Geological and geophysical studies results on the territory of a constructed poultry farm to determine a place for water well drilling, Iskitim area, Novosibirsk region

2020 ◽  
Author(s):  
Alexey N. Faguet ◽  
◽  
Aydisa M. Sanchaa ◽  
Olga V. Shemelina ◽  
◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Poultry Farm ◽  
Complex Behavior ◽  
Resistivity Tomography ◽  
Well Drilling ◽  
Novosibirsk Region ◽  
Water Wells ◽  
Water Well ◽  
Geophysical Study

In this article we present the results of electrical resistivity tomography (ERT) study on the grounds of a constructed duck farm in the Iskitim area of Novosibirsk Region. The area is characterized by complex behavior of the aquifer, – yields from water–wells vary up to six times (from 1.5 to 9 m3 /hour). Considering the importance of the constructed object and demand for steady water supply, after the first ill experience of “blind drilling”, a geophysical study was made to determine optimal places for water wells.

scholarly journals Geophysical study on moraine dam of Imja Glacial Lake in Eastern Nepal using Electrical Resistivity Tomography Method

2018 ◽  
Vol 55 (1) ◽  
pp. 15-22
Author(s):  
Pushpa Raj Dahal ◽  
Kabi Raj Paudyal ◽  
Sudhir Rajaure
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Maximum Depth ◽  
Glacial Lake ◽  
Resistivity Tomography ◽  
Electrical Resistivity Survey ◽  
Geophysical Study ◽  
Glacier Ice ◽  
Tomography Method ◽  
Seepage Channel

Glacial Lake Outburst Flood (GLOF) is one of the potential disaster of Nepal. The Imja glacial lake is considered as one of the fastest growing glacial lake with high risk of GLOF. The internal structure of moraine dams, especially the distribution of buried ice blocks and permafrost materials is key factors in assessing GLOF risk. This study covers exploration and assessment of subsurface conditions of the moraine material such as quantification of buried ice, seepage channel and permafrost material distribution. The geophysical study of dam was carried out by using Dipole–dipole array of Electrical Resistivity Tomography (ERT) method. This study presents the results regarding use of electrical resistivity survey for assessment of the subsurface buried glacier ice and permafrost zones within the dam of the Imja glacial lake. The interpretation of resistivity data at end moraine of Imja glacial lake is based not only on specific resistivity values, but also with field observations and correlation with previous studies. The maximum depth of information obtained from the modeling is about 25 m and; highest and lowest values of resistivity ranges from 117 Wm to 2682240 Wm. The distribution of major subsurface materials from lowest resistivity value to highest resistivity values are classified as saturated moraine (<5000 Wm), frozen moraine (5000 Wm to 20000 Wm) and dead ice (>20000 Wm). The distribution of dead buried ice in moraine dam is found to be heterogeneous. The minimum and maximum depth of dead ice from surface is about 0 m to 20 m at various locations. Based on the information of this study, an open channel was cut through the lake to lower its level and the result is found to be successful. 

scholarly journals Electrical Resistivity Tomography And Induced Polarization Study For Groundwater Exploration In The Agricultural Development Areas of Brunei Darussalam

2021 ◽  
Author(s):  
Lieyana Azffri ◽  
Stefan Herwig Gödeke ◽  
Mohammad Faizan Ibrahim
Keyword(s):  
Electrical Resistivity ◽  
Agricultural Development ◽  
Electrical Resistivity Tomography ◽  
Groundwater Exploration ◽  
Induced Polarization ◽  
Resistivity Tomography ◽  
Well Drilling ◽  
Brunei Darussalam ◽  
Groundwater Yield ◽  
2D Resistivity

Abstract Electrical Resistivity Tomography (ERT) and Induced Polarization (IP) study was carried out for groundwater exploration at eight agricultural development areas in Brunei Darussalam. The study was undertaken to meet the growing demands of water supply in the Brunei agricultural sector, particularly for paddy field irrigation. A total of nineteen survey lines with survey lengths of up to 800 m and investigation depths of up to 150 m below ground level were conducted to delineate subsurface geological structures, formations and aquifer zones in the study area. Aquifer zones with resistivity values ranging from 1 to 100 ohm-m and chargeability values of less than 1 mV/V were detected in all surveyed locations. New groundwater well drilling was conducted at two of the surveyed sites based on interpretations of 2D resistivity and chargeability inversion models. Water well drilling encountered aquifer zones, which were primarily in sandy layers. Hydraulic tests revealed groundwater yields of 4.3 and 288 m³/day. Estimated transmissivity values of the aquifer units based on pumping tests are 0.53 and 109 m²/day, while their hydraulic conductivity values are 0.05 and 2.75 m/day. Estimated parameters of the aquifer units indicate weak to moderate groundwater yield for withdrawal and distribution for irrigation purposes at the investigated sites. The present study helped decision-makers take suitable measures for placing future irrigation wells and achieve significant groundwater exploration results in the study area.

scholarly journals Geophysical study of land subsidence: example from Pokhara basin

2006 ◽  
Vol 34 ◽  
pp. 135-140
Author(s):  
M. Yoshida ◽  
S. R. Pant ◽  
P. C. Adhikary ◽  
V. Dangol ◽  
S. Shrestha
Keyword(s):  
Electrical Resistivity ◽  
Debris Flow ◽  
Land Subsidence ◽  
Ground Penetrating Radar ◽  
Electrical Resistivity Tomography ◽  
Control Measures ◽  
Resistivity Tomography ◽  
Geophysical Study ◽  
Ground Penetrating

Land subsidence is a serious problem in the Pokhara city and surrounding wide areas consisting of recent debris flow deposits. Owing to their calcareous matrix the debris flow deposits are more-or-less well cemented, even though their age ranges just from 12,000 to 700 years BP. There are numerous caves and caverns in these deposits. To investigate the danger of subsidence, ground penetrating radar and electrical resistivity tomography were employed to detect and map the caves and caverns. The results are quite encouraging and the above methods are found to be quite effective in formulating the control measures to the land subsidence hazard.

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