IOSR-JAGG   Volume-7 ~ Issue-6 ~ Nov. – Dec. 2019

Abstract: This work was carried out with the objective of assisting in the construction of a water supply system inside Nova Vida Farm, located in the city of Paruapebas, southeast of the state of Pará, Brazil. The farm is divided into areas for the cultivation of various crops, such as corn, beans, and soybeans, as well as in beef cattle breeding, in confinement, export destination. However, in the dry season, with its insipid supply system, consisting of shallow artesian wells and cisterns for water storage. Based on this, a geophysical study of hydrogeological characterization was carried out, using the measurements of two Vertical Electrical Survey (VES) and 6 electromagnetic profiles with the Slingram system using 8 frequencies (110, 220, 440, 880, 1760, 3520, 7040 and 14080 Hz), where the results are presented in the form of graphs for two VES and in isocontours maps for the profiles by locating and identifying the most promising locations for new wells allocation, which can mean the solution for the management of the supply of water the farm.

Keywords : Water Supply; Hydrogeological Characterization; Geophysical Survey.

Abstract: Surface water is one of the most important sources for drinking and agricultural purpose in many parts of the world. The unsuitability of surface water is often caused due to the contamination by inherent toxicity of rocks. Surface water contains many necessary ions like sodium, potassium, calcium, magnesium, chloride, sulphate, bicarbonate and fluoride the concentration of which has considerable effect on surface water quality if exceeding the permissible limits. However, the consumption of water with desirable concentration of ions is good for human health. An assessment of river water quality with special reference to drinking and irrigation purpose was carried.......

Keywords : Kulfo river, spring, water quality index, permissible limit, irrigation quality.

Abstract: Single-well pumping test was carried out at constantrateon six hand pump boreholes inpart of Maiha town to give information about the draw down and a quifer characteristics resulting from specific pumping rate .The test was carried out for eight hoursat constantdischargerate for each of the borehole.The drawdown result with respect to time was analyse using Cooper-Jacob'sstraight-line method in ordertoestimatethe transmissivity and specific discharge of the boreholes. The magnitude of the transmissivity in the study area fall within the low magnitude class, which impliesthat the transmission rateofthegroundwaterin the aquifer is low. The boreholes in the study area are of moderate performance which is capable of serving a smaller population using hand pump based on the result of the specific capacity obtained from the result.....

Keywords : Transmissivity, Specific capacity, Single-well, Pumping test, Aquifer.

Abstract: The magnetotelluric method is a passive geophysical method that utilizes electromagnetic waves and is effectively used in geothermal exploration. However, the measurement data with the MT method often causes distortion due to a mismatch between the expanse of the tool and the direction of the main structure of the study area. The existence of distortion in the measurement data can cause errors in modeling and interpretation. Therefore, this study aims to determine the effect of rotation on magnetotelluric data processing to produce an appropriate model, so that it can find out the "MR" geothermal system. Rotation is carried out on the sounding curve, with an angle of -45o in accordance with the direction of the main structure of the study area. Based on the research that has been done the best model is generated from data that has been rotated because it produces smaller RMS and when compared with geological data has a more suitable model. The results of the interpretation show that the prospect......

Abstract: Now several hotels and tourist villages are being built around the bay. These tourism projects including what is virtually working and others still under construction of Abu-Soma Bay. Granulometric and geochemical analyses have been carried out on 30 surface marine sediment samples collected from Abu-Soma area along the Egyptian Red Sea coast. The textural characteristics of marine sediments show that the mean size decreases in sediments of coastal areas while increase in offshore sediments and the sediment type generally changes from sand to slightly gravelly muddy sand. But, generally, sand fraction is prevalent among the other constituents. The sediments are composed mainly of poorly sorted, negatively nearly symmetrical and leptokurtic fine sands. Cluster analysis showed that, distribution of gravel, sand and mud fractions is related to bottom facies and type of sediment source and depth more than distance of the beach. Geochemically, the factor controlling the carbonate content of studied sediments.......

Abstract: Soils in Dukpa, Gwagwalada area, Crystalline Basement Complex were investigated to establish corrosivity profiles and aquifer protective capacity. Six vertical electrical soundings using Schlumberger electrode array were employed for data acquisition. Iteration and inversion processes of determining resistivities, curve types and thicknesses of the various layers were executed using WINRESIST software. Results show that the area is characterized by 4 to 5 geoelectric subsurface layers. Soils with resistivities between 50.6 and 111.8 Ωm in the upper layers between 8.8 and 11.2m depth respectively at VES 1 were characterized as "slightly to moderately corrosive", while soil with resistivity value of 37.2 Ωm in the clay layer at 8.4m depth at VES 2 is characterized as......

Keywords: Aquifer Protective Capacity, Basement Complex, Gwagwalada Area, Soil Corrosivity, Vertical Electrical Sounding.

Abstract: The study was conducted to map the existence of faults in the study area using the gravity methodmethod. The research data usedissecondary data, The free air anomaly data obtainedfrom the website https://topex.ucsd.edu/cgi-bin/get_data.cgi. To map the fault, the free air anomaly data thencorectedbouguer and terrain correction to obtaincompletebougueranomaly (CBA) data. Complete bougueranomaly data thenanalysis by gradient, and euler de-convolution analysis. Gradient analysisincludes first horizontal gradient and second vertical derivative (SVD). Based on gradient analysis, and euler de-convolution, the results show thatthereisageological structure in the form of normal faultlocated in the southeast of researcharea. CBA data isthenmodeledinverselyusing Oasis Montaj software to getsub surface structure.The results of the 3D modeling obtained a normal fault indication at the UTM coordinates of the 49 S zone at Easting 453000 meters to 457000 meters and Northing around 9140000 m with a depth from about 1000 meters to 3000 meters.

Key Words : gravitymethod, fault, gradient analysis, euler de-convolution, Klaten.

Abstract: The six ancient wells and the geological environment around Jiuli Village of Danyang City in Jiangsu Province have been explored in detail through the application of inorganic and organic chemical analysis, controlled source audio-frequency magnetotellurics, high-density resistivity, radon gas measurements and other geochemical and geophysical methods. The six wells are 30-200 centimeters apart from each other and have been boiling for more than 2000 years. This study finds that: (1) CO2 is the main boiling gas in the "boiling wells", and there are also traces of radon gas and total volatile organic compounds (TVOC), which are not detected in the nearby non-boiling wells. (2) The contents of free carbon dioxide, calcium iron, manganese, total dissolved solids, total hardness, bicarbonate and rare earth elements in water samples from "boiling wells" are significantly higher than those taken from other.......

Key words: ancient well; "boiling wells"; Jiuli village; Maodong fault; Millennium MysterY.