (TDS), and microbiological analysis

2019 ◽  
Vol 276 ◽  
pp. 04011
Author(s):  
Syafalni Syafalni ◽  
Wawan Kuswaya ◽  
Wahyudi Marsiano ◽  
Dian Zulkafli
Keyword(s):  
Microbial Population ◽  
Groundwater Resources ◽  
Shallow Groundwater ◽  
Pumping Test ◽  
Total Dissolved Solids ◽  
Single Line ◽  
Microbiological Analysis ◽  
Test Results ◽  
Aquifer Properties ◽  
Normal Storage

A lakebank filtration assessment was carried out on the shallow groundwater surrounding the ISTN lake to evaluate of the shallow groundwater resources in the area. The objective of this research is to describe the shallow groundwater characteristics based on aquifer properties, pH, TDS and microbiological analysis. This research was conducted by making boreholes and observation holes at the bank of the ISTN area for 3 points in a single line perpendicular to the Lakebank together with 3 points in a single line perpendicular to the canalbank for doing the experiments and taking samples for pH, TDS, and microbiology analysis. Based on aquifer properties using boring and pumping test results, the aquifer layer with a thikness around 4 m show the normal storage coefficients between 0.00026 and 0.0316. From the pH, TDS, and microbiological analysis for sampling taken from boring 2.1, 2.2., and 2.3 with the distance around 10, 20, 30 m from the lake boundary were found in range of fresh water with zero patogent microbial population but the pH of some samples was lower than the pH of drinking water requirement in which that should be improved by using simple treatment before consumption.

PUMPING TESTS AND HYDROGEOLOGICAL INVESTIGATIONS OF AN ARTESIAN AQUIFER NEAR HORSENS, DENMARK

1970 ◽  
Vol 1 (2) ◽  
pp. 69-110 ◽  
Author(s):  
L. J. ANDERSEN ◽  
Z. HAMAN
Keyword(s):  
Steady State ◽  
Pumping Test ◽  
Bearing Material ◽  
Clay Deposits ◽  
Glacial Outwash ◽  
Barometric Efficiency ◽  
Artesian Aquifer ◽  
Boulder Clay ◽  
Aquifer Properties ◽  
Lake Deposits

In the Egebjerg area, near Horsens, several aquifers consisting of glacial outwash material deposited in a glacial eroded buried valley in the Tertiary formation have been encountered. The lowest of these, which is the main productive aquifer, and which has leaky artesian conditions, has been investigated. The thickness of this aquifer varies from 10-40 m. The lower confining bed consists of boulder clay or meltwater clay underlain by boulder clay. The upper confining bed, where leakage occurs, consists of meltwater clay with thickness from 0 to 5 m. The upper meltwater deposits include a sequence of interglacial lake deposits and several layers or laminae of clay, which separate this water-bearing material into more aquifers with watertable or artesian conditions. In the eastern part of the area boulder clay deposits are found at the top of the sequence. The Theis modified non-equilibrium equation and its derived formula for the non-steady-state leaky artesian case have been used to determine aquifer properties from pumping test data. By means of Jacob's method and a logarithmic method, well characteristics are determined graphically. Barometric efficiency, reverse fluctuations, and boundary conditions are recorded and discussed.

scholarly journals Nye metoder for prøvepumpning af boringer og grundvandsreservoirer

1970 ◽  
Vol 38 ◽  
pp. 1-91
Author(s):  
Lars Jørgen Andersen ◽  
Zvonimir Harnan
Keyword(s):  
Ground Water ◽  
Analytical Methods ◽  
Quantitative Methods ◽  
Pumping Test ◽  
Graphical Analysis ◽  
Practical Application ◽  
Pumping Tests ◽  
Type Curves ◽  
Actual Field ◽  
Increasing Demand

The purpose of this paper is to introduce the practical application of selected quantitative and analytical methods for testing wells and evaluation of aquifers to engineers and geologists within the field of groundwater hydrology in the Nordic countries. This abstract, a list of symbols and units and text of figures and tables in English may possibly provide understanding of the used formulas and methods for readers not familiar with Danish.The increasing demand for ground water and the need for optimal utilization of aquifers accelerate the use of quantitative methods for predictions of available quantities of ground water and aquifer response on withdrawal.The first part of this paper gives a short introduction into the developed theory for analysing drawdown data from pumping tests and a number of selected formulas in their developed form for determining the hydraulic properties of wells (B, C and n), aquifers, (T and S) and confining bed (P'). Selected hydrogeological terms are defined. The procedure of pumping and the frequency of waterlevel observations in space and time is briefly mentioned both for step-drawdown test and pumping test with constant capacity.Formulas for adjustments of drawdown- and recovery data for barometric efficiency and decrease of saturated thickness are described. Examples of logarithmic and semilogarithmic plots of data are given together with type curves for leaky artesian and watertable conditions.Principles and formulas for prediction of the future drawdown in pumped wells and aquifers are outlined.The second part of the paper gives the practical application of the selected analytical methods and formulas. Illustrative examples with actual field data collected by the Hydrogeological Department, Geological Survey of Denmark, are presented for each method discussed. Basic data as well drawdown as recovery from 4 pumping tests and their numerical and graphical analysis a represented in 27 figures and 16 tables.

Stereo modeling of HVEM specimens by serial tilting and computer graphics

1986 ◽  
Vol 44 ◽  
pp. 34-35
Author(s):  
J.R. McIntosh ◽  
D.L. Stemple ◽  
William Bishop ◽  
G.W. Hannaway
Keyword(s):  
Computer Graphics ◽  
Analytical Methods ◽  
Photographic Film ◽  
Complex Structures ◽  
Multiple Objects ◽  
Multiple Images ◽  
3 Dimensional

EM specimens often contain 3-dimensional information that is lost during micrography on a single photographic film. Two images of one specimen at appropriate orientations give a stereo view, but complex structures composed of multiple objects of graded density that superimpose in each projection are often difficult to decipher in stereo. Several analytical methods for 3-D reconstruction from multiple images of a serially tilted specimen are available, but they are all time-consuming and computationally intense.

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