The geophysical techniques inside a drilled hole include: 1. Electric Logging 2. Radioactive Logging 3. Induction Logging 4. Sonic Logging 5. Fluid Logging 6. Down-Hole Photography. Technique # 1. Electric Logging: A four electrode arrangement is commonly employed in measuring resistivity from bore holes similar to the four electrodes used in surface resistivity method. A […]
Geophysical Techniques inside a Borehole | Geography
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Ground Water Recharge and Its Methods | Geography
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In this article we will discuss about ground water recharge and its methods. Recharge of Ground Water: With the increasing use of ground water for agricultural, municipal and industrial needs, the annual extractions of ground water are far in excess of net average recharge from natural sources. Consequently, ground water is being withdrawn from storage […]
Groundwater Exploration: Investigation and Surveys | Geology
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The demand of groundwater for drinking water and other requirements of the man are expected to increase tremendously with rise in population. Hence, the engineer has to equip himself with latest technologies available for exploration and exploitation of this resource. And, as in other fields, good progress has been made for quicker and more reliable […]